| Message ID | 20220202165315.18282-1-nick.hawkins@hpe.com |
|---|---|
| State | New |
| Headers | show |
| Series | HPE BMC GXP SUPPORT | expand |
On Wed, Feb 02, 2022 at 10:52:50AM -0600, nick.hawkins@hpe.com wrote: > From: Nick Hawkins <nick.hawkins@hpe.com> > > GXP is the name of the HPE SoC. > This SoC is used to implement BMC features of HPE servers > (all ProLiant, Synergy, and many Apollo, and Superdome machines) > It does support many features including: > ARMv7 architecture, and it is based on a Cortex A9 core > Use an AXI bus to which > a memory controller is attached, as well as > multiple SPI interfaces to connect boot flash, > and ROM flash, a 10/100/1000 Mac engine which > supports SGMII (2 ports) and RMII > Multiple I2C engines to drive connectivity with a host infrastructure > A video engine which support VGA and DP, as well as > an hardware video encoder > Multiple PCIe ports > A PECI interface, and LPC eSPI > Multiple UART for debug purpose, and Virtual UART for host connectivity > A GPIO engine > This Patch Includes: > Documentation for device tree bindings > Device Tree Bindings > GXP Timer Support > GXP Architecture Support This is far too big for a single patch. It needs to be broken into functional chunks that can be reviewed individually. Each driver and each device tree change along with it's accompanying code need to be done in individual patches. The way it is it can't be reviewed in any sane manner. -corey > > Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com> > --- > .../bindings/display/hpe,gxp-thumbnail.txt | 21 + > .../devicetree/bindings/gpio/hpe,gxp-gpio.txt | 16 + > .../devicetree/bindings/i2c/hpe,gxp-i2c.txt | 19 + > .../bindings/ipmi/hpegxp-kcs-bmc-cfg.txt | 13 + > .../bindings/ipmi/hpegxp-kcs-bmc.txt | 21 + > .../memory-controllers/hpe,gxp-srom.txt | 13 + > .../devicetree/bindings/mtd/hpe,gxp.txt | 16 + > .../bindings/net/hpe,gxp-umac-mdio.txt | 21 + > .../devicetree/bindings/net/hpe,gxp-umac.txt | 20 + > .../devicetree/bindings/pwm/hpe,gxp-fan.txt | 15 + > .../bindings/serial/hpe,gxp-vuart-cfg.txt | 17 + > .../bindings/serial/hpe,gxp-vuart.txt | 23 + > .../bindings/soc/hpe/hpe,gxp-chif.txt | 16 + > .../bindings/soc/hpe/hpe,gxp-csm.txt | 14 + > .../bindings/soc/hpe/hpe,gxp-dbg.txt | 18 + > .../bindings/soc/hpe/hpe,gxp-fn2.txt | 20 + > .../bindings/soc/hpe/hpe,gxp-xreg.txt | 19 + > .../devicetree/bindings/spi/hpe,gxp-spifi.txt | 76 +++ > .../bindings/thermal/hpe,gxp-coretemp.txt | 14 + > .../bindings/timer/hpe,gxp-timer.txt | 18 + > .../devicetree/bindings/usb/hpe,gxp-udc.txt | 21 + > .../devicetree/bindings/vendor-prefixes.yaml | 4 +- > .../bindings/watchdog/hpe,gxp-wdt.txt | 11 + > MAINTAINERS | 14 + > arch/arm/Kconfig | 2 + > arch/arm/boot/dts/Makefile | 2 + > arch/arm/boot/dts/hpe-bmc-dl360gen10.dts | 207 +++++++ > arch/arm/boot/dts/hpe-gxp.dtsi | 555 ++++++++++++++++++ > arch/arm/configs/gxp_defconfig | 243 ++++++++ > arch/arm/mach-hpe/Kconfig | 21 + > arch/arm/mach-hpe/Makefile | 1 + > arch/arm/mach-hpe/gxp.c | 62 ++ > drivers/clocksource/Kconfig | 8 + > drivers/clocksource/Makefile | 1 + > drivers/clocksource/gxp_timer.c | 158 +++++ > 35 files changed, 1719 insertions(+), 1 deletion(-) > create mode 100644 Documentation/devicetree/bindings/display/hpe,gxp-thumbnail.txt > create mode 100644 Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.txt > create mode 100644 Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.txt > create mode 100644 Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc-cfg.txt > create mode 100644 Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc.txt > create mode 100644 Documentation/devicetree/bindings/memory-controllers/hpe,gxp-srom.txt > create mode 100644 Documentation/devicetree/bindings/mtd/hpe,gxp.txt > create mode 100644 Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.txt > create mode 100644 Documentation/devicetree/bindings/net/hpe,gxp-umac.txt > create mode 100644 Documentation/devicetree/bindings/pwm/hpe,gxp-fan.txt > create mode 100644 Documentation/devicetree/bindings/serial/hpe,gxp-vuart-cfg.txt > create mode 100644 Documentation/devicetree/bindings/serial/hpe,gxp-vuart.txt > create mode 100644 Documentation/devicetree/bindings/soc/hpe/hpe,gxp-chif.txt > create mode 100644 Documentation/devicetree/bindings/soc/hpe/hpe,gxp-csm.txt > create mode 100644 Documentation/devicetree/bindings/soc/hpe/hpe,gxp-dbg.txt > create mode 100644 Documentation/devicetree/bindings/soc/hpe/hpe,gxp-fn2.txt > create mode 100644 Documentation/devicetree/bindings/soc/hpe/hpe,gxp-xreg.txt > create mode 100644 Documentation/devicetree/bindings/spi/hpe,gxp-spifi.txt > create mode 100644 Documentation/devicetree/bindings/thermal/hpe,gxp-coretemp.txt > create mode 100644 Documentation/devicetree/bindings/timer/hpe,gxp-timer.txt > create mode 100644 Documentation/devicetree/bindings/usb/hpe,gxp-udc.txt > create mode 100644 Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.txt > create mode 100644 arch/arm/boot/dts/hpe-bmc-dl360gen10.dts > create mode 100644 arch/arm/boot/dts/hpe-gxp.dtsi > create mode 100644 arch/arm/configs/gxp_defconfig > create mode 100644 arch/arm/mach-hpe/Kconfig > create mode 100644 arch/arm/mach-hpe/Makefile > create mode 100644 arch/arm/mach-hpe/gxp.c > create mode 100644 drivers/clocksource/gxp_timer.c > > diff --git a/Documentation/devicetree/bindings/display/hpe,gxp-thumbnail.txt b/Documentation/devicetree/bindings/display/hpe,gxp-thumbnail.txt > new file mode 100644 > index 000000000000..e6d37ecce72b > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/hpe,gxp-thumbnail.txt > @@ -0,0 +1,21 @@ > +* GXP HPE VIDEO THUMBNAIL DRIVER > + > +Required properties: > +- compatible: Must be "hpe,gxp-thumbnail". > +- reg : Physical base address and length of the controller's registers. > +- clocks : phandle + clock specifier pair of the FB reference clock. > +- bits-per-pixel: Bits per pixel, must be 32. > +- width: Width in pixels, must be 800. > +- height: Height in pixels, must be 600. > + > +Optional properties: > +- lcd-supply: Regulator for LCD supply voltage. > + > +Example: > + thumbnail: thumbnail@c0000500 { > + compatible = "hpe,gxp-thumbnail"; > + reg = <0xc0000500 0x20>; > + bits-per-pixel = <32>; > + width = <800>; > + height = <600>; > + }; > diff --git a/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.txt b/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.txt > new file mode 100644 > index 000000000000..568d26d785d2 > --- /dev/null > +++ b/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.txt > @@ -0,0 +1,16 @@ > +*HPE GXP GPIO INTERFACE > + > +Required properties: > +- compatible: Must be "hpe,gxp-gpio". > +- #gpio-cells: The number of cells to describe a GPIO, this should be 2. > +- csm: Phandle to the GXP PCI CSM Controller. > +- vuch0_handle: Phandle to the Virtual USB Hub Controller (VUHC). > + > +Example of gpio-controller nodes for a MPC8347 SoC: > + > + gpio: gpio { > + compatible = "hpe,gxp-gpio"; > + #gpio-cells = <2>; > + csm_handle = <&csm>; > + vuhc0_handle = <&vuhc0>; > + }; > diff --git a/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.txt b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.txt > new file mode 100644 > index 000000000000..cdca203f8c3b > --- /dev/null > +++ b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.txt > @@ -0,0 +1,19 @@ > +* HPE GXP I2C Interface > + > +Required Properties: > + > + - compatible: Must be "hpe,gxp-i2c" > + - reg: The I2C address of the device. > + - interrupts: The interrupt number. > + - interrupt-parent: Interrupt controller to which the I2C bus is reporting > + - i2cg-handle: I2C Global interrupt status register handler > + > +Example: > + > + i2c0: i2c@c0002000 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002000 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + }; > diff --git a/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc-cfg.txt b/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc-cfg.txt > new file mode 100644 > index 000000000000..20deef7a6be2 > --- /dev/null > +++ b/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc-cfg.txt > @@ -0,0 +1,13 @@ > +* HPE GXP KCS IPMI DRIVER > + > +Required properties: > +- compatible : Must contain "hpe,gxp-kcs-bmc-cfg", "simple-mfd", "syscon". > +- reg : Specifies base physical address and size of the configuration registers. > + > +Example: > + > + kcs_conf: kcs_conf@80fc0430 { > + compatible = "hpe,gxp-kcs-bmc-cfg", "simple-mfd", "syscon"; > + reg = <0x80fc0430 0x100>; > + }; > + > diff --git a/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc.txt b/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc.txt > new file mode 100644 > index 000000000000..137411243f3f > --- /dev/null > +++ b/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc.txt > @@ -0,0 +1,21 @@ > +* HPE GXP KCS IPMI DRIVER > + > +Required properties: > +- compatible : Must contain "hpe,gxp-kcs-bmc". > +- interrupts : The interrupt number. > +- reg : Specifies base physical address and size of the control registers. > +- kcs_chan : The KCS channel number in the controller. > +- status: The status signal from the controller. > +- kcs-bmc-cfg = Phandle to the KCS Configuration registers. > + > +Example: > + > + kcs_reg: kcs_reg@80fd0400 { > + compatible = "hpe,gxp-kcs-bmc"; > + reg = <0x80fd0400 0x8>; > + interrupts = <6>; > + interrupt-parent = <&vic1>; > + kcs_chan = <1>; > + status = "okay"; > + kcs-bmc-cfg = <&kcs_conf>; > + }; > diff --git a/Documentation/devicetree/bindings/memory-controllers/hpe,gxp-srom.txt b/Documentation/devicetree/bindings/memory-controllers/hpe,gxp-srom.txt > new file mode 100644 > index 000000000000..027cb6fbc93c > --- /dev/null > +++ b/Documentation/devicetree/bindings/memory-controllers/hpe,gxp-srom.txt > @@ -0,0 +1,13 @@ > +* HPE GXP SROM CONTROLLER > + > +Required properties: > + > +- compatible: Must be one of "hpe,gxp-srom", "simple-mfd", "syscon". > +- reg: Specifies base physical address and size of the control registers. > + > +Example: > + > + srom@80fc0000 { > + compatible = "hpe,gxp-srom", "simple-mfd", "syscon"; > + reg = <0x80fc0000 0x100>; > + }; > diff --git a/Documentation/devicetree/bindings/mtd/hpe,gxp.txt b/Documentation/devicetree/bindings/mtd/hpe,gxp.txt > new file mode 100644 > index 000000000000..8c6f54af0260 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mtd/hpe,gxp.txt > @@ -0,0 +1,16 @@ > + > +* HPE GXP BMC > + > +HPE GXP SoC definition > + > +Required properties: > + - compatible : Must contain: "HPE,GXP" > + > +Example: > +/ { > + model = "Hewlett Packard Enterprise GXP BMC"; > + compatible = "HPE,GXP"; > + #address-cells = <1>; > + #size-cells = <1>; > + > +} > diff --git a/Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.txt b/Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.txt > new file mode 100644 > index 000000000000..fa48ecb22c92 > --- /dev/null > +++ b/Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.txt > @@ -0,0 +1,21 @@ > +* HPE GXP UMAC MDIO Interface Controller > + > +Required properties: > +- compatible: Must contain "hpe,gxp-umac-mdio". > +- reg: Specifies base physical address and size of the registers. > +- interrupts: The interrupt number. > +- Cells which are configuring the external phy interfaces. Numbered through relative addressing each phy is compatible with a standard ethernet-phy-ieee802.3 phy. > + > +Example: > + > + mdio0: mdio@c0004080 { > + compatible = "hpe,gxp-umac-mdio"; > + reg = <0xc0004080 0x10>; > + #address-cells = <1>; > + #size-cells = <0>; > + ext_phy0: ethernt-phy@0 { > + compatible = "ethernet-phy-ieee802.3-c22"; > + phy-mode = "sgmii"; > + reg = <0>; > + }; > + }; > diff --git a/Documentation/devicetree/bindings/net/hpe,gxp-umac.txt b/Documentation/devicetree/bindings/net/hpe,gxp-umac.txt > new file mode 100644 > index 000000000000..3a620b4ad999 > --- /dev/null > +++ b/Documentation/devicetree/bindings/net/hpe,gxp-umac.txt > @@ -0,0 +1,20 @@ > +* HPE GXP UMAC Controller > + > +Required properties: > +- compatible: Must contain "hpe,gxp-umac". > +- reg: Specifies base physical address and size of the registers. > +- interrupts: The interrupt number. > +- interrupt-parent: specify main interrupt controller handler > +- phy-handle: Phandle to a PHY on the MDIO bus. > +- int-phy-handle: Phandle to PHY interrupt handler. > + > +Example: > + > + umac0: umac@c0004000 { > + compatible = "hpe,gxp-umac"; > + reg = <0xc0004000 0x80>; > + interrupts = <10>; > + interrupt-parent = <&vic0>; > + phy-handle = <&ext_phy0>; > + int-phy-handle = <&int_phy0>; > + }; > diff --git a/Documentation/devicetree/bindings/pwm/hpe,gxp-fan.txt b/Documentation/devicetree/bindings/pwm/hpe,gxp-fan.txt > new file mode 100644 > index 000000000000..21446b7cafd9 > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/hpe,gxp-fan.txt > @@ -0,0 +1,15 @@ > +* HPE GXP Fan Controller > + > +Required properties: > +- compatible: Must contain "hpe,gxp-fan-ctrl". > +- reg: Physical base address and length of the controller's registers. > +- xreg_handle: Phandle to the xregister controller for fan control. > +- fn2_handle: Phandle to the FN2 interface. > + > +Example: > + fanctrl: fanctrl@c1000c00 { > + compatible = "hpe,gxp-fan-ctrl"; > + reg = <0xc1000c00 0x200>; > + xreg_handle = <&xreg>; > + fn2_handle = <&fn2>; > + }; > diff --git a/Documentation/devicetree/bindings/serial/hpe,gxp-vuart-cfg.txt b/Documentation/devicetree/bindings/serial/hpe,gxp-vuart-cfg.txt > new file mode 100644 > index 000000000000..8bad8c39d044 > --- /dev/null > +++ b/Documentation/devicetree/bindings/serial/hpe,gxp-vuart-cfg.txt > @@ -0,0 +1,17 @@ > +*HPE Virtual UART Controller CONFIGURATION > + > +This controller is used to forward host serial to BMC chip > + > +Required properties: > + > +- compatible : Must contain "hpe,gxp-vuarta_cfg", "simple-mfd", "syscon". > +- reg : Specifies base physical address and size of the configuration register. > +- reg-io-width: io register width in bytes, must be 1. > + > +Example: > + > + vuart_a_cfg: vuarta_cfg@80fc0230 { > + compatible = "hpe,gxp-vuarta_cfg", "simple-mfd", "syscon"; > + reg = <0x80fc0230 0x100>; > + reg-io-width = <1>; > + }; > diff --git a/Documentation/devicetree/bindings/serial/hpe,gxp-vuart.txt b/Documentation/devicetree/bindings/serial/hpe,gxp-vuart.txt > new file mode 100644 > index 000000000000..9c5cc14d9474 > --- /dev/null > +++ b/Documentation/devicetree/bindings/serial/hpe,gxp-vuart.txt > @@ -0,0 +1,23 @@ > +*HPE VUART Controller port > + > +Required properties: > + > +- compatible : Must contain "hpe,gxp-vuart". > +- reg : Specifies base physical address and size of the registers. > +- interrupts : The interrupt number. > +- clock-frequency: The frequency of the clock input to the UART in Hz. > +- status: The status signal from the controller. > + > +Example: > + > + vuart_a: vuart_a@80fd0200 { > + compatible = "hpe,gxp-vuart"; > + reg = <0x80fd0200 0x100>; > + interrupts = <2>; > + interrupt-parent = <&vic1>; > + clock-frequency = <1846153>; > + reg-shift = <0>; > + status = "okay"; > + serial-line = <3>; > + vuart_cfg = <&vuart_a_cfg>; > + }; > diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-chif.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-chif.txt > new file mode 100644 > index 000000000000..9d5a8763ca22 > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-chif.txt > @@ -0,0 +1,16 @@ > +* HPE GXP CHIF INTERFACE > + > +Define the basic CHannel InterFace (CHIF) communication path between BMC and Host through PCI. > +Interrupts are handled through PCI function 2 > + > +Required parent device properties: > +- compatible : Should be "hpe,gxp-chif". > +- interrupts : The interrupt number. > + > +Example: > + > + chif { > + compatible = "hpe,gxp-chif"; > + interrupts = <12>; > + }; > + }; > diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-csm.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-csm.txt > new file mode 100644 > index 000000000000..8d28fd1ec46a > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-csm.txt > @@ -0,0 +1,14 @@ > +* HPE GXP PCI CSM INTERFACE > + > +Required parent device properties: > +- compatible : Should be "hpe,gxp-csm", "simple-mfd", "syscon". > +- reg : Specifies base physical address and size of control registers. > + > +Example: > + > + csm: csm@8000005c { > + compatible = "hpe,gxp-csm", "simple-mfd", "syscon"; > + reg = <0x8000005c 0x2>, <0x800000de 0x1>, <0x800000e7 0x1>; > + }; > + > + > diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-dbg.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-dbg.txt > new file mode 100644 > index 000000000000..39e3ed68a34d > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-dbg.txt > @@ -0,0 +1,18 @@ > +* HPE GXP DBG INTERFACE > + > +Specify host debug interface. Used presently to report ROM POST code during host initialization phases > + > +Required parent device properties: > +- compatible : Should be "hpe,gxp-dbg". > +- reg : Specifies base physical address and size of the control/data registers. > +- interrupts: The interrupt number. > +- interrupt-parent: The interrupt controller to which the interface is wired to > + > +Example: > + > + post@800000a0 { > + compatible = "hpe,gxp-dbg"; > + reg = <0x800000a0 0x20>; > + interrupts = <10>; > + interrupt-parent = <&vic1>; > + }; > diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-fn2.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-fn2.txt > new file mode 100644 > index 000000000000..eb8328f59eda > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-fn2.txt > @@ -0,0 +1,20 @@ > +* HPE GXP PCI FN2 INTERFACE CONTROLLER > + > +Required parent device properties: > +- compatible : Should be "hpe,gxp-fn2", "simple-mfd", "syscon". > +- reg : Specifies base physical address and size of the control/data/memory mapped registers. > +- xreg_handle : Phandle to the xregister controller interface. > +- #gpio-cells : The number of cells to describe a GPIO, this should be 2. > +- interrupts : interrupt number to which PCI FN2 is connected to > +- interrupt-parets : interrupt controller to which PCI FN2 is connected to > + > +Example: > + > + fn2: fn2@80200000 { > + compatible = "hpe,gxp-fn2", "simple-mfd", "syscon"; > + reg = <0x80200000 0x100000>; > + xreg_handle = <&xreg>; > + interrupts = <0>; > + interrupt-parent = <&vic1>; > + #gpio-cells = <2>; > + }; > diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-xreg.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-xreg.txt > new file mode 100644 > index 000000000000..3ec86a478302 > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-xreg.txt > @@ -0,0 +1,19 @@ > +* HPE GXP XREG INTERFACE > + > +Required parent device properties: > +- compatible : Should be "hpe,gxp-fn2", "simple-mfd", "syscon". > +- reg : Specifies base physical address and size of the control registers. > +- interrupts: The interrupt number. > +- interrupt-parent: main interrupt controller to which xreg is connected to > +- #gpio-cells : The number of cells to describe a GPIO, this should be 2. > + > +Example: > + > + xreg: xreg@d1000300 { > + compatible = "hpe,gxp-xreg", "simple-mfd", "syscon"; > + reg = <0xd1000300 0xFF>; > + interrupts = <26>; > + interrupt-parent = <&vic0>; > + #gpio-cells = <2>; > + }; > + > diff --git a/Documentation/devicetree/bindings/spi/hpe,gxp-spifi.txt b/Documentation/devicetree/bindings/spi/hpe,gxp-spifi.txt > new file mode 100644 > index 000000000000..78eac0ac82f4 > --- /dev/null > +++ b/Documentation/devicetree/bindings/spi/hpe,gxp-spifi.txt > @@ -0,0 +1,76 @@ > +* HPE GXP SPI FLASH INTERFACE > + > +Required properties: > + - compatible : Must contain: "hpe,gxp-spifi" > + - reg : the first contains the control register location and length, > + the second contains the memory window mapping address and length, > + the third contains the configuration register location and length > + - interrupts: The interrupt number. > + - #address-cells : must be 1 corresponding to chip select child binding > + - #size-cells : must be 0 corresponding to chip select child binding > + > +The child nodes are the SPI flash modules which must have a compatible > +property as specified in bindings/mtd/jedec,spi-nor.txt > + > +Example: > + spifi0: spifi@c0000200 { > + compatible = "hpe,gxp-spifi"; > + reg = <0xc0000200 0x80>, <0xc000c000 0x100>, <0xf8000000 0x8000000>; > + interrupts = <20>; > + interrupt-parent = <&vic0>; > + #address-cells = <1>; > + #size-cells = <0>; > + > + flash@0 { > + compatible = "jedec,spi-nor"; > + reg = <0>; > + partitions { > + compatible = "fixed-partitions"; > + #address-cells = <1>; > + #size-cells = <1>; > + > + u-boot@0 { > + label = "u-boot"; > + reg = <0x0 0x60000>; > + }; > + u-boot-env@60000 { > + label = "u-boot-env"; > + reg = <0x60000 0x20000>; > + }; > + kernel@80000 { > + label = "kernel"; > + reg = <0x80000 0x4c0000>; > + }; > + rofs@540000 { > + label = "rofs"; > + reg = <0x540000 0x1740000>; > + }; > + rwfs@1c80000 { > + label = "rwfs"; > + reg = <0x1c80000 0x250000>; > + }; > + section@1edf000{ > + label = "section"; > + reg = <0x1ed0000 0x130000>; > + }; > + }; > + }; > + > + flash@1 { > + compatible = "jedec,spi-nor"; > + reg = <1>; > + partitions { > + compatible = "fixed-partitions"; > + #address-cells = <1>; > + #size-cells = <1>; > + host-prime@0 { > + label = "host-prime"; > + reg = <0x0 0x02000000>; > + }; > + host-second@2000000 { > + label = "host-second"; > + reg = <0x02000000 0x02000000>; > + }; > + }; > + }; > + }; > diff --git a/Documentation/devicetree/bindings/thermal/hpe,gxp-coretemp.txt b/Documentation/devicetree/bindings/thermal/hpe,gxp-coretemp.txt > new file mode 100644 > index 000000000000..bc83db03166a > --- /dev/null > +++ b/Documentation/devicetree/bindings/thermal/hpe,gxp-coretemp.txt > @@ -0,0 +1,14 @@ > +* HPE GXP CORETEMP INTERFACE > + > +Required parent device properties: > +- compatible : Should be "hpe,gxp-coretemp". > +- reg : Specifies base physical address and size of the control register. > + > +Example: > + > + coretemp: coretemp@c0000130 { > + compatible = "hpe,gxp-coretemp"; > + reg = <0xc0000130 0x8>; > + }; > + > + > diff --git a/Documentation/devicetree/bindings/timer/hpe,gxp-timer.txt b/Documentation/devicetree/bindings/timer/hpe,gxp-timer.txt > new file mode 100644 > index 000000000000..3e491b8ea740 > --- /dev/null > +++ b/Documentation/devicetree/bindings/timer/hpe,gxp-timer.txt > @@ -0,0 +1,18 @@ > +*HPE GXP TIMER > + > +Required properties: > + > +- compatible : Must be "hpe,gxp-timer" > +- reg : The GXP Timer Control Registers (Addresses + size) tuples list. > +- interrupts : The interrupt number. > +- clock-frequency : The frequency of the clock that drives the counter, in Hz. > + > +Example: > + > + timer0: timer@c0000080 { > + compatible = "hpe,gxp-timer"; > + reg = <0xc0000080 0x1>, <0xc0000094 0x01>, <0xc0000088 0x08>; > + interrupts = <0>; > + interrupt-parent = <&vic0>; > + clock-frequency = <400000000>; > + }; > diff --git a/Documentation/devicetree/bindings/usb/hpe,gxp-udc.txt b/Documentation/devicetree/bindings/usb/hpe,gxp-udc.txt > new file mode 100644 > index 000000000000..ed764d64a169 > --- /dev/null > +++ b/Documentation/devicetree/bindings/usb/hpe,gxp-udc.txt > @@ -0,0 +1,21 @@ > +* HPE USB Device Port Controller > + > +Required properties: > +- compatible: Must be "hpe,gxp-udc". > +- reg: Specifies base physical address and size of the registers. > +- interrupts: The interrupt number. > +- vdevnum: The particular usb device controller port. > +- fepnum: The particular usb device controller options. > +- udcg-handle: The usb device controller hub. > + > +Example: > + > + udc0: udc@80401000 { > + compatible = "hpe,gxp-udc"; > + reg = <0x80401000 0x1000>; > + interrupts = <13>; > + interrupt-parent = <&vic1>; > + vdevnum = <0>; > + fepnum = <7>; > + udcg-handle = <&udcg>; > + }; > diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml > index 294093d45a23..913f722a6b8d 100644 > --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml > +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml > @@ -514,7 +514,9 @@ patternProperties: > "^hoperun,.*": > description: Jiangsu HopeRun Software Co., Ltd. > "^hp,.*": > - description: Hewlett Packard > + description: Hewlett Packard Inc. > + "^hpe,.*": > + description: Hewlett Packard Enterprise > "^hsg,.*": > description: HannStar Display Co. > "^holtek,.*": > diff --git a/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.txt b/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.txt > new file mode 100644 > index 000000000000..3f17c1a00a5c > --- /dev/null > +++ b/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.txt > @@ -0,0 +1,11 @@ > +* HPE GXP Controlled Watchdog > + > +Required Properties: > +- compatible: Should contain "hpe,gxp-wdt". > +- reg: The GXP Watchdog Control Registers (Addresses + size) tuples list. > + > +Example: > + watchdog: watchdog@c0000090 { > + compatible = "hpe,gxp-wdt"; > + reg = <0xc0000090 0x02>, <0xc0000096 0x01>; > + }; > diff --git a/MAINTAINERS b/MAINTAINERS > index f41088418aae..2a4fcfff0104 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -8385,6 +8385,20 @@ L: linux-efi@vger.kernel.org > S: Maintained > F: block/partitions/efi.* > > +GXP ARCHITECTURE > +M: Jean-Marie Verdun <verdun@hpe.com> > +M: Nick Hawkins <nick.hawkins@hpe.com> > +S: Maintained > +F: arch/arm/boot/dts/gxp.dts > +F: arch/arm/configs/gxp_defconfig > +F: arch/arm/mach-hpe/gxp.c > + > +GXP TIMER > +M: Jean-Marie Verdun <verdun@hpe.com> > +M: Nick Hawkins <nick.hawkins@hpe.com> > +S: Maintained > +F: drivers/clocksource/gxp_timer.c > + > H8/300 ARCHITECTURE > M: Yoshinori Sato <ysato@users.sourceforge.jp> > L: uclinux-h8-devel@lists.sourceforge.jp (moderated for non-subscribers) > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index 4c97cb40eebb..6998b5b5f59e 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -618,6 +618,8 @@ source "arch/arm/mach-highbank/Kconfig" > > source "arch/arm/mach-hisi/Kconfig" > > +source "arch/arm/mach-hpe/Kconfig" > + > source "arch/arm/mach-imx/Kconfig" > > source "arch/arm/mach-integrator/Kconfig" > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile > index 235ad559acb2..a96b4d5b7f68 100644 > --- a/arch/arm/boot/dts/Makefile > +++ b/arch/arm/boot/dts/Makefile > @@ -1549,3 +1549,5 @@ dtb-$(CONFIG_ARCH_ASPEED) += \ > aspeed-bmc-vegman-n110.dtb \ > aspeed-bmc-vegman-rx20.dtb \ > aspeed-bmc-vegman-sx20.dtb > +dtb-$(CONFIG_ARCH_HPE_GXP) += \ > + hpe-bmc-dl360gen10.dtb > diff --git a/arch/arm/boot/dts/hpe-bmc-dl360gen10.dts b/arch/arm/boot/dts/hpe-bmc-dl360gen10.dts > new file mode 100644 > index 000000000000..278bf2bca2c8 > --- /dev/null > +++ b/arch/arm/boot/dts/hpe-bmc-dl360gen10.dts > @@ -0,0 +1,207 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Device Tree file for HPE DL360Gen10 > + */ > + > +/include/ "hpe-gxp.dtsi" > + > +/ { > + #address-cells = <1>; > + #size-cells = <1>; > + compatible = "hpe,gxp"; > + model = "Hewlett Packard Enterprise ProLiant dl360 Gen10"; > + > + chosen { > + bootargs = "earlyprintk console=ttyS0,115200 user_debug=31"; > + }; > + > + aliases { > + ethernet0 = &umac0; > + ethernet1 = &umac1; > + }; > + > + memory@40000000 { > + device_type = "memory"; > + reg = <0x40000000 0x20000000>; > + }; > + > + ahb { > + umac0: umac@c0004000 { > + mac-address = [94 18 82 16 04 d8]; > + }; > + > + umac1: umac@c0005000 { > + mac-address = [94 18 82 16 04 d9]; > + }; > + > + udc0: udc@80401000 { > + compatible = "hpe,gxp-udc"; > + reg = <0x80401000 0x1000>; > + interrupts = <13>; > + interrupt-parent = <&vic1>; > + vdevnum = <0>; > + fepnum = <7>; > + udcg-handle = <&udcg>; > + }; > + > + udc1: udc@80402000 { > + compatible = "hpe,gxp-udc"; > + reg = <0x80402000 0x1000>; > + interrupts = <13>; > + interrupt-parent = <&vic1>; > + vdevnum = <1>; > + fepnum = <7>; > + udcg-handle = <&udcg>; > + }; > + > + udc2: udc@80403000 { > + compatible = "hpe,gxp-udc"; > + reg = <0x80403000 0x1000>; > + interrupts = <13>; > + interrupt-parent = <&vic1>; > + vdevnum = <2>; > + fepnum = <4>; > + udcg-handle = <&udcg>; > + }; > + > + fn2: fn2@80200000 { > + gpio-line-names = > + "POWER_OUT", "PS_PWROK", "PCIERST", "POST_COMPLETE", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", ""; > + }; > + > + xreg: xreg@d1000300 { > + gpio-line-names = > + "", "", "", "", "", "", "POWER", "HEARTBEAT", "FAN1_INST", > + "FAN2_INST","FAN3_INST", "FAN4_INST", "FAN5_INST", > + "FAN6_INST", "FAN7_INST", "FAN8_INST", "FAN9_INST", > + "FAN10_INST", "FAN11_INST", "FAN12_INST","FAN13_INST", > + "FAN14_INST", "FAN15_INST", "FAN16_INST", "FAN1_FAIL", > + "FAN2_FAIL", "FAN3_FAIL", "FAN4_FAIL", "FAN5_FAIL", > + "FAN6_FAIL", "FAN7_FAIL", "FAN8_FAIL", "FAN9_FAIL", > + "FAN10_FAIL", "FAN11_FAIL", "FAN12_FAIL", "FAN13_FAIL", > + "FAN14_FAIL", "FAN15_FAIL", "FAN16_FAIL","", "", "", "", > + "", "", "", "", "", "", "", "", "", "", "", "", "IDENTIFY", > + "HEALTH_RED", "HEALTH_AMBER", "POWER_BUTTON", "", > + "SIO_POWER_GOOD", "NMI_BUTTON", "RESET_BUTTON", "SIO_S5", > + "SIO_ONCONTROL", "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", ""; > + }; > + > + i2c2: i2c@c0002200 { > + 24c02@50 { > + compatible = "atmel,24c02"; > + pagesize = <8>; > + reg = <0x50>; > + }; > + }; > + }; > + > + vuhc: vuhc { > + compatible = "gpio-keys-polled"; > + poll-interval = <100>; > + > + PortOwner0 { > + label = "Port Owner"; > + linux,code = <200>; > + gpios = <&gpio 250 1>; > + }; > + > + PortOwner1 { > + label = "Port Owner"; > + linux,code = <201>; > + gpios = <&gpio 251 1>; > + }; > + > + PortOwner2 { > + label = "Port Owner"; > + linux,code = <202>; > + gpios = <&gpio 252 1>; > + }; > + }; > + > + gpio: gpio { > + gpio-line-names = > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "RESET_OUT", "NMI_OUT", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", "", > + "", "", "", "", "", "", "", "", "", ""; > + }; > + > + xreg_keys: xreg_keys { > + compatible = "gpio-keys-polled"; > + poll-interval = <100>; > + > + IdButton { > + label = "ID Button"; > + linux,code = <200>; > + gpios = <&xreg 60 1>; > + }; > + }; > + > + leds: leds { > + compatible = "gpio-leds"; > + > + power { > + gpios = <&xreg 6 0>; > + default-state = "off"; > + }; > + > + heartbeat { > + gpios = <&xreg 7 0>; > + default-state = "off"; > + }; > + > + identify { > + gpios = <&xreg 56 0>; > + default-state = "off"; > + }; > + > + health_red { > + gpios = <&xreg 57 0>; > + default-state = "off"; > + }; > + > + health_amber { > + gpios = <&xreg 58 0>; > + default-state = "off"; > + }; > + }; > + > +}; > diff --git a/arch/arm/boot/dts/hpe-gxp.dtsi b/arch/arm/boot/dts/hpe-gxp.dtsi > new file mode 100644 > index 000000000000..1a16840bb72f > --- /dev/null > +++ b/arch/arm/boot/dts/hpe-gxp.dtsi > @@ -0,0 +1,555 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Device Tree file for HPE GXP > + */ > + > +/dts-v1/; > +/ { > + model = "Hewlett Packard Enterprise GXP BMC"; > + compatible = "hpe,gxp"; > + #address-cells = <1>; > + #size-cells = <1>; > + > + cpus { > + #address-cells = <1>; > + #size-cells = <0>; > + > + cpu@0 { > + compatible = "arm,armv7"; > + device_type = "cpu"; > + reg = <0>; > + }; > + }; > + > + memory@40000000 { > + device_type = "memory"; > + reg = <0x40000000 0x20000000>; > + }; > + > + ahb { > + compatible = "simple-bus"; > + #address-cells = <1>; > + #size-cells = <1>; > + device_type = "soc"; > + ranges; > + > + vic0: interrupt-controller@ceff0000 { > + compatible = "arm,pl192-vic"; > + #address-cells = <1>; > + interrupt-controller; > + reg = <0xceff0000 0x1000>; > + #interrupt-cells = <1>; > + }; > + > + vic1: vic@80f00000 { > + compatible = "arm,pl192-vic"; > + #address-cells = <1>; > + interrupt-controller; > + reg = <0x80f00000 0x1000>; > + #interrupt-cells = <1>; > + }; > + > + timer0: timer@c0000080 { > + compatible = "hpe,gxp-timer"; > + reg = <0xc0000080 0x1>, <0xc0000094 0x01>, <0xc0000088 0x08>; > + interrupts = <0>; > + interrupt-parent = <&vic0>; > + clock-frequency = <400000000>; > + }; > + > + watchdog: watchdog@c0000090 { > + compatible = "hpe,gxp-wdt"; > + reg = <0xc0000090 0x02>, <0xc0000096 0x01>; > + }; > + > + uartc: serial@c00000f0 { > + compatible = "ns16550a"; > + reg = <0xc00000f0 0x8>; > + interrupts = <19>; > + interrupt-parent = <&vic0>; > + clock-frequency = <1846153>; > + reg-shift = <0>; > + }; > + > + uarta: serial@c00000e0 { > + compatible = "ns16550a"; > + reg = <0xc00000e0 0x8>; > + interrupts = <17>; > + interrupt-parent = <&vic0>; > + clock-frequency = <1846153>; > + reg-shift = <0>; > + }; > + > + uartb: serial@c00000e8 { > + compatible = "ns16550a"; > + reg = <0xc00000e8 0x8>; > + interrupts = <18>; > + interrupt-parent = <&vic0>; > + clock-frequency = <1846153>; > + reg-shift = <0>; > + }; > + > + vuart_a_cfg: vuarta_cfg@80fc0230 { > + compatible = "hpe,gxp-vuarta_cfg", "simple-mfd", "syscon"; > + reg = <0x80fc0230 0x100>; > + reg-io-width = <1>; > + }; > + > + vuart_a: vuart_a@80fd0200 { > + compatible = "hpe,gxp-vuart"; > + reg = <0x80fd0200 0x100>; > + interrupts = <2>; > + interrupt-parent = <&vic1>; > + clock-frequency = <1846153>; > + reg-shift = <0>; > + status = "okay"; > + serial-line = <3>; > + vuart_cfg = <&vuart_a_cfg>; > + }; > + > + usb0: ehci@cefe0000 { > + compatible = "generic-ehci"; > + reg = <0xcefe0000 0x100>; > + interrupts = <7>; > + interrupt-parent = <&vic0>; > + }; > + > + usb1: ohci@cefe0100 { > + compatible = "generic-ohci"; > + reg = <0xcefe0100 0x110>; > + interrupts = <6>; > + interrupt-parent = <&vic0>; > + }; > + > + spifi0: spifi@c0000200 { > + compatible = "hpe,gxp-spifi"; > + reg = <0xc0000200 0x80>, <0xc000c000 0x100>, <0xf8000000 0x8000000>; > + interrupts = <20>; > + interrupt-parent = <&vic0>; > + #address-cells = <1>; > + #size-cells = <0>; > + > + flash@0 { > + compatible = "jedec,spi-nor"; > + reg = <0>; > + partitions { > + compatible = "fixed-partitions"; > + #address-cells = <1>; > + #size-cells = <1>; > + > + u-boot@0 { > + label = "u-boot"; > + reg = <0x0 0x60000>; > + }; > + u-boot-env@60000 { > + label = "u-boot-env"; > + reg = <0x60000 0x20000>; > + }; > + kernel@80000 { > + label = "kernel"; > + reg = <0x80000 0x4c0000>; > + }; > + rofs@540000 { > + label = "rofs"; > + reg = <0x540000 0x1740000>; > + }; > + rwfs@1c80000 { > + label = "rwfs"; > + reg = <0x1c80000 0x250000>; > + }; > + section@1edf000{ > + label = "section"; > + reg = <0x1ed0000 0x130000>; > + }; > + }; > + }; > + > + flash@1 { > + compatible = "jedec,spi-nor"; > + reg = <1>; > + partitions { > + compatible = "fixed-partitions"; > + #address-cells = <1>; > + #size-cells = <1>; > + host-prime@0 { > + label = "host-prime"; > + reg = <0x0 0x02000000>; > + }; > + host-second@2000000 { > + label = "host-second"; > + reg = <0x02000000 0x02000000>; > + }; > + }; > + }; > + }; > + > + sram@d0000000 { > + compatible = "mtd-ram"; > + reg = <0xd0000000 0x80000>; > + bank-width = <1>; > + erase-size =<1>; > + #address-cells = <1>; > + #size-cells = <1>; > + partition@0 { > + label = "host-reserved"; > + reg = <0x0 0x10000>; > + }; > + partition@10000 { > + label = "nvram"; > + reg = <0x10000 0x70000>; > + }; > + }; > + > + srom@80fc0000 { > + compatible = "hpe,gxp-srom", "simple-mfd", "syscon"; > + reg = <0x80fc0000 0x100>; > + }; > + > + vrom@58000000 { > + compatible = "mtd-ram"; > + bank-width = <4>; > + reg = <0x58000000 0x4000000>; > + #address-cells = <1>; > + #size-cells = <1>; > + partition@0 { > + label = "vrom-prime"; > + reg = <0x0 0x2000000>; > + }; > + partition@2000000 { > + label = "vrom-second"; > + reg = <0x2000000 0x2000000>; > + }; > + }; > + > + i2cg: i2cg@c00000f8 { > + compatible = "syscon"; > + reg = <0xc00000f8 0x08>; > + }; > + > + i2c0: i2c@c0002000 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002000 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c1: i2c@c0002100 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002100 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c2: i2c@c0002200 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002200 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c3: i2c@c0002300 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002300 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c4: i2c@c0002400 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002400 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c5: i2c@c0002500 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002500 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + }; > + > + i2c6: i2c@c0002600 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002600 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c7: i2c@c0002700 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002700 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c8: i2c@c0002800 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002800 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c9: i2c@c0002900 { > + compatible = "hpe,gxp-i2c"; > + reg = <0xc0002900 0x70>; > + interrupts = <9>; > + interrupt-parent = <&vic0>; > + i2cg-handle = <&i2cg>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2cmux@d1000074 { > + compatible = "i2c-mux-reg"; > + i2c-parent = <&i2c4>; > + reg = <0xd1000074 1>; > + #address-cells = <1>; > + #size-cells = <0>; > + > + i2c4@1 { > + reg = <1>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c4@2 { > + reg = <2>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c4@3 { > + reg = <3>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c4@4 { > + reg = <4>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + }; > + > + i2cmux@d1000076 { > + compatible = "i2c-mux-reg"; > + i2c-parent = <&i2c6>; > + reg = <0xd1000076 1>; > + #address-cells = <1>; > + #size-cells = <0>; > + > + i2c6@1 { > + reg = <1>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c6@2 { > + reg = <2>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c6@3 { > + reg = <3>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c6@4 { > + reg = <4>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + > + i2c6@5 { > + reg = <5>; > + #address-cells = <1>; > + #size-cells = <0>; > + }; > + }; > + > + mdio0: mdio@c0004080 { > + compatible = "hpe,gxp-umac-mdio"; > + reg = <0xc0004080 0x10>; > + #address-cells = <1>; > + #size-cells = <0>; > + ext_phy0: ethernt-phy@0 { > + compatible = "ethernet-phy-ieee802.3-c22"; > + phy-mode = "sgmii"; > + reg = <0>; > + }; > + }; > + > + mdio1: mdio@c0005080 { > + compatible = "hpe,gxp-umac-mdio"; > + reg = <0xc0005080 0x10>; > + #address-cells = <1>; > + #size-cells = <0>; > + int_phy0: ethernt-phy@0 { > + compatible = "ethernet-phy-ieee802.3-c22"; > + phy-mode = "gmii"; > + reg = <0>; > + }; > + > + int_phy1: ethernt-phy@1 { > + compatible = "ethernet-phy-ieee802.3-c22"; > + phy-mode = "gmii"; > + reg = <1>; > + }; > + }; > + > + umac0: umac@c0004000 { > + compatible = "hpe,gxp-umac"; > + reg = <0xc0004000 0x80>; > + interrupts = <10>; > + interrupt-parent = <&vic0>; > + phy-handle = <&ext_phy0>; > + int-phy-handle = <&int_phy0>; > + }; > + > + umac1: umac@c0005000 { > + compatible = "hpe,gxp-umac"; > + use-ncsi; > + reg = <0xc0005000 0x80>; > + interrupts = <11>; > + interrupt-parent = <&vic0>; > + phy-handle = <&int_phy1>; > + }; > + > + kcs_conf: kcs_conf@80fc0430 { > + compatible = "hpe,gxp-kcs-bmc-cfg", "simple-mfd", "syscon"; > + reg = <0x80fc0430 0x100>; > + }; > + > + kcs_reg: kcs_reg@80fd0400 { > + compatible = "hpe,gxp-kcs-bmc"; > + reg = <0x80fd0400 0x8>; > + interrupts = <6>; > + interrupt-parent = <&vic1>; > + kcs_chan = <1>; > + status = "okay"; > + kcs-bmc-cfg = <&kcs_conf>; > + }; > + > + thumbnail: thumbnail@c0000500 { > + compatible = "hpe,gxp-thumbnail"; > + reg = <0xc0000500 0x20>; > + bits-per-pixel = <32>; > + width = <800>; > + height = <600>; > + }; > + > + fanctrl: fanctrl@c1000c00 { > + compatible = "hpe,gxp-fan-ctrl"; > + reg = <0xc1000c00 0x200>; > + xreg_handle = <&xreg>; > + fn2_handle = <&fn2>; > + }; > + > + fn2: fn2@80200000 { > + compatible = "hpe,gxp-fn2", "simple-mfd", "syscon"; > + reg = <0x80200000 0x100000>; > + xreg_handle = <&xreg>; > + interrupts = <0>; > + interrupt-parent = <&vic1>; > + #gpio-cells = <2>; > + chif { > + compatible = "hpe,gxp-chif"; > + interrupts = <12>; > + }; > + }; > + > + xreg: xreg@d1000300 { > + compatible = "hpe,gxp-xreg", "simple-mfd", "syscon"; > + reg = <0xd1000300 0xFF>; > + interrupts = <26>; > + interrupt-parent = <&vic0>; > + #gpio-cells = <2>; > + }; > + > + csm: csm@8000005c { > + compatible = "hpe,gxp-csm", "simple-mfd", "syscon"; > + reg = <0x8000005c 0x2>, <0x800000de 0x1>, <0x800000e7 0x1>; > + }; > + > + vuhc0: vuhc@80400000 { > + compatible = "syscon"; > + reg = <0x80400000 0x80>; > + }; > + > + udcg: udcg@80400800 { > + compatible = "syscon"; > + reg = <0x80400800 0x200>; > + }; > + > + post@800000a0 { > + compatible = "hpe,gxp-dbg"; > + reg = <0x800000a0 0x20>; > + interrupts = <10>; > + interrupt-parent = <&vic1>; > + }; > + > + coretemp: coretemp@c0000130 { > + compatible = "hpe,gxp-coretemp"; > + reg = <0xc0000130 0x8>; > + }; > + }; > + > + gpio: gpio { > + compatible = "hpe,gxp-gpio"; > + #gpio-cells = <2>; > + csm_handle = <&csm>; > + vuhc0_handle = <&vuhc0>; > + }; > + > + clocks { > + osc: osc { > + compatible = "fixed-clock"; > + #clock-cells = <0>; > + clock-output-names = "osc"; > + clock-frequency = <33333333>; > + }; > + > + iopclk: iopclk { > + compatible = "fixed-clock"; > + #clock-cells = <0>; > + clocks = <&osc>; > + clock-out-put-names = "iopclk"; > + clock-frequency = <400000000>; > + }; > + > + memclk: memclk { > + compatible = "fixed-clock"; > + #clock-cells = <0>; > + clocks = <&osc>; > + clock-out-put-names = "memclk"; > + clock-frequency = <800000000>; > + }; > + }; > +}; > diff --git a/arch/arm/configs/gxp_defconfig b/arch/arm/configs/gxp_defconfig > new file mode 100644 > index 000000000000..f37c6630e06d > --- /dev/null > +++ b/arch/arm/configs/gxp_defconfig > @@ -0,0 +1,243 @@ > +CONFIG_KERNEL_XZ=y > +CONFIG_DEFAULT_HOSTNAME="gxp" > +CONFIG_SYSVIPC=y > +CONFIG_NO_HZ=y > +CONFIG_HIGH_RES_TIMERS=y > +CONFIG_BSD_PROCESS_ACCT=y > +CONFIG_BSD_PROCESS_ACCT_V3=y > +CONFIG_LOG_BUF_SHIFT=18 > +CONFIG_CFS_BANDWIDTH=y > +CONFIG_RT_GROUP_SCHED=y > +CONFIG_CGROUP_FREEZER=y > +CONFIG_CGROUP_DEVICE=y > +CONFIG_CGROUP_CPUACCT=y > +CONFIG_NAMESPACES=y > +CONFIG_SCHED_AUTOGROUP=y > +CONFIG_RELAY=y > +CONFIG_BLK_DEV_INITRD=y > +CONFIG_CC_OPTIMIZE_FOR_SIZE=y > +CONFIG_KALLSYMS_ALL=y > +CONFIG_EMBEDDED=y > +# CONFIG_COMPAT_BRK is not set > +CONFIG_SLAB=y > +CONFIG_ARCH_MULTI_V6=y > +CONFIG_ARCH_HPE=y > +CONFIG_ARCH_HPE_GXP=y > +CONFIG_SECCOMP=y > +# CONFIG_ATAGS is not set > +CONFIG_ZBOOT_ROM_TEXT=0x0 > +CONFIG_ZBOOT_ROM_BSS=0x0 > +# CONFIG_SUSPEND is not set > +CONFIG_JUMP_LABEL=y > +# CONFIG_STRICT_KERNEL_RWX is not set > +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set > +CONFIG_KSM=y > +CONFIG_CLEANCACHE=y > +CONFIG_NET=y > +CONFIG_PACKET=y > +CONFIG_PACKET_DIAG=y > +CONFIG_UNIX=y > +CONFIG_UNIX_DIAG=y > +CONFIG_XFRM_USER=y > +CONFIG_XFRM_STATISTICS=y > +CONFIG_INET=y > +CONFIG_VLAN_8021Q=y > +CONFIG_NETLINK_DIAG=y > +CONFIG_NET_NCSI=y > +# CONFIG_WIRELESS is not set > +CONFIG_DEVTMPFS=y > +CONFIG_DEVTMPFS_MOUNT=y > +# CONFIG_STANDALONE is not set > +CONFIG_MTD=y > +CONFIG_MTD_BLOCK=y > +CONFIG_MTD_PHYSMAP=y > +CONFIG_MTD_PHYSMAP_OF=y > +CONFIG_MTD_PLATRAM=y > +CONFIG_MTD_SPI_NOR=y > +CONFIG_SPI_GXP_SPIFI=y > +CONFIG_BLK_DEV_NULL_BLK=y > +CONFIG_BLK_DEV_LOOP=y > +CONFIG_BLK_DEV_NBD=y > +CONFIG_BLK_DEV_RAM=y > +CONFIG_EEPROM_AT24=y > +CONFIG_SCSI=y > +CONFIG_BLK_DEV_SD=y > +# CONFIG_SCSI_LOWLEVEL is not set > +CONFIG_NETDEVICES=y > +# CONFIG_NET_VENDOR_ALACRITECH is not set > +# CONFIG_NET_VENDOR_AMAZON is not set > +# CONFIG_NET_VENDOR_AQUANTIA is not set > +# CONFIG_NET_VENDOR_ARC is not set > +# CONFIG_NET_VENDOR_AURORA is not set > +# CONFIG_NET_VENDOR_BROADCOM is not set > +# CONFIG_NET_VENDOR_CADENCE is not set > +# CONFIG_NET_VENDOR_CAVIUM is not set > +# CONFIG_NET_VENDOR_CIRRUS is not set > +# CONFIG_NET_VENDOR_CORTINA is not set > +# CONFIG_NET_VENDOR_EZCHIP is not set > +# CONFIG_NET_VENDOR_FARADAY is not set > +# CONFIG_NET_VENDOR_GOOGLE is not set > +# CONFIG_NET_VENDOR_HISILICON is not set > +# CONFIG_NET_VENDOR_HUAWEI is not set > +# CONFIG_NET_VENDOR_INTEL is not set > +# CONFIG_NET_VENDOR_MARVELL is not set > +# CONFIG_NET_VENDOR_MELLANOX is not set > +# CONFIG_NET_VENDOR_MICREL is not set > +# CONFIG_NET_VENDOR_MICROCHIP is not set > +# CONFIG_NET_VENDOR_MICROSEMI is not set > +# CONFIG_NET_VENDOR_NATSEMI is not set > +# CONFIG_NET_VENDOR_NETRONOME is not set > +# CONFIG_NET_VENDOR_NI is not set > +# CONFIG_NET_VENDOR_QUALCOMM is not set > +# CONFIG_NET_VENDOR_RENESAS is not set > +# CONFIG_NET_VENDOR_ROCKER is not set > +# CONFIG_NET_VENDOR_SAMSUNG is not set > +# CONFIG_NET_VENDOR_SEEQ is not set > +# CONFIG_NET_VENDOR_SOLARFLARE is not set > +# CONFIG_NET_VENDOR_SMSC is not set > +# CONFIG_NET_VENDOR_SOCIONEXT is not set > +# CONFIG_NET_VENDOR_STMICRO is not set > +# CONFIG_NET_VENDOR_SYNOPSYS is not set > +# CONFIG_NET_VENDOR_VIA is not set > +# CONFIG_NET_VENDOR_WIZNET is not set > +# CONFIG_NET_VENDOR_XILINX is not set > +CONFIG_UMAC=y > +# CONFIG_USB_NET_DRIVERS is not set > +# CONFIG_WLAN is not set > +# CONFIG_INPUT_LEDS is not set > +CONFIG_INPUT_EVDEV=y > +# CONFIG_KEYBOARD_ATKBD is not set > +CONFIG_KEYBOARD_GPIO=y > +CONFIG_KEYBOARD_GPIO_POLLED=y > +# CONFIG_INPUT_MOUSE is not set > +CONFIG_SERIO_LIBPS2=y > +CONFIG_VT_HW_CONSOLE_BINDING=y > +# CONFIG_LEGACY_PTYS is not set > +CONFIG_SERIAL_8250=y > +# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set > +CONFIG_SERIAL_8250_CONSOLE=y > +CONFIG_SERIAL_8250_NR_UARTS=6 > +CONFIG_SERIAL_8250_RUNTIME_UARTS=6 > +CONFIG_SERIAL_8250_EXTENDED=y > +CONFIG_SERIAL_8250_SHARE_IRQ=y > +CONFIG_SERIAL_8250_GXP_VUART=y > +CONFIG_SERIAL_OF_PLATFORM=y > +CONFIG_TTY_PRINTK=y > +CONFIG_IPMI_HANDLER=y > +CONFIG_IPMI_DEVICE_INTERFACE=y > +CONFIG_IPMI_SI=y > +CONFIG_IPMI_SSIF=y > +CONFIG_HPE_KCS_IPMI_BMC=y > +CONFIG_HW_RANDOM_TIMERIOMEM=y > +CONFIG_I2C_CHARDEV=y > +CONFIG_I2C_GXP=y > +CONFIG_I2C_SLAVE=y > +CONFIG_I2C_SLAVE_EEPROM=y > +CONFIG_SPI=y > +CONFIG_GPIOLIB=y > +CONFIG_GPIO_SYSFS=y > +CONFIG_GPIO_GXP=y > +CONFIG_SENSORS_EMC1403=y > +CONFIG_SENSORS_GXP_FAN_CTRL=y > +CONFIG_SENSORS_GXP_CORETEMP=y > +CONFIG_SENSORS_GXP_PSU=y > +CONFIG_SENSORS_GXP_POWER=y > +CONFIG_WATCHDOG=y > +CONFIG_GXP_WATCHDOG=y > +CONFIG_MFD_SYSCON=y > +CONFIG_FB=y > +CONFIG_FB_THUMBNAIL=y > +CONFIG_FB_SIMPLE=y > +CONFIG_USB=y > +CONFIG_USB_ANNOUNCE_NEW_DEVICES=y > +CONFIG_USB_EHCI_HCD=y > +CONFIG_USB_EHCI_ROOT_HUB_TT=y > +CONFIG_USB_OHCI_HCD=y > +CONFIG_USB_OHCI_HCD_PLATFORM=y > +CONFIG_USB_STORAGE=y > +CONFIG_USB_GADGET=y > +CONFIG_USB_GXP_UDC=y > +CONFIG_USB_CONFIGFS=y > +CONFIG_USB_CONFIGFS_SERIAL=y > +CONFIG_USB_CONFIGFS_ACM=y > +CONFIG_USB_CONFIGFS_OBEX=y > +CONFIG_USB_CONFIGFS_NCM=y > +CONFIG_USB_CONFIGFS_ECM=y > +CONFIG_USB_CONFIGFS_ECM_SUBSET=y > +CONFIG_USB_CONFIGFS_RNDIS=y > +CONFIG_USB_CONFIGFS_EEM=y > +CONFIG_USB_CONFIGFS_MASS_STORAGE=y > +CONFIG_USB_CONFIGFS_F_LB_SS=y > +CONFIG_USB_CONFIGFS_F_FS=y > +CONFIG_USB_CONFIGFS_F_HID=y > +CONFIG_USB_CONFIGFS_F_PRINTER=y > +CONFIG_NEW_LEDS=y > +CONFIG_LEDS_CLASS=y > +CONFIG_LEDS_GPIO=y > +CONFIG_LEDS_TRIGGERS=y > +CONFIG_LEDS_TRIGGER_TIMER=y > +CONFIG_LEDS_TRIGGER_ONESHOT=y > +CONFIG_LEDS_TRIGGER_MTD=y > +CONFIG_LEDS_TRIGGER_HEARTBEAT=y > +CONFIG_LEDS_TRIGGER_CPU=y > +CONFIG_LEDS_TRIGGER_GPIO=y > +CONFIG_LEDS_TRIGGER_DEFAULT_ON=y > +CONFIG_LEDS_TRIGGER_TRANSIENT=y > +CONFIG_LEDS_TRIGGER_PANIC=y > +# CONFIG_VIRTIO_MENU is not set > +# CONFIG_IOMMU_SUPPORT is not set > +CONFIG_HPE_GXP_XREG=y > +CONFIG_HPE_GXP_FN2=y > +CONFIG_HPE_GXP_CSM=y > +CONFIG_HPE_GXP_SROM=y > +CONFIG_FANOTIFY=y > +CONFIG_OVERLAY_FS=y > +CONFIG_OVERLAY_FS_REDIRECT_DIR=y > +CONFIG_TMPFS=y > +CONFIG_TMPFS_POSIX_ACL=y > +CONFIG_JFFS2_FS=y > +# CONFIG_JFFS2_FS_WRITEBUFFER is not set > +CONFIG_JFFS2_SUMMARY=y > +CONFIG_JFFS2_FS_XATTR=y > +# CONFIG_JFFS2_FS_POSIX_ACL is not set > +# CONFIG_JFFS2_FS_SECURITY is not set > +CONFIG_SQUASHFS=y > +CONFIG_SQUASHFS_XZ=y > +CONFIG_SQUASHFS_4K_DEVBLK_SIZE=y > +# CONFIG_NETWORK_FILESYSTEMS is not set > +CONFIG_NLS_CODEPAGE_437=y > +CONFIG_NLS_ASCII=y > +CONFIG_NLS_ISO8859_1=y > +CONFIG_NLS_UTF8=y > +CONFIG_CRYPTO_CCM=y > +CONFIG_CRYPTO_GCM=y > +CONFIG_CRYPTO_CRC32C=y > +CONFIG_CRYPTO_ARC4=y > +CONFIG_CRYPTO_DEFLATE=y > +CONFIG_CRYPTO_LZO=y > +CONFIG_CRYPTO_ZSTD=y > +CONFIG_CRYPTO_USER_API_HASH=y > +# CONFIG_CRYPTO_HW is not set > +CONFIG_CRC16=y > +# CONFIG_XZ_DEC_ARM is not set > +# CONFIG_XZ_DEC_ARMTHUMB is not set > +CONFIG_DMA_API_DEBUG=y > +CONFIG_PRINTK_TIME=y > +CONFIG_BOOT_PRINTK_DELAY=y > +CONFIG_DYNAMIC_DEBUG=y > +CONFIG_DEBUG_INFO=y > +# CONFIG_ENABLE_MUST_CHECK is not set > +CONFIG_MAGIC_SYSRQ=y > +CONFIG_PANIC_ON_OOPS=y > +CONFIG_FUNCTION_PROFILER=y > +CONFIG_STACK_TRACER=y > +CONFIG_SCHED_TRACER=y > +CONFIG_STRICT_DEVMEM=y > +CONFIG_DEBUG_USER=y > +CONFIG_DEBUG_LL=y > +CONFIG_DEBUG_LL_UART_8250=y > +CONFIG_DEBUG_UART_PHYS=0xC00000F0 > +CONFIG_DEBUG_UART_VIRT=0xF00000F0 > +CONFIG_DEBUG_UART_8250_SHIFT=0 > +CONFIG_EARLY_PRINTK=y > +CONFIG_TEST_KSTRTOX=y > diff --git a/arch/arm/mach-hpe/Kconfig b/arch/arm/mach-hpe/Kconfig > new file mode 100644 > index 000000000000..cc63f2be6c9c > --- /dev/null > +++ b/arch/arm/mach-hpe/Kconfig > @@ -0,0 +1,21 @@ > +# SPDX-License-Identifier: GPL-2.0-only > +menuconfig ARCH_HPE > + bool "HPE SoC support" > + help > + This enables support for HPE ARM based SoC chips > +if ARCH_HPE > + > +config ARCH_HPE_GXP > + bool "HPE GXP SoC" > + select ARM_VIC > + select PINCTRL > + select IRQ_DOMAIN > + select GENERIC_IRQ_CHIP > + select MULTI_IRQ_HANDLER > + select SPARSE_IRQ > + select CLKSRC_MMIO > + depends on ARCH_MULTI_V7 > + help > + Support for GXP SoCs > + > +endif > diff --git a/arch/arm/mach-hpe/Makefile b/arch/arm/mach-hpe/Makefile > new file mode 100644 > index 000000000000..8b0a91234df4 > --- /dev/null > +++ b/arch/arm/mach-hpe/Makefile > @@ -0,0 +1 @@ > +obj-$(CONFIG_ARCH_HPE_GXP) += gxp.o > diff --git a/arch/arm/mach-hpe/gxp.c b/arch/arm/mach-hpe/gxp.c > new file mode 100644 > index 000000000000..a37838247948 > --- /dev/null > +++ b/arch/arm/mach-hpe/gxp.c > @@ -0,0 +1,62 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (C) 2022 Hewlett-Packard Enterprise Development Company, L.P. > + * > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + */ > + > + > +#include <linux/init.h> > +#include <asm/mach/arch.h> > +#include <asm/mach/map.h> > +#include <linux/of.h> > +#include <linux/of_platform.h> > +#include <linux/clk-provider.h> > +#include <linux/clocksource.h> > + > +#define IOP_REGS_PHYS_BASE 0xc0000000 > +#define IOP_REGS_VIRT_BASE 0xf0000000 > +#define IOP_REGS_SIZE (240*SZ_1M) > + > +#define IOP_EHCI_USBCMD 0x0efe0010 > + > +static struct map_desc gxp_io_desc[] __initdata = { > + { > + .virtual = (unsigned long)IOP_REGS_VIRT_BASE, > + .pfn = __phys_to_pfn(IOP_REGS_PHYS_BASE), > + .length = IOP_REGS_SIZE, > + .type = MT_DEVICE, > + }, > +}; > + > +void __init gxp_map_io(void) > +{ > + iotable_init(gxp_io_desc, ARRAY_SIZE(gxp_io_desc)); > +} > + > +static void __init gxp_dt_init(void) > +{ > + /*reset EHCI host controller for clear start*/ > + __raw_writel(0x00080002, > + (void __iomem *)(IOP_REGS_VIRT_BASE + IOP_EHCI_USBCMD)); > + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); > +} > + > +static void gxp_restart(enum reboot_mode mode, const char *cmd) > +{ > + __raw_writel(1, (void __iomem *) IOP_REGS_VIRT_BASE); > +} > + > +static const char * const gxp_board_dt_compat[] = { > + "HPE,GXP", > + NULL, > +}; > + > +DT_MACHINE_START(GXP_DT, "HPE GXP") > + .init_machine = gxp_dt_init, > + .map_io = gxp_map_io, > + .restart = gxp_restart, > + .dt_compat = gxp_board_dt_compat, > +MACHINE_END > diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig > index cfb8ea0df3b1..5916dade7608 100644 > --- a/drivers/clocksource/Kconfig > +++ b/drivers/clocksource/Kconfig > @@ -617,6 +617,14 @@ config CLKSRC_ST_LPC > Enable this option to use the Low Power controller timer > as clocksource. > > +config GXP_TIMER > + bool "GXP timer driver" > + depends on ARCH_HPE > + default y > + help > + Provides a driver for the timer control found on HPE > + GXP SOCs. This is required for all GXP SOCs. > + > config ATCPIT100_TIMER > bool "ATCPIT100 timer driver" > depends on NDS32 || COMPILE_TEST > diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile > index fa5f624eadb6..ffca09ec34de 100644 > --- a/drivers/clocksource/Makefile > +++ b/drivers/clocksource/Makefile > @@ -89,3 +89,4 @@ obj-$(CONFIG_GX6605S_TIMER) += timer-gx6605s.o > obj-$(CONFIG_HYPERV_TIMER) += hyperv_timer.o > obj-$(CONFIG_MICROCHIP_PIT64B) += timer-microchip-pit64b.o > obj-$(CONFIG_MSC313E_TIMER) += timer-msc313e.o > +obj-$(CONFIG_GXP_TIMER) += gxp_timer.o > diff --git a/drivers/clocksource/gxp_timer.c b/drivers/clocksource/gxp_timer.c > new file mode 100644 > index 000000000000..e3c617036e0d > --- /dev/null > +++ b/drivers/clocksource/gxp_timer.c > @@ -0,0 +1,158 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (C) 2022 Hewlett-Packard Enterprise Development Company, L.P. > + * > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + */ > + > +#include <linux/bitops.h> > +#include <linux/clockchips.h> > +#include <linux/clocksource.h> > +#include <linux/interrupt.h> > +#include <linux/irqreturn.h> > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include <linux/of_address.h> > +#include <linux/of_irq.h> > +#include <linux/of_platform.h> > +#include <linux/slab.h> > +#include <linux/string.h> > +#include <linux/sched_clock.h> > + > +#include <asm/irq.h> > + > +#define TIMER0_FREQ 1000000 > +#define TIMER1_FREQ 1000000 > + > +#define MASK_TCS_ENABLE 0x01 > +#define MASK_TCS_PERIOD 0x02 > +#define MASK_TCS_RELOAD 0x04 > +#define MASK_TCS_TC 0x80 > + > +struct gxp_timer { > + void __iomem *counter; > + void __iomem *control; > + struct clock_event_device evt; > +}; > + > +static void __iomem *system_clock __read_mostly; > + > +static u64 notrace gxp_sched_read(void) > +{ > + return readl_relaxed(system_clock); > +} > + > +static int gxp_time_set_next_event(unsigned long event, > + struct clock_event_device *evt_dev) > +{ > + struct gxp_timer *timer = container_of(evt_dev, struct gxp_timer, evt); > + /*clear TC by write 1 and disable timer int and counting*/ > + writeb_relaxed(MASK_TCS_TC, timer->control); > + /*update counter value*/ > + writel_relaxed(event, timer->counter); > + /*enable timer counting and int*/ > + writeb_relaxed(MASK_TCS_TC|MASK_TCS_ENABLE, timer->control); > + > + return 0; > +} > + > +static irqreturn_t gxp_time_interrupt(int irq, void *dev_id) > +{ > + struct gxp_timer *timer = dev_id; > + void (*event_handler)(struct clock_event_device *timer); > + > + > + if (readb_relaxed(timer->control) & MASK_TCS_TC) { > + writeb_relaxed(MASK_TCS_TC, timer->control); > + > + event_handler = READ_ONCE(timer->evt.event_handler); > + if (event_handler) > + event_handler(&timer->evt); > + return IRQ_HANDLED; > + } else { > + return IRQ_NONE; > + } > +} > + > +static int __init gxp_timer_init(struct device_node *node) > +{ > + void __iomem *base_counter; > + void __iomem *base_control; > + u32 freq; > + int ret, irq; > + struct gxp_timer *gxp_timer; > + > + base_counter = of_iomap(node, 0); > + if (!base_counter) { > + pr_err("Can't remap counter registers"); > + return -ENXIO; > + } > + > + base_control = of_iomap(node, 1); > + if (!base_control) { > + pr_err("Can't remap control registers"); > + return -ENXIO; > + } > + > + system_clock = of_iomap(node, 2); > + if (!system_clock) { > + pr_err("Can't remap control registers"); > + return -ENXIO; > + } > + > + if (of_property_read_u32(node, "clock-frequency", &freq)) { > + pr_err("Can't read clock-frequency\n"); > + goto err_iounmap; > + } > + > + sched_clock_register(gxp_sched_read, 32, freq); > + clocksource_mmio_init(system_clock, node->name, freq, > + 300, 32, clocksource_mmio_readl_up); > + > + irq = irq_of_parse_and_map(node, 0); > + if (irq <= 0) { > + ret = -EINVAL; > + pr_err("GXP Timer Can't parse IRQ %d", irq); > + goto err_iounmap; > + } > + > + gxp_timer = kzalloc(sizeof(*gxp_timer), GFP_KERNEL); > + if (!gxp_timer) { > + ret = -ENOMEM; > + goto err_iounmap; > + } > + > + gxp_timer->counter = base_counter; > + gxp_timer->control = base_control; > + gxp_timer->evt.name = node->name; > + gxp_timer->evt.rating = 300; > + gxp_timer->evt.features = CLOCK_EVT_FEAT_ONESHOT; > + gxp_timer->evt.set_next_event = gxp_time_set_next_event; > + gxp_timer->evt.cpumask = cpumask_of(0); > + > + if (request_irq(irq, gxp_time_interrupt, IRQF_TIMER | IRQF_SHARED, > + node->name, gxp_timer)) { > + pr_err("%s: request_irq() failed\n", "GXP Timer Tick"); > + goto err_timer_free; > + } > + > + clockevents_config_and_register(&gxp_timer->evt, TIMER0_FREQ, > + 0xf, 0xffffffff); > + > + pr_info("gxp: system timer (irq = %d)\n", irq); > + return 0; > + > + > +err_timer_free: > + kfree(gxp_timer); > + > +err_iounmap: > + iounmap(system_clock); > + iounmap(base_control); > + iounmap(base_counter); > + return ret; > +} > + > +TIMER_OF_DECLARE(gxp, "hpe,gxp-timer", gxp_timer_init); > -- > 2.17.1 >
Hi Nick, good to see all this stuff coming mainline, On Wed, Feb 02, 2022 at 10:52:50AM -0600, nick.hawkins@hpe.com wrote: > From: Nick Hawkins <nick.hawkins@hpe.com> > > GXP is the name of the HPE SoC. > This SoC is used to implement BMC features of HPE servers > (all ProLiant, Synergy, and many Apollo, and Superdome machines) > It does support many features including: > ARMv7 architecture, and it is based on a Cortex A9 core > Use an AXI bus to which > a memory controller is attached, as well as > multiple SPI interfaces to connect boot flash, > and ROM flash, a 10/100/1000 Mac engine which > supports SGMII (2 ports) and RMII > Multiple I2C engines to drive connectivity with a host infrastructure > A video engine which support VGA and DP, as well as > an hardware video encoder > Multiple PCIe ports > A PECI interface, and LPC eSPI > Multiple UART for debug purpose, and Virtual UART for host connectivity > A GPIO engine > This Patch Includes: > Documentation for device tree bindings > Device Tree Bindings > GXP Timer Support > GXP Architecture Support > > Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com> > --- > .../bindings/display/hpe,gxp-thumbnail.txt | 21 + > .../devicetree/bindings/gpio/hpe,gxp-gpio.txt | 16 + ... All new bindings must be in the DT-schema format (yaml files). This enables a lot of syntax checks and validation. We are slowly migrating away from the .txt based bindings. Also, for new bindings please follow the guide lines listed in Documentation/devicetree/bindings/submitting-patches.rst Consider including the bindings with the drivers using the bindings so things have a more natural split. Sam
> This is far too big for a single patch. It needs to be broken into > functional chunks that can be reviewed individually. Each driver and > each device tree change along with it's accompanying code need to be > done in individual patches. The way it is it can't be reviewed in any > sane manner. > -corey Thanks for your feedback. We are getting a little bit lost here, as our plan was to submit initial - bindings - dts for SoC and 1 board - initial platform init code Then drivers code avoiding to send many dts updates which might complexify the review. We wanted to send all drivers code to relevant reviewers by tomorrow. So, what you are asking ( do not worry I am not trying to negotiate, I just want to avoid English misunderstandings as I am French) is to send per driver - binding - dts update - driver code For each driver through different submission (with each of them containing the 3 associated parts) ? What shall be the initial one in our case as we are introducing a platform ? An empty dts infrastructure and then we make it grow one step at a time ? vejmarie 
On Wed, Feb 2, 2022 at 7:14 PM Verdun, Jean-Marie <verdun@hpe.com> wrote: > > > This is far too big for a single patch. It needs to be broken into > > functional chunks that can be reviewed individually. Each driver and > > each device tree change along with it's accompanying code need to be > > done in individual patches. The way it is it can't be reviewed in any > > sane manner. > > > -corey > > Thanks for your feedback. We are getting a little bit lost here, as our plan was to submit initial > > - bindings > - dts for SoC and 1 board > - initial platform init code > > Then drivers code avoiding to send many dts updates which might complexify the > review. We wanted to send all drivers code to relevant reviewers by tomorrow. > > So, what you are asking ( do not worry I am not trying to negotiate, I just want > to avoid English misunderstandings as I am French) is to send per driver > > - binding > - dts update > - driver code > > For each driver through different submission (with each of them containing the > 3 associated parts) ? > > What shall be the initial one in our case as we are introducing a platform ? > An empty dts infrastructure and then we make it grow one step at a time ? Ideally, what I prefer to see is a series of patches for all "essential" drivers and the platform code that includes: - one patch for each new binding - one patch for each new driver - one patch that hooks up arch/arm/mach-hpe/, MAINTAINERS and any other changes to arch/arm/ other than dts - one patch that adds the initial .dts and .dtsi files, with all the devices added that have a valid binding, no need to split this up any further This should include everything you need to boot into an initramfs shell, typically cpu, serial, timer, clk, pinctrl, gpio, irqchip. We will merge these as a git branch in the soc tree. In parallel, you can work with subsystem maintainers for the "non-essential" drivers to review any other driver and binding, e.g. drm/kms, network, i2c, pci, usb, etc. The patches for the corresponding .dts additions also go through the soc tree, but to make things simpler, you can send those in for a later release. Arnd
On Wed, Feb 02, 2022 at 06:14:57PM +0000, Verdun, Jean-Marie wrote: > > This is far too big for a single patch. It needs to be broken into > > functional chunks that can be reviewed individually. Each driver and > > each device tree change along with it's accompanying code need to be > > done in individual patches. The way it is it can't be reviewed in any > > sane manner. > > > -corey > > Thanks for your feedback. We are getting a little bit lost here, as our plan was to submit initial > > - bindings > - dts for SoC and 1 board > - initial platform init code > > Then drivers code avoiding to send many dts updates which might complexify the review. We wanted to send all drivers code to relevant reviewers by tomorrow. > > So, what you are asking ( do not worry I am not trying to negotiate, I just want to avoid English misunderstandings as I am French) is to send per driver > > - binding > - dts update > - driver code > > For each driver through different submission (with each of them containing the 3 associated parts) ? Arnd gave an excellent explaination for this. To be clear, you need to split out changes to individual subsystems and submit those to the maintainers for that subsystem and not send them to everyone. That way you reduce sending emails to people who don't need to see them. Once you have a set of patches for a subsystem, you can submit them as one set. That is generally preferred. The "git send-email" or "git format-patch" tools are generally what we use, they let you compose a header message where you can give an overall explaination, then it sends the individual changes as followup messages to the header message. -corey > > What shall be the initial one in our case as we are introducing a platform ? An empty dts infrastructure and then we make it grow one step at a time ? > > vejmarie > >  > > > > _______________________________________________ > Openipmi-developer mailing list > Openipmi-developer@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/openipmi-developer
> .../bindings/display/hpe,gxp-thumbnail.txt | 21 + > .../devicetree/bindings/gpio/hpe,gxp-gpio.txt | 16 + > .../devicetree/bindings/i2c/hpe,gxp-i2c.txt | 19 + > .../bindings/ipmi/hpegxp-kcs-bmc-cfg.txt | 13 + > .../bindings/ipmi/hpegxp-kcs-bmc.txt | 21 + Hi Nick In addiiton to the other feedback also given, for new bindings you should be using yaml, not txt. You then gain validation of the bindings. Andrew
On 02/02/2022 17:52, nick.hawkins@hpe.com wrote: > From: Nick Hawkins <nick.hawkins@hpe.com> > > GXP is the name of the HPE SoC. > This SoC is used to implement BMC features of HPE servers > (all ProLiant, Synergy, and many Apollo, and Superdome machines) > It does support many features including: > ARMv7 architecture, and it is based on a Cortex A9 core > Use an AXI bus to which > a memory controller is attached, as well as > multiple SPI interfaces to connect boot flash, > and ROM flash, a 10/100/1000 Mac engine which > supports SGMII (2 ports) and RMII > Multiple I2C engines to drive connectivity with a host infrastructure > A video engine which support VGA and DP, as well as > an hardware video encoder > Multiple PCIe ports > A PECI interface, and LPC eSPI > Multiple UART for debug purpose, and Virtual UART for host connectivity > A GPIO engine > This Patch Includes: > Documentation for device tree bindings > Device Tree Bindings > GXP Timer Support > GXP Architecture Support > 1. Please version your patchses and document the changes under ---. 2. With your v1 I responded what has to be separate patch. This was totally ignored here, so no. You have to follow this. 3. Please run checkpatch and be sure there are no warnings. 4. Bindings in dtschema, not in text. Best regards, Krzysztof Best regards, Krzysztof
On 03/02/2022 15:29, Rob Herring wrote: > On Wed, Feb 2, 2022 at 10:55 AM <nick.hawkins@hpe.com> wrote: >> >> From: Nick Hawkins <nick.hawkins@hpe.com> >> (...) >> + >> + vuart_a: vuart_a@80fd0200 { > > serial@... Maybe it does not look like, but this is actually a v2. Nick was asked to change the naming for the nodes already in v1. Unfortunately it did not happen, so we have vuart, spifi, vic and more. It is a waste of reviewers' time to ask them to perform the same review twice or to ignore their comments. > >> + compatible = "hpe,gxp-vuart"; >> + reg = <0x80fd0200 0x100>; >> + interrupts = <2>; >> + interrupt-parent = <&vic1>; >> + clock-frequency = <1846153>; >> + reg-shift = <0>; >> + status = "okay"; >> + serial-line = <3>; >> + vuart_cfg = <&vuart_a_cfg>; >> + }; (...) >> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml >> index 294093d45a23..913f722a6b8d 100644 >> --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml >> +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml >> @@ -514,7 +514,9 @@ patternProperties: >> "^hoperun,.*": >> description: Jiangsu HopeRun Software Co., Ltd. >> "^hp,.*": >> - description: Hewlett Packard >> + description: Hewlett Packard Inc. > > Why are you changing this one? I guess this is squashing of my patch: https://lore.kernel.org/all/20220127075229.10299-1-krzysztof.kozlowski@canonical.com/ which is fine to me, but vendor changve should be a separate commit with its own explanation. Now it looks indeed weird. > >> + "^hpe,.*": > > You used HPE elsewhere... Lowercase is preferred. Best regards, Krzysztof
> Maybe it does not look like, but this is actually a v2. Nick was asked > to change the naming for the nodes already in v1. Unfortunately it did > not happen, so we have vuart, spifi, vic and more. > It is a waste of reviewers' time to ask them to perform the same review > twice or to ignore their comments. Hi Krysztof, Accept our apologies if you think you lose your time, it is clearly not our intent. This is the first time that we (I mean the team) introduce a new arch into the linux kernel and I must admit that we had hard time to understand from which angle we needed to start. I will probably write a Documentation afterward, as it is easy to find doc on how to introduce a patch or a driver, but not when you want to introduce a new chip. We are trying to do our best, and clearly want to follow all of your inputs. Mistakes happen and they are clearly not intentional and not driven in a way to make you lose your time. Helping others, and teaching something new is definitely a way to optimize your time and this is what you are currently doing with us. We appreciate it and hope you will too. vejmarie > Best regards, > Krzysztof
On 03/02/2022 18:07, Verdun, Jean-Marie wrote: > > > Maybe it does not look like, but this is actually a v2. Nick was asked > > to change the naming for the nodes already in v1. Unfortunately it did > > not happen, so we have vuart, spifi, vic and more. > > > It is a waste of reviewers' time to ask them to perform the same review > > twice or to ignore their comments. > > Hi Krysztof, > > Accept our apologies if you think you lose your time, it is clearly not our > intent. > > This is the first time that we (I mean the team) introduce a new arch into > the linux kernel and I must admit that we had hard time to understand > from which angle we needed to start. > > I will probably write a Documentation afterward, as it is easy to find doc > on how to introduce a patch or a driver, but not when you want to > introduce a new chip. > > We are trying to do our best, and clearly want to follow all of your inputs. > Mistakes happen and they are clearly not intentional and not driven in > a way to make you lose your time. > > Helping others, and teaching something new is definitely a way to > optimize your time and this is what you are currently doing with us. > > We appreciate it and hope you will too. I understand, I also maybe over-reacted on this. Just please go through the comments you got for first submission and either apply them or respond why you disagree. The next submissions (patchset split into several commits) should be a v3, preferably with cover letter (git format-patch --cover-letter -v3 ...) where you can document also changes you did to the patchset. It looks for example like this: https://lore.kernel.org/linux-samsung-soc/31da451b-a36c-74fb-5667-d4193284c6cd@canonical.com/T/#mf98d2ac27a8481dc69dd110f9861c8318cade252 or like this (where changelogs are in each patch, although ordering is not correct because dt-bindings should be the first in the series): https://lore.kernel.org/all/20220103233948.198119-1-Mr.Bossman075@gmail.com/ Best regards, Krzysztof
Hi, On Wed, Feb 02, 2022 at 10:52:50AM -0600, nick.hawkins@hpe.com wrote: > diff --git a/arch/arm/mach-hpe/Makefile b/arch/arm/mach-hpe/Makefile > new file mode 100644 > index 000000000000..8b0a91234df4 > --- /dev/null > +++ b/arch/arm/mach-hpe/Makefile > @@ -0,0 +1 @@ > +obj-$(CONFIG_ARCH_HPE_GXP) += gxp.o > diff --git a/arch/arm/mach-hpe/gxp.c b/arch/arm/mach-hpe/gxp.c > new file mode 100644 > index 000000000000..a37838247948 > --- /dev/null > +++ b/arch/arm/mach-hpe/gxp.c > @@ -0,0 +1,62 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (C) 2022 Hewlett-Packard Enterprise Development Company, L.P. > + * > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + */ > + > + > +#include <linux/init.h> > +#include <asm/mach/arch.h> > +#include <asm/mach/map.h> > +#include <linux/of.h> > +#include <linux/of_platform.h> > +#include <linux/clk-provider.h> > +#include <linux/clocksource.h> It's normal to list all linux/ includes before asm/ includes. Please rearrange. > + > +#define IOP_REGS_PHYS_BASE 0xc0000000 > +#define IOP_REGS_VIRT_BASE 0xf0000000 > +#define IOP_REGS_SIZE (240*SZ_1M) > + > +#define IOP_EHCI_USBCMD 0x0efe0010 > + > +static struct map_desc gxp_io_desc[] __initdata = { > + { > + .virtual = (unsigned long)IOP_REGS_VIRT_BASE, > + .pfn = __phys_to_pfn(IOP_REGS_PHYS_BASE), > + .length = IOP_REGS_SIZE, > + .type = MT_DEVICE, If you keep this, please indent the above four lines by one more tab. > + }, > +}; > + > +void __init gxp_map_io(void) > +{ > + iotable_init(gxp_io_desc, ARRAY_SIZE(gxp_io_desc)); > +} > + > +static void __init gxp_dt_init(void) > +{ > + /*reset EHCI host controller for clear start*/ > + __raw_writel(0x00080002, > + (void __iomem *)(IOP_REGS_VIRT_BASE + IOP_EHCI_USBCMD)); Please consider making IOP_REGS_VIRT_BASE a 'void __iomem' pointer, it being a _virtual_ iomem address. This should save you needing repeated casts except for the initialiser above. > + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); > +} > + > +static void gxp_restart(enum reboot_mode mode, const char *cmd) > +{ > + __raw_writel(1, (void __iomem *) IOP_REGS_VIRT_BASE); > +} > + > +static const char * const gxp_board_dt_compat[] = { > + "HPE,GXP", > + NULL, > +}; > + > +DT_MACHINE_START(GXP_DT, "HPE GXP") > + .init_machine = gxp_dt_init, > + .map_io = gxp_map_io, > + .restart = gxp_restart, > + .dt_compat = gxp_board_dt_compat, > +MACHINE_END > diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig > index cfb8ea0df3b1..5916dade7608 100644 > --- a/drivers/clocksource/Kconfig > +++ b/drivers/clocksource/Kconfig > @@ -617,6 +617,14 @@ config CLKSRC_ST_LPC > Enable this option to use the Low Power controller timer > as clocksource. > > +config GXP_TIMER > + bool "GXP timer driver" > + depends on ARCH_HPE > + default y > + help > + Provides a driver for the timer control found on HPE > + GXP SOCs. This is required for all GXP SOCs. > + > config ATCPIT100_TIMER > bool "ATCPIT100 timer driver" > depends on NDS32 || COMPILE_TEST > diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile > index fa5f624eadb6..ffca09ec34de 100644 > --- a/drivers/clocksource/Makefile > +++ b/drivers/clocksource/Makefile > @@ -89,3 +89,4 @@ obj-$(CONFIG_GX6605S_TIMER) += timer-gx6605s.o > obj-$(CONFIG_HYPERV_TIMER) += hyperv_timer.o > obj-$(CONFIG_MICROCHIP_PIT64B) += timer-microchip-pit64b.o > obj-$(CONFIG_MSC313E_TIMER) += timer-msc313e.o > +obj-$(CONFIG_GXP_TIMER) += gxp_timer.o > diff --git a/drivers/clocksource/gxp_timer.c b/drivers/clocksource/gxp_timer.c > new file mode 100644 > index 000000000000..e3c617036e0d > --- /dev/null > +++ b/drivers/clocksource/gxp_timer.c > @@ -0,0 +1,158 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (C) 2022 Hewlett-Packard Enterprise Development Company, L.P. > + * > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + */ > + > +#include <linux/bitops.h> > +#include <linux/clockchips.h> > +#include <linux/clocksource.h> > +#include <linux/interrupt.h> > +#include <linux/irqreturn.h> > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include <linux/of_address.h> > +#include <linux/of_irq.h> > +#include <linux/of_platform.h> > +#include <linux/slab.h> > +#include <linux/string.h> > +#include <linux/sched_clock.h> > + > +#include <asm/irq.h> Why do you need asm/irq.h ? > + > +#define TIMER0_FREQ 1000000 > +#define TIMER1_FREQ 1000000 > + > +#define MASK_TCS_ENABLE 0x01 > +#define MASK_TCS_PERIOD 0x02 > +#define MASK_TCS_RELOAD 0x04 > +#define MASK_TCS_TC 0x80 > + > +struct gxp_timer { > + void __iomem *counter; > + void __iomem *control; > + struct clock_event_device evt; > +}; > + > +static void __iomem *system_clock __read_mostly; > + > +static u64 notrace gxp_sched_read(void) > +{ > + return readl_relaxed(system_clock); > +} > + > +static int gxp_time_set_next_event(unsigned long event, > + struct clock_event_device *evt_dev) > +{ > + struct gxp_timer *timer = container_of(evt_dev, struct gxp_timer, evt); > + /*clear TC by write 1 and disable timer int and counting*/ > + writeb_relaxed(MASK_TCS_TC, timer->control); > + /*update counter value*/ > + writel_relaxed(event, timer->counter); > + /*enable timer counting and int*/ > + writeb_relaxed(MASK_TCS_TC|MASK_TCS_ENABLE, timer->control); Spaces around the | please. checkpatch probably should've noticed that. > + > + return 0; > +} > + > +static irqreturn_t gxp_time_interrupt(int irq, void *dev_id) > +{ > + struct gxp_timer *timer = dev_id; > + void (*event_handler)(struct clock_event_device *timer); > + > + One too many blank lines. > + if (readb_relaxed(timer->control) & MASK_TCS_TC) { > + writeb_relaxed(MASK_TCS_TC, timer->control); > + > + event_handler = READ_ONCE(timer->evt.event_handler); > + if (event_handler) > + event_handler(&timer->evt); > + return IRQ_HANDLED; > + } else { > + return IRQ_NONE; > + } > +} > + > +static int __init gxp_timer_init(struct device_node *node) > +{ > + void __iomem *base_counter; > + void __iomem *base_control; > + u32 freq; > + int ret, irq; > + struct gxp_timer *gxp_timer; > + > + base_counter = of_iomap(node, 0); > + if (!base_counter) { > + pr_err("Can't remap counter registers"); > + return -ENXIO; > + } > + > + base_control = of_iomap(node, 1); > + if (!base_control) { > + pr_err("Can't remap control registers"); iounmap base_counter? > + return -ENXIO; > + } > + > + system_clock = of_iomap(node, 2); > + if (!system_clock) { > + pr_err("Can't remap control registers"); iounmap base_counter and base_control? > + return -ENXIO; > + } > + > + if (of_property_read_u32(node, "clock-frequency", &freq)) { > + pr_err("Can't read clock-frequency\n"); > + goto err_iounmap; > + } > + > + sched_clock_register(gxp_sched_read, 32, freq); > + clocksource_mmio_init(system_clock, node->name, freq, > + 300, 32, clocksource_mmio_readl_up); We normally align continutation lines in function arguments to the opening ( thusly: clocksource_mmio_init(system_clock, node->name, freq, 300, 32, clocksource_mmio_readl_up); > + > + irq = irq_of_parse_and_map(node, 0); > + if (irq <= 0) { > + ret = -EINVAL; > + pr_err("GXP Timer Can't parse IRQ %d", irq); > + goto err_iounmap; > + } > + > + gxp_timer = kzalloc(sizeof(*gxp_timer), GFP_KERNEL); > + if (!gxp_timer) { > + ret = -ENOMEM; > + goto err_iounmap; > + } > + > + gxp_timer->counter = base_counter; > + gxp_timer->control = base_control; > + gxp_timer->evt.name = node->name; > + gxp_timer->evt.rating = 300; > + gxp_timer->evt.features = CLOCK_EVT_FEAT_ONESHOT; > + gxp_timer->evt.set_next_event = gxp_time_set_next_event; > + gxp_timer->evt.cpumask = cpumask_of(0); > + > + if (request_irq(irq, gxp_time_interrupt, IRQF_TIMER | IRQF_SHARED, > + node->name, gxp_timer)) { Again: if (request_irq(irq, gxp_time_interrupt, IRQF_TIMER | IRQF_SHARED, node->name, gxp_timer)) { > + pr_err("%s: request_irq() failed\n", "GXP Timer Tick"); Consider storing the error code from request_irq() and printing it here. So: err = request_irq(...); if (err) { pr_err("%s: request_irq() failed: %pe\n", "GXP Timer Tick", ERR_PTR(err)); > + goto err_timer_free; > + } > + > + clockevents_config_and_register(&gxp_timer->evt, TIMER0_FREQ, > + 0xf, 0xffffffff); > + > + pr_info("gxp: system timer (irq = %d)\n", irq); > + return 0; > + > + > +err_timer_free: > + kfree(gxp_timer); > + > +err_iounmap: > + iounmap(system_clock); > + iounmap(base_control); > + iounmap(base_counter); > + return ret; > +} > + > +TIMER_OF_DECLARE(gxp, "hpe,gxp-timer", gxp_timer_init); Thanks.
On Fri, 2022-02-04 at 12:05 +0000, Russell King (Oracle) wrote: > On Wed, Feb 02, 2022 at 10:52:50AM -0600, nick.hawkins@hpe.com wrote: [] > > diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile [] > > +static irqreturn_t gxp_time_interrupt(int irq, void *dev_id) > > +{ > > + struct gxp_timer *timer = dev_id; > > + void (*event_handler)(struct clock_event_device *timer); > > + > > + > > One too many blank lines. > > > + if (readb_relaxed(timer->control) & MASK_TCS_TC) { > > + writeb_relaxed(MASK_TCS_TC, timer->control); > > + > > + event_handler = READ_ONCE(timer->evt.event_handler); > > + if (event_handler) > > + event_handler(&timer->evt); > > + return IRQ_HANDLED; > > + } else { > > + return IRQ_NONE; > > + } > > +} It's also less indented code and perhaps clearer to reverse the test if (!readb_relaxed(timer->control) & MASK_TCS_TC) return IRQ_NONE; writeb_relaxed(MASK_TCS_TC, timer->control); event_handler = READ_ONCE(timer->evt.event_handler); if (event_handler) event_handler(&timer->evt); return IRQ_HANDLED;
On Fri, Feb 04, 2022 at 04:18:24AM -0800, Joe Perches wrote: > On Fri, 2022-02-04 at 12:05 +0000, Russell King (Oracle) wrote: > > On Wed, Feb 02, 2022 at 10:52:50AM -0600, nick.hawkins@hpe.com wrote: > > > + if (readb_relaxed(timer->control) & MASK_TCS_TC) { > > > + writeb_relaxed(MASK_TCS_TC, timer->control); > > > + > > > + event_handler = READ_ONCE(timer->evt.event_handler); > > > + if (event_handler) > > > + event_handler(&timer->evt); > > > + return IRQ_HANDLED; > > > + } else { > > > + return IRQ_NONE; > > > + } > > > +} > > It's also less indented code and perhaps clearer to reverse the test > > if (!readb_relaxed(timer->control) & MASK_TCS_TC) This will need to be: if (!(readb_relaxed(timer->control) & MASK_TCS_TC)) > return IRQ_NONE; > > writeb_relaxed(MASK_TCS_TC, timer->control); > > event_handler = READ_ONCE(timer->evt.event_handler); > if (event_handler) > event_handler(&timer->evt); > > return IRQ_HANDLED; > > >
> > +#include <linux/init.h> > > +#include <asm/mach/arch.h> > > +#include <asm/mach/map.h> > > +#include <linux/of.h> > > +#include <linux/of_platform.h> > > +#include <linux/clk-provider.h> > > +#include <linux/clocksource.h> > > It's normal to list all linux/ includes before asm/ includes. Please > rearrange. Hi Nick Since you are new to the kernel, please let me point out, you should consider Russell comments for all your code, not just this one file. Many of the comments are generic to code anywhere in the kernel. So it would be good to fix the same issues in the rest of your code base before submitting them. I would also suggest that when you start submitting drivers, submit just one or two to start with. You will learn a lot from the feedback you get, and you can apply what you have learnt to the rest of your code before you post them for review. I would also suggest you spend 30 minutes a day just reading comments other patches receive. You can also learn a lot that way, see if the comments apply to your own code. You will also learn about processes this way, which can be just as challenging to get right as code. Andrew
On Fri, 2022-02-04 at 12:31 +0000, Russell King (Oracle) wrote: > On Fri, Feb 04, 2022 at 04:18:24AM -0800, Joe Perches wrote: > > On Fri, 2022-02-04 at 12:05 +0000, Russell King (Oracle) wrote: > > > On Wed, Feb 02, 2022 at 10:52:50AM -0600, nick.hawkins@hpe.com wrote: > > > > + if (readb_relaxed(timer->control) & MASK_TCS_TC) { > > > > + writeb_relaxed(MASK_TCS_TC, timer->control); > > > > + > > > > + event_handler = READ_ONCE(timer->evt.event_handler); > > > > + if (event_handler) > > > > + event_handler(&timer->evt); > > > > + return IRQ_HANDLED; > > > > + } else { > > > > + return IRQ_NONE; > > > > + } > > > > +} > > > > It's also less indented code and perhaps clearer to reverse the test > > > > if (!readb_relaxed(timer->control) & MASK_TCS_TC) > > This will need to be: > > if (!(readb_relaxed(timer->control) & MASK_TCS_TC)) right, thanks.
diff --git a/Documentation/devicetree/bindings/display/hpe,gxp-thumbnail.txt b/Documentation/devicetree/bindings/display/hpe,gxp-thumbnail.txt new file mode 100644 index 000000000000..e6d37ecce72b --- /dev/null +++ b/Documentation/devicetree/bindings/display/hpe,gxp-thumbnail.txt @@ -0,0 +1,21 @@ +* GXP HPE VIDEO THUMBNAIL DRIVER + +Required properties: +- compatible: Must be "hpe,gxp-thumbnail". +- reg : Physical base address and length of the controller's registers. +- clocks : phandle + clock specifier pair of the FB reference clock. +- bits-per-pixel: Bits per pixel, must be 32. +- width: Width in pixels, must be 800. +- height: Height in pixels, must be 600. + +Optional properties: +- lcd-supply: Regulator for LCD supply voltage. + +Example: + thumbnail: thumbnail@c0000500 { + compatible = "hpe,gxp-thumbnail"; + reg = <0xc0000500 0x20>; + bits-per-pixel = <32>; + width = <800>; + height = <600>; + }; diff --git a/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.txt b/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.txt new file mode 100644 index 000000000000..568d26d785d2 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/hpe,gxp-gpio.txt @@ -0,0 +1,16 @@ +*HPE GXP GPIO INTERFACE + +Required properties: +- compatible: Must be "hpe,gxp-gpio". +- #gpio-cells: The number of cells to describe a GPIO, this should be 2. +- csm: Phandle to the GXP PCI CSM Controller. +- vuch0_handle: Phandle to the Virtual USB Hub Controller (VUHC). + +Example of gpio-controller nodes for a MPC8347 SoC: + + gpio: gpio { + compatible = "hpe,gxp-gpio"; + #gpio-cells = <2>; + csm_handle = <&csm>; + vuhc0_handle = <&vuhc0>; + }; diff --git a/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.txt b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.txt new file mode 100644 index 000000000000..cdca203f8c3b --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.txt @@ -0,0 +1,19 @@ +* HPE GXP I2C Interface + +Required Properties: + + - compatible: Must be "hpe,gxp-i2c" + - reg: The I2C address of the device. + - interrupts: The interrupt number. + - interrupt-parent: Interrupt controller to which the I2C bus is reporting + - i2cg-handle: I2C Global interrupt status register handler + +Example: + + i2c0: i2c@c0002000 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002000 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + }; diff --git a/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc-cfg.txt b/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc-cfg.txt new file mode 100644 index 000000000000..20deef7a6be2 --- /dev/null +++ b/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc-cfg.txt @@ -0,0 +1,13 @@ +* HPE GXP KCS IPMI DRIVER + +Required properties: +- compatible : Must contain "hpe,gxp-kcs-bmc-cfg", "simple-mfd", "syscon". +- reg : Specifies base physical address and size of the configuration registers. + +Example: + + kcs_conf: kcs_conf@80fc0430 { + compatible = "hpe,gxp-kcs-bmc-cfg", "simple-mfd", "syscon"; + reg = <0x80fc0430 0x100>; + }; + diff --git a/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc.txt b/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc.txt new file mode 100644 index 000000000000..137411243f3f --- /dev/null +++ b/Documentation/devicetree/bindings/ipmi/hpegxp-kcs-bmc.txt @@ -0,0 +1,21 @@ +* HPE GXP KCS IPMI DRIVER + +Required properties: +- compatible : Must contain "hpe,gxp-kcs-bmc". +- interrupts : The interrupt number. +- reg : Specifies base physical address and size of the control registers. +- kcs_chan : The KCS channel number in the controller. +- status: The status signal from the controller. +- kcs-bmc-cfg = Phandle to the KCS Configuration registers. + +Example: + + kcs_reg: kcs_reg@80fd0400 { + compatible = "hpe,gxp-kcs-bmc"; + reg = <0x80fd0400 0x8>; + interrupts = <6>; + interrupt-parent = <&vic1>; + kcs_chan = <1>; + status = "okay"; + kcs-bmc-cfg = <&kcs_conf>; + }; diff --git a/Documentation/devicetree/bindings/memory-controllers/hpe,gxp-srom.txt b/Documentation/devicetree/bindings/memory-controllers/hpe,gxp-srom.txt new file mode 100644 index 000000000000..027cb6fbc93c --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/hpe,gxp-srom.txt @@ -0,0 +1,13 @@ +* HPE GXP SROM CONTROLLER + +Required properties: + +- compatible: Must be one of "hpe,gxp-srom", "simple-mfd", "syscon". +- reg: Specifies base physical address and size of the control registers. + +Example: + + srom@80fc0000 { + compatible = "hpe,gxp-srom", "simple-mfd", "syscon"; + reg = <0x80fc0000 0x100>; + }; diff --git a/Documentation/devicetree/bindings/mtd/hpe,gxp.txt b/Documentation/devicetree/bindings/mtd/hpe,gxp.txt new file mode 100644 index 000000000000..8c6f54af0260 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/hpe,gxp.txt @@ -0,0 +1,16 @@ + +* HPE GXP BMC + +HPE GXP SoC definition + +Required properties: + - compatible : Must contain: "HPE,GXP" + +Example: +/ { + model = "Hewlett Packard Enterprise GXP BMC"; + compatible = "HPE,GXP"; + #address-cells = <1>; + #size-cells = <1>; + +} diff --git a/Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.txt b/Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.txt new file mode 100644 index 000000000000..fa48ecb22c92 --- /dev/null +++ b/Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.txt @@ -0,0 +1,21 @@ +* HPE GXP UMAC MDIO Interface Controller + +Required properties: +- compatible: Must contain "hpe,gxp-umac-mdio". +- reg: Specifies base physical address and size of the registers. +- interrupts: The interrupt number. +- Cells which are configuring the external phy interfaces. Numbered through relative addressing each phy is compatible with a standard ethernet-phy-ieee802.3 phy. + +Example: + + mdio0: mdio@c0004080 { + compatible = "hpe,gxp-umac-mdio"; + reg = <0xc0004080 0x10>; + #address-cells = <1>; + #size-cells = <0>; + ext_phy0: ethernt-phy@0 { + compatible = "ethernet-phy-ieee802.3-c22"; + phy-mode = "sgmii"; + reg = <0>; + }; + }; diff --git a/Documentation/devicetree/bindings/net/hpe,gxp-umac.txt b/Documentation/devicetree/bindings/net/hpe,gxp-umac.txt new file mode 100644 index 000000000000..3a620b4ad999 --- /dev/null +++ b/Documentation/devicetree/bindings/net/hpe,gxp-umac.txt @@ -0,0 +1,20 @@ +* HPE GXP UMAC Controller + +Required properties: +- compatible: Must contain "hpe,gxp-umac". +- reg: Specifies base physical address and size of the registers. +- interrupts: The interrupt number. +- interrupt-parent: specify main interrupt controller handler +- phy-handle: Phandle to a PHY on the MDIO bus. +- int-phy-handle: Phandle to PHY interrupt handler. + +Example: + + umac0: umac@c0004000 { + compatible = "hpe,gxp-umac"; + reg = <0xc0004000 0x80>; + interrupts = <10>; + interrupt-parent = <&vic0>; + phy-handle = <&ext_phy0>; + int-phy-handle = <&int_phy0>; + }; diff --git a/Documentation/devicetree/bindings/pwm/hpe,gxp-fan.txt b/Documentation/devicetree/bindings/pwm/hpe,gxp-fan.txt new file mode 100644 index 000000000000..21446b7cafd9 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/hpe,gxp-fan.txt @@ -0,0 +1,15 @@ +* HPE GXP Fan Controller + +Required properties: +- compatible: Must contain "hpe,gxp-fan-ctrl". +- reg: Physical base address and length of the controller's registers. +- xreg_handle: Phandle to the xregister controller for fan control. +- fn2_handle: Phandle to the FN2 interface. + +Example: + fanctrl: fanctrl@c1000c00 { + compatible = "hpe,gxp-fan-ctrl"; + reg = <0xc1000c00 0x200>; + xreg_handle = <&xreg>; + fn2_handle = <&fn2>; + }; diff --git a/Documentation/devicetree/bindings/serial/hpe,gxp-vuart-cfg.txt b/Documentation/devicetree/bindings/serial/hpe,gxp-vuart-cfg.txt new file mode 100644 index 000000000000..8bad8c39d044 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/hpe,gxp-vuart-cfg.txt @@ -0,0 +1,17 @@ +*HPE Virtual UART Controller CONFIGURATION + +This controller is used to forward host serial to BMC chip + +Required properties: + +- compatible : Must contain "hpe,gxp-vuarta_cfg", "simple-mfd", "syscon". +- reg : Specifies base physical address and size of the configuration register. +- reg-io-width: io register width in bytes, must be 1. + +Example: + + vuart_a_cfg: vuarta_cfg@80fc0230 { + compatible = "hpe,gxp-vuarta_cfg", "simple-mfd", "syscon"; + reg = <0x80fc0230 0x100>; + reg-io-width = <1>; + }; diff --git a/Documentation/devicetree/bindings/serial/hpe,gxp-vuart.txt b/Documentation/devicetree/bindings/serial/hpe,gxp-vuart.txt new file mode 100644 index 000000000000..9c5cc14d9474 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/hpe,gxp-vuart.txt @@ -0,0 +1,23 @@ +*HPE VUART Controller port + +Required properties: + +- compatible : Must contain "hpe,gxp-vuart". +- reg : Specifies base physical address and size of the registers. +- interrupts : The interrupt number. +- clock-frequency: The frequency of the clock input to the UART in Hz. +- status: The status signal from the controller. + +Example: + + vuart_a: vuart_a@80fd0200 { + compatible = "hpe,gxp-vuart"; + reg = <0x80fd0200 0x100>; + interrupts = <2>; + interrupt-parent = <&vic1>; + clock-frequency = <1846153>; + reg-shift = <0>; + status = "okay"; + serial-line = <3>; + vuart_cfg = <&vuart_a_cfg>; + }; diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-chif.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-chif.txt new file mode 100644 index 000000000000..9d5a8763ca22 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-chif.txt @@ -0,0 +1,16 @@ +* HPE GXP CHIF INTERFACE + +Define the basic CHannel InterFace (CHIF) communication path between BMC and Host through PCI. +Interrupts are handled through PCI function 2 + +Required parent device properties: +- compatible : Should be "hpe,gxp-chif". +- interrupts : The interrupt number. + +Example: + + chif { + compatible = "hpe,gxp-chif"; + interrupts = <12>; + }; + }; diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-csm.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-csm.txt new file mode 100644 index 000000000000..8d28fd1ec46a --- /dev/null +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-csm.txt @@ -0,0 +1,14 @@ +* HPE GXP PCI CSM INTERFACE + +Required parent device properties: +- compatible : Should be "hpe,gxp-csm", "simple-mfd", "syscon". +- reg : Specifies base physical address and size of control registers. + +Example: + + csm: csm@8000005c { + compatible = "hpe,gxp-csm", "simple-mfd", "syscon"; + reg = <0x8000005c 0x2>, <0x800000de 0x1>, <0x800000e7 0x1>; + }; + + diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-dbg.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-dbg.txt new file mode 100644 index 000000000000..39e3ed68a34d --- /dev/null +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-dbg.txt @@ -0,0 +1,18 @@ +* HPE GXP DBG INTERFACE + +Specify host debug interface. Used presently to report ROM POST code during host initialization phases + +Required parent device properties: +- compatible : Should be "hpe,gxp-dbg". +- reg : Specifies base physical address and size of the control/data registers. +- interrupts: The interrupt number. +- interrupt-parent: The interrupt controller to which the interface is wired to + +Example: + + post@800000a0 { + compatible = "hpe,gxp-dbg"; + reg = <0x800000a0 0x20>; + interrupts = <10>; + interrupt-parent = <&vic1>; + }; diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-fn2.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-fn2.txt new file mode 100644 index 000000000000..eb8328f59eda --- /dev/null +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-fn2.txt @@ -0,0 +1,20 @@ +* HPE GXP PCI FN2 INTERFACE CONTROLLER + +Required parent device properties: +- compatible : Should be "hpe,gxp-fn2", "simple-mfd", "syscon". +- reg : Specifies base physical address and size of the control/data/memory mapped registers. +- xreg_handle : Phandle to the xregister controller interface. +- #gpio-cells : The number of cells to describe a GPIO, this should be 2. +- interrupts : interrupt number to which PCI FN2 is connected to +- interrupt-parets : interrupt controller to which PCI FN2 is connected to + +Example: + + fn2: fn2@80200000 { + compatible = "hpe,gxp-fn2", "simple-mfd", "syscon"; + reg = <0x80200000 0x100000>; + xreg_handle = <&xreg>; + interrupts = <0>; + interrupt-parent = <&vic1>; + #gpio-cells = <2>; + }; diff --git a/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-xreg.txt b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-xreg.txt new file mode 100644 index 000000000000..3ec86a478302 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/hpe/hpe,gxp-xreg.txt @@ -0,0 +1,19 @@ +* HPE GXP XREG INTERFACE + +Required parent device properties: +- compatible : Should be "hpe,gxp-fn2", "simple-mfd", "syscon". +- reg : Specifies base physical address and size of the control registers. +- interrupts: The interrupt number. +- interrupt-parent: main interrupt controller to which xreg is connected to +- #gpio-cells : The number of cells to describe a GPIO, this should be 2. + +Example: + + xreg: xreg@d1000300 { + compatible = "hpe,gxp-xreg", "simple-mfd", "syscon"; + reg = <0xd1000300 0xFF>; + interrupts = <26>; + interrupt-parent = <&vic0>; + #gpio-cells = <2>; + }; + diff --git a/Documentation/devicetree/bindings/spi/hpe,gxp-spifi.txt b/Documentation/devicetree/bindings/spi/hpe,gxp-spifi.txt new file mode 100644 index 000000000000..78eac0ac82f4 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/hpe,gxp-spifi.txt @@ -0,0 +1,76 @@ +* HPE GXP SPI FLASH INTERFACE + +Required properties: + - compatible : Must contain: "hpe,gxp-spifi" + - reg : the first contains the control register location and length, + the second contains the memory window mapping address and length, + the third contains the configuration register location and length + - interrupts: The interrupt number. + - #address-cells : must be 1 corresponding to chip select child binding + - #size-cells : must be 0 corresponding to chip select child binding + +The child nodes are the SPI flash modules which must have a compatible +property as specified in bindings/mtd/jedec,spi-nor.txt + +Example: + spifi0: spifi@c0000200 { + compatible = "hpe,gxp-spifi"; + reg = <0xc0000200 0x80>, <0xc000c000 0x100>, <0xf8000000 0x8000000>; + interrupts = <20>; + interrupt-parent = <&vic0>; + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + compatible = "jedec,spi-nor"; + reg = <0>; + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + u-boot@0 { + label = "u-boot"; + reg = <0x0 0x60000>; + }; + u-boot-env@60000 { + label = "u-boot-env"; + reg = <0x60000 0x20000>; + }; + kernel@80000 { + label = "kernel"; + reg = <0x80000 0x4c0000>; + }; + rofs@540000 { + label = "rofs"; + reg = <0x540000 0x1740000>; + }; + rwfs@1c80000 { + label = "rwfs"; + reg = <0x1c80000 0x250000>; + }; + section@1edf000{ + label = "section"; + reg = <0x1ed0000 0x130000>; + }; + }; + }; + + flash@1 { + compatible = "jedec,spi-nor"; + reg = <1>; + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + host-prime@0 { + label = "host-prime"; + reg = <0x0 0x02000000>; + }; + host-second@2000000 { + label = "host-second"; + reg = <0x02000000 0x02000000>; + }; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/thermal/hpe,gxp-coretemp.txt b/Documentation/devicetree/bindings/thermal/hpe,gxp-coretemp.txt new file mode 100644 index 000000000000..bc83db03166a --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/hpe,gxp-coretemp.txt @@ -0,0 +1,14 @@ +* HPE GXP CORETEMP INTERFACE + +Required parent device properties: +- compatible : Should be "hpe,gxp-coretemp". +- reg : Specifies base physical address and size of the control register. + +Example: + + coretemp: coretemp@c0000130 { + compatible = "hpe,gxp-coretemp"; + reg = <0xc0000130 0x8>; + }; + + diff --git a/Documentation/devicetree/bindings/timer/hpe,gxp-timer.txt b/Documentation/devicetree/bindings/timer/hpe,gxp-timer.txt new file mode 100644 index 000000000000..3e491b8ea740 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/hpe,gxp-timer.txt @@ -0,0 +1,18 @@ +*HPE GXP TIMER + +Required properties: + +- compatible : Must be "hpe,gxp-timer" +- reg : The GXP Timer Control Registers (Addresses + size) tuples list. +- interrupts : The interrupt number. +- clock-frequency : The frequency of the clock that drives the counter, in Hz. + +Example: + + timer0: timer@c0000080 { + compatible = "hpe,gxp-timer"; + reg = <0xc0000080 0x1>, <0xc0000094 0x01>, <0xc0000088 0x08>; + interrupts = <0>; + interrupt-parent = <&vic0>; + clock-frequency = <400000000>; + }; diff --git a/Documentation/devicetree/bindings/usb/hpe,gxp-udc.txt b/Documentation/devicetree/bindings/usb/hpe,gxp-udc.txt new file mode 100644 index 000000000000..ed764d64a169 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/hpe,gxp-udc.txt @@ -0,0 +1,21 @@ +* HPE USB Device Port Controller + +Required properties: +- compatible: Must be "hpe,gxp-udc". +- reg: Specifies base physical address and size of the registers. +- interrupts: The interrupt number. +- vdevnum: The particular usb device controller port. +- fepnum: The particular usb device controller options. +- udcg-handle: The usb device controller hub. + +Example: + + udc0: udc@80401000 { + compatible = "hpe,gxp-udc"; + reg = <0x80401000 0x1000>; + interrupts = <13>; + interrupt-parent = <&vic1>; + vdevnum = <0>; + fepnum = <7>; + udcg-handle = <&udcg>; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index 294093d45a23..913f722a6b8d 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -514,7 +514,9 @@ patternProperties: "^hoperun,.*": description: Jiangsu HopeRun Software Co., Ltd. "^hp,.*": - description: Hewlett Packard + description: Hewlett Packard Inc. + "^hpe,.*": + description: Hewlett Packard Enterprise "^hsg,.*": description: HannStar Display Co. "^holtek,.*": diff --git a/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.txt b/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.txt new file mode 100644 index 000000000000..3f17c1a00a5c --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.txt @@ -0,0 +1,11 @@ +* HPE GXP Controlled Watchdog + +Required Properties: +- compatible: Should contain "hpe,gxp-wdt". +- reg: The GXP Watchdog Control Registers (Addresses + size) tuples list. + +Example: + watchdog: watchdog@c0000090 { + compatible = "hpe,gxp-wdt"; + reg = <0xc0000090 0x02>, <0xc0000096 0x01>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index f41088418aae..2a4fcfff0104 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8385,6 +8385,20 @@ L: linux-efi@vger.kernel.org S: Maintained F: block/partitions/efi.* +GXP ARCHITECTURE +M: Jean-Marie Verdun <verdun@hpe.com> +M: Nick Hawkins <nick.hawkins@hpe.com> +S: Maintained +F: arch/arm/boot/dts/gxp.dts +F: arch/arm/configs/gxp_defconfig +F: arch/arm/mach-hpe/gxp.c + +GXP TIMER +M: Jean-Marie Verdun <verdun@hpe.com> +M: Nick Hawkins <nick.hawkins@hpe.com> +S: Maintained +F: drivers/clocksource/gxp_timer.c + H8/300 ARCHITECTURE M: Yoshinori Sato <ysato@users.sourceforge.jp> L: uclinux-h8-devel@lists.sourceforge.jp (moderated for non-subscribers) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 4c97cb40eebb..6998b5b5f59e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -618,6 +618,8 @@ source "arch/arm/mach-highbank/Kconfig" source "arch/arm/mach-hisi/Kconfig" +source "arch/arm/mach-hpe/Kconfig" + source "arch/arm/mach-imx/Kconfig" source "arch/arm/mach-integrator/Kconfig" diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 235ad559acb2..a96b4d5b7f68 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -1549,3 +1549,5 @@ dtb-$(CONFIG_ARCH_ASPEED) += \ aspeed-bmc-vegman-n110.dtb \ aspeed-bmc-vegman-rx20.dtb \ aspeed-bmc-vegman-sx20.dtb +dtb-$(CONFIG_ARCH_HPE_GXP) += \ + hpe-bmc-dl360gen10.dtb diff --git a/arch/arm/boot/dts/hpe-bmc-dl360gen10.dts b/arch/arm/boot/dts/hpe-bmc-dl360gen10.dts new file mode 100644 index 000000000000..278bf2bca2c8 --- /dev/null +++ b/arch/arm/boot/dts/hpe-bmc-dl360gen10.dts @@ -0,0 +1,207 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Device Tree file for HPE DL360Gen10 + */ + +/include/ "hpe-gxp.dtsi" + +/ { + #address-cells = <1>; + #size-cells = <1>; + compatible = "hpe,gxp"; + model = "Hewlett Packard Enterprise ProLiant dl360 Gen10"; + + chosen { + bootargs = "earlyprintk console=ttyS0,115200 user_debug=31"; + }; + + aliases { + ethernet0 = &umac0; + ethernet1 = &umac1; + }; + + memory@40000000 { + device_type = "memory"; + reg = <0x40000000 0x20000000>; + }; + + ahb { + umac0: umac@c0004000 { + mac-address = [94 18 82 16 04 d8]; + }; + + umac1: umac@c0005000 { + mac-address = [94 18 82 16 04 d9]; + }; + + udc0: udc@80401000 { + compatible = "hpe,gxp-udc"; + reg = <0x80401000 0x1000>; + interrupts = <13>; + interrupt-parent = <&vic1>; + vdevnum = <0>; + fepnum = <7>; + udcg-handle = <&udcg>; + }; + + udc1: udc@80402000 { + compatible = "hpe,gxp-udc"; + reg = <0x80402000 0x1000>; + interrupts = <13>; + interrupt-parent = <&vic1>; + vdevnum = <1>; + fepnum = <7>; + udcg-handle = <&udcg>; + }; + + udc2: udc@80403000 { + compatible = "hpe,gxp-udc"; + reg = <0x80403000 0x1000>; + interrupts = <13>; + interrupt-parent = <&vic1>; + vdevnum = <2>; + fepnum = <4>; + udcg-handle = <&udcg>; + }; + + fn2: fn2@80200000 { + gpio-line-names = + "POWER_OUT", "PS_PWROK", "PCIERST", "POST_COMPLETE", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", ""; + }; + + xreg: xreg@d1000300 { + gpio-line-names = + "", "", "", "", "", "", "POWER", "HEARTBEAT", "FAN1_INST", + "FAN2_INST","FAN3_INST", "FAN4_INST", "FAN5_INST", + "FAN6_INST", "FAN7_INST", "FAN8_INST", "FAN9_INST", + "FAN10_INST", "FAN11_INST", "FAN12_INST","FAN13_INST", + "FAN14_INST", "FAN15_INST", "FAN16_INST", "FAN1_FAIL", + "FAN2_FAIL", "FAN3_FAIL", "FAN4_FAIL", "FAN5_FAIL", + "FAN6_FAIL", "FAN7_FAIL", "FAN8_FAIL", "FAN9_FAIL", + "FAN10_FAIL", "FAN11_FAIL", "FAN12_FAIL", "FAN13_FAIL", + "FAN14_FAIL", "FAN15_FAIL", "FAN16_FAIL","", "", "", "", + "", "", "", "", "", "", "", "", "", "", "", "", "IDENTIFY", + "HEALTH_RED", "HEALTH_AMBER", "POWER_BUTTON", "", + "SIO_POWER_GOOD", "NMI_BUTTON", "RESET_BUTTON", "SIO_S5", + "SIO_ONCONTROL", "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", ""; + }; + + i2c2: i2c@c0002200 { + 24c02@50 { + compatible = "atmel,24c02"; + pagesize = <8>; + reg = <0x50>; + }; + }; + }; + + vuhc: vuhc { + compatible = "gpio-keys-polled"; + poll-interval = <100>; + + PortOwner0 { + label = "Port Owner"; + linux,code = <200>; + gpios = <&gpio 250 1>; + }; + + PortOwner1 { + label = "Port Owner"; + linux,code = <201>; + gpios = <&gpio 251 1>; + }; + + PortOwner2 { + label = "Port Owner"; + linux,code = <202>; + gpios = <&gpio 252 1>; + }; + }; + + gpio: gpio { + gpio-line-names = + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "RESET_OUT", "NMI_OUT", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", "", ""; + }; + + xreg_keys: xreg_keys { + compatible = "gpio-keys-polled"; + poll-interval = <100>; + + IdButton { + label = "ID Button"; + linux,code = <200>; + gpios = <&xreg 60 1>; + }; + }; + + leds: leds { + compatible = "gpio-leds"; + + power { + gpios = <&xreg 6 0>; + default-state = "off"; + }; + + heartbeat { + gpios = <&xreg 7 0>; + default-state = "off"; + }; + + identify { + gpios = <&xreg 56 0>; + default-state = "off"; + }; + + health_red { + gpios = <&xreg 57 0>; + default-state = "off"; + }; + + health_amber { + gpios = <&xreg 58 0>; + default-state = "off"; + }; + }; + +}; diff --git a/arch/arm/boot/dts/hpe-gxp.dtsi b/arch/arm/boot/dts/hpe-gxp.dtsi new file mode 100644 index 000000000000..1a16840bb72f --- /dev/null +++ b/arch/arm/boot/dts/hpe-gxp.dtsi @@ -0,0 +1,555 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Device Tree file for HPE GXP + */ + +/dts-v1/; +/ { + model = "Hewlett Packard Enterprise GXP BMC"; + compatible = "hpe,gxp"; + #address-cells = <1>; + #size-cells = <1>; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + compatible = "arm,armv7"; + device_type = "cpu"; + reg = <0>; + }; + }; + + memory@40000000 { + device_type = "memory"; + reg = <0x40000000 0x20000000>; + }; + + ahb { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + device_type = "soc"; + ranges; + + vic0: interrupt-controller@ceff0000 { + compatible = "arm,pl192-vic"; + #address-cells = <1>; + interrupt-controller; + reg = <0xceff0000 0x1000>; + #interrupt-cells = <1>; + }; + + vic1: vic@80f00000 { + compatible = "arm,pl192-vic"; + #address-cells = <1>; + interrupt-controller; + reg = <0x80f00000 0x1000>; + #interrupt-cells = <1>; + }; + + timer0: timer@c0000080 { + compatible = "hpe,gxp-timer"; + reg = <0xc0000080 0x1>, <0xc0000094 0x01>, <0xc0000088 0x08>; + interrupts = <0>; + interrupt-parent = <&vic0>; + clock-frequency = <400000000>; + }; + + watchdog: watchdog@c0000090 { + compatible = "hpe,gxp-wdt"; + reg = <0xc0000090 0x02>, <0xc0000096 0x01>; + }; + + uartc: serial@c00000f0 { + compatible = "ns16550a"; + reg = <0xc00000f0 0x8>; + interrupts = <19>; + interrupt-parent = <&vic0>; + clock-frequency = <1846153>; + reg-shift = <0>; + }; + + uarta: serial@c00000e0 { + compatible = "ns16550a"; + reg = <0xc00000e0 0x8>; + interrupts = <17>; + interrupt-parent = <&vic0>; + clock-frequency = <1846153>; + reg-shift = <0>; + }; + + uartb: serial@c00000e8 { + compatible = "ns16550a"; + reg = <0xc00000e8 0x8>; + interrupts = <18>; + interrupt-parent = <&vic0>; + clock-frequency = <1846153>; + reg-shift = <0>; + }; + + vuart_a_cfg: vuarta_cfg@80fc0230 { + compatible = "hpe,gxp-vuarta_cfg", "simple-mfd", "syscon"; + reg = <0x80fc0230 0x100>; + reg-io-width = <1>; + }; + + vuart_a: vuart_a@80fd0200 { + compatible = "hpe,gxp-vuart"; + reg = <0x80fd0200 0x100>; + interrupts = <2>; + interrupt-parent = <&vic1>; + clock-frequency = <1846153>; + reg-shift = <0>; + status = "okay"; + serial-line = <3>; + vuart_cfg = <&vuart_a_cfg>; + }; + + usb0: ehci@cefe0000 { + compatible = "generic-ehci"; + reg = <0xcefe0000 0x100>; + interrupts = <7>; + interrupt-parent = <&vic0>; + }; + + usb1: ohci@cefe0100 { + compatible = "generic-ohci"; + reg = <0xcefe0100 0x110>; + interrupts = <6>; + interrupt-parent = <&vic0>; + }; + + spifi0: spifi@c0000200 { + compatible = "hpe,gxp-spifi"; + reg = <0xc0000200 0x80>, <0xc000c000 0x100>, <0xf8000000 0x8000000>; + interrupts = <20>; + interrupt-parent = <&vic0>; + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + compatible = "jedec,spi-nor"; + reg = <0>; + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + u-boot@0 { + label = "u-boot"; + reg = <0x0 0x60000>; + }; + u-boot-env@60000 { + label = "u-boot-env"; + reg = <0x60000 0x20000>; + }; + kernel@80000 { + label = "kernel"; + reg = <0x80000 0x4c0000>; + }; + rofs@540000 { + label = "rofs"; + reg = <0x540000 0x1740000>; + }; + rwfs@1c80000 { + label = "rwfs"; + reg = <0x1c80000 0x250000>; + }; + section@1edf000{ + label = "section"; + reg = <0x1ed0000 0x130000>; + }; + }; + }; + + flash@1 { + compatible = "jedec,spi-nor"; + reg = <1>; + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + host-prime@0 { + label = "host-prime"; + reg = <0x0 0x02000000>; + }; + host-second@2000000 { + label = "host-second"; + reg = <0x02000000 0x02000000>; + }; + }; + }; + }; + + sram@d0000000 { + compatible = "mtd-ram"; + reg = <0xd0000000 0x80000>; + bank-width = <1>; + erase-size =<1>; + #address-cells = <1>; + #size-cells = <1>; + partition@0 { + label = "host-reserved"; + reg = <0x0 0x10000>; + }; + partition@10000 { + label = "nvram"; + reg = <0x10000 0x70000>; + }; + }; + + srom@80fc0000 { + compatible = "hpe,gxp-srom", "simple-mfd", "syscon"; + reg = <0x80fc0000 0x100>; + }; + + vrom@58000000 { + compatible = "mtd-ram"; + bank-width = <4>; + reg = <0x58000000 0x4000000>; + #address-cells = <1>; + #size-cells = <1>; + partition@0 { + label = "vrom-prime"; + reg = <0x0 0x2000000>; + }; + partition@2000000 { + label = "vrom-second"; + reg = <0x2000000 0x2000000>; + }; + }; + + i2cg: i2cg@c00000f8 { + compatible = "syscon"; + reg = <0xc00000f8 0x08>; + }; + + i2c0: i2c@c0002000 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002000 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c1: i2c@c0002100 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002100 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c2: i2c@c0002200 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002200 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c3: i2c@c0002300 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002300 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c4: i2c@c0002400 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002400 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c5: i2c@c0002500 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002500 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + }; + + i2c6: i2c@c0002600 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002600 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c7: i2c@c0002700 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002700 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c8: i2c@c0002800 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002800 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c9: i2c@c0002900 { + compatible = "hpe,gxp-i2c"; + reg = <0xc0002900 0x70>; + interrupts = <9>; + interrupt-parent = <&vic0>; + i2cg-handle = <&i2cg>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2cmux@d1000074 { + compatible = "i2c-mux-reg"; + i2c-parent = <&i2c4>; + reg = <0xd1000074 1>; + #address-cells = <1>; + #size-cells = <0>; + + i2c4@1 { + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c4@2 { + reg = <2>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c4@3 { + reg = <3>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c4@4 { + reg = <4>; + #address-cells = <1>; + #size-cells = <0>; + }; + }; + + i2cmux@d1000076 { + compatible = "i2c-mux-reg"; + i2c-parent = <&i2c6>; + reg = <0xd1000076 1>; + #address-cells = <1>; + #size-cells = <0>; + + i2c6@1 { + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c6@2 { + reg = <2>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c6@3 { + reg = <3>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c6@4 { + reg = <4>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c6@5 { + reg = <5>; + #address-cells = <1>; + #size-cells = <0>; + }; + }; + + mdio0: mdio@c0004080 { + compatible = "hpe,gxp-umac-mdio"; + reg = <0xc0004080 0x10>; + #address-cells = <1>; + #size-cells = <0>; + ext_phy0: ethernt-phy@0 { + compatible = "ethernet-phy-ieee802.3-c22"; + phy-mode = "sgmii"; + reg = <0>; + }; + }; + + mdio1: mdio@c0005080 { + compatible = "hpe,gxp-umac-mdio"; + reg = <0xc0005080 0x10>; + #address-cells = <1>; + #size-cells = <0>; + int_phy0: ethernt-phy@0 { + compatible = "ethernet-phy-ieee802.3-c22"; + phy-mode = "gmii"; + reg = <0>; + }; + + int_phy1: ethernt-phy@1 { + compatible = "ethernet-phy-ieee802.3-c22"; + phy-mode = "gmii"; + reg = <1>; + }; + }; + + umac0: umac@c0004000 { + compatible = "hpe,gxp-umac"; + reg = <0xc0004000 0x80>; + interrupts = <10>; + interrupt-parent = <&vic0>; + phy-handle = <&ext_phy0>; + int-phy-handle = <&int_phy0>; + }; + + umac1: umac@c0005000 { + compatible = "hpe,gxp-umac"; + use-ncsi; + reg = <0xc0005000 0x80>; + interrupts = <11>; + interrupt-parent = <&vic0>; + phy-handle = <&int_phy1>; + }; + + kcs_conf: kcs_conf@80fc0430 { + compatible = "hpe,gxp-kcs-bmc-cfg", "simple-mfd", "syscon"; + reg = <0x80fc0430 0x100>; + }; + + kcs_reg: kcs_reg@80fd0400 { + compatible = "hpe,gxp-kcs-bmc"; + reg = <0x80fd0400 0x8>; + interrupts = <6>; + interrupt-parent = <&vic1>; + kcs_chan = <1>; + status = "okay"; + kcs-bmc-cfg = <&kcs_conf>; + }; + + thumbnail: thumbnail@c0000500 { + compatible = "hpe,gxp-thumbnail"; + reg = <0xc0000500 0x20>; + bits-per-pixel = <32>; + width = <800>; + height = <600>; + }; + + fanctrl: fanctrl@c1000c00 { + compatible = "hpe,gxp-fan-ctrl"; + reg = <0xc1000c00 0x200>; + xreg_handle = <&xreg>; + fn2_handle = <&fn2>; + }; + + fn2: fn2@80200000 { + compatible = "hpe,gxp-fn2", "simple-mfd", "syscon"; + reg = <0x80200000 0x100000>; + xreg_handle = <&xreg>; + interrupts = <0>; + interrupt-parent = <&vic1>; + #gpio-cells = <2>; + chif { + compatible = "hpe,gxp-chif"; + interrupts = <12>; + }; + }; + + xreg: xreg@d1000300 { + compatible = "hpe,gxp-xreg", "simple-mfd", "syscon"; + reg = <0xd1000300 0xFF>; + interrupts = <26>; + interrupt-parent = <&vic0>; + #gpio-cells = <2>; + }; + + csm: csm@8000005c { + compatible = "hpe,gxp-csm", "simple-mfd", "syscon"; + reg = <0x8000005c 0x2>, <0x800000de 0x1>, <0x800000e7 0x1>; + }; + + vuhc0: vuhc@80400000 { + compatible = "syscon"; + reg = <0x80400000 0x80>; + }; + + udcg: udcg@80400800 { + compatible = "syscon"; + reg = <0x80400800 0x200>; + }; + + post@800000a0 { + compatible = "hpe,gxp-dbg"; + reg = <0x800000a0 0x20>; + interrupts = <10>; + interrupt-parent = <&vic1>; + }; + + coretemp: coretemp@c0000130 { + compatible = "hpe,gxp-coretemp"; + reg = <0xc0000130 0x8>; + }; + }; + + gpio: gpio { + compatible = "hpe,gxp-gpio"; + #gpio-cells = <2>; + csm_handle = <&csm>; + vuhc0_handle = <&vuhc0>; + }; + + clocks { + osc: osc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-output-names = "osc"; + clock-frequency = <33333333>; + }; + + iopclk: iopclk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clocks = <&osc>; + clock-out-put-names = "iopclk"; + clock-frequency = <400000000>; + }; + + memclk: memclk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clocks = <&osc>; + clock-out-put-names = "memclk"; + clock-frequency = <800000000>; + }; + }; +}; diff --git a/arch/arm/configs/gxp_defconfig b/arch/arm/configs/gxp_defconfig new file mode 100644 index 000000000000..f37c6630e06d --- /dev/null +++ b/arch/arm/configs/gxp_defconfig @@ -0,0 +1,243 @@ +CONFIG_KERNEL_XZ=y +CONFIG_DEFAULT_HOSTNAME="gxp" +CONFIG_SYSVIPC=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_BSD_PROCESS_ACCT=y +CONFIG_BSD_PROCESS_ACCT_V3=y +CONFIG_LOG_BUF_SHIFT=18 +CONFIG_CFS_BANDWIDTH=y +CONFIG_RT_GROUP_SCHED=y +CONFIG_CGROUP_FREEZER=y +CONFIG_CGROUP_DEVICE=y +CONFIG_CGROUP_CPUACCT=y +CONFIG_NAMESPACES=y +CONFIG_SCHED_AUTOGROUP=y +CONFIG_RELAY=y +CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +CONFIG_KALLSYMS_ALL=y +CONFIG_EMBEDDED=y +# CONFIG_COMPAT_BRK is not set +CONFIG_SLAB=y +CONFIG_ARCH_MULTI_V6=y +CONFIG_ARCH_HPE=y +CONFIG_ARCH_HPE_GXP=y +CONFIG_SECCOMP=y +# CONFIG_ATAGS is not set +CONFIG_ZBOOT_ROM_TEXT=0x0 +CONFIG_ZBOOT_ROM_BSS=0x0 +# CONFIG_SUSPEND is not set +CONFIG_JUMP_LABEL=y +# CONFIG_STRICT_KERNEL_RWX is not set +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_KSM=y +CONFIG_CLEANCACHE=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_PACKET_DIAG=y +CONFIG_UNIX=y +CONFIG_UNIX_DIAG=y +CONFIG_XFRM_USER=y +CONFIG_XFRM_STATISTICS=y +CONFIG_INET=y +CONFIG_VLAN_8021Q=y +CONFIG_NETLINK_DIAG=y +CONFIG_NET_NCSI=y +# CONFIG_WIRELESS is not set +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y +# CONFIG_STANDALONE is not set +CONFIG_MTD=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_PHYSMAP=y +CONFIG_MTD_PHYSMAP_OF=y +CONFIG_MTD_PLATRAM=y +CONFIG_MTD_SPI_NOR=y +CONFIG_SPI_GXP_SPIFI=y +CONFIG_BLK_DEV_NULL_BLK=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_NBD=y +CONFIG_BLK_DEV_RAM=y +CONFIG_EEPROM_AT24=y +CONFIG_SCSI=y +CONFIG_BLK_DEV_SD=y +# CONFIG_SCSI_LOWLEVEL is not set +CONFIG_NETDEVICES=y +# CONFIG_NET_VENDOR_ALACRITECH is not set +# CONFIG_NET_VENDOR_AMAZON is not set +# CONFIG_NET_VENDOR_AQUANTIA is not set +# CONFIG_NET_VENDOR_ARC is not set +# CONFIG_NET_VENDOR_AURORA is not set +# CONFIG_NET_VENDOR_BROADCOM is not set +# CONFIG_NET_VENDOR_CADENCE is not set +# CONFIG_NET_VENDOR_CAVIUM is not set +# CONFIG_NET_VENDOR_CIRRUS is not set +# CONFIG_NET_VENDOR_CORTINA is not set +# CONFIG_NET_VENDOR_EZCHIP is not set +# CONFIG_NET_VENDOR_FARADAY is not set +# CONFIG_NET_VENDOR_GOOGLE is not set +# CONFIG_NET_VENDOR_HISILICON is not set +# CONFIG_NET_VENDOR_HUAWEI is not set +# CONFIG_NET_VENDOR_INTEL is not set +# CONFIG_NET_VENDOR_MARVELL is not set +# CONFIG_NET_VENDOR_MELLANOX is not set +# CONFIG_NET_VENDOR_MICREL is not set +# CONFIG_NET_VENDOR_MICROCHIP is not set +# CONFIG_NET_VENDOR_MICROSEMI is not set +# CONFIG_NET_VENDOR_NATSEMI is not set +# CONFIG_NET_VENDOR_NETRONOME is not set +# CONFIG_NET_VENDOR_NI is not set +# CONFIG_NET_VENDOR_QUALCOMM is not set +# CONFIG_NET_VENDOR_RENESAS is not set +# CONFIG_NET_VENDOR_ROCKER is not set +# CONFIG_NET_VENDOR_SAMSUNG is not set +# CONFIG_NET_VENDOR_SEEQ is not set +# CONFIG_NET_VENDOR_SOLARFLARE is not set +# CONFIG_NET_VENDOR_SMSC is not set +# CONFIG_NET_VENDOR_SOCIONEXT is not set +# CONFIG_NET_VENDOR_STMICRO is not set +# CONFIG_NET_VENDOR_SYNOPSYS is not set +# CONFIG_NET_VENDOR_VIA is not set +# CONFIG_NET_VENDOR_WIZNET is not set +# CONFIG_NET_VENDOR_XILINX is not set +CONFIG_UMAC=y +# CONFIG_USB_NET_DRIVERS is not set +# CONFIG_WLAN is not set +# CONFIG_INPUT_LEDS is not set +CONFIG_INPUT_EVDEV=y +# CONFIG_KEYBOARD_ATKBD is not set +CONFIG_KEYBOARD_GPIO=y +CONFIG_KEYBOARD_GPIO_POLLED=y +# CONFIG_INPUT_MOUSE is not set +CONFIG_SERIO_LIBPS2=y +CONFIG_VT_HW_CONSOLE_BINDING=y +# CONFIG_LEGACY_PTYS is not set +CONFIG_SERIAL_8250=y +# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_8250_NR_UARTS=6 +CONFIG_SERIAL_8250_RUNTIME_UARTS=6 +CONFIG_SERIAL_8250_EXTENDED=y +CONFIG_SERIAL_8250_SHARE_IRQ=y +CONFIG_SERIAL_8250_GXP_VUART=y +CONFIG_SERIAL_OF_PLATFORM=y +CONFIG_TTY_PRINTK=y +CONFIG_IPMI_HANDLER=y +CONFIG_IPMI_DEVICE_INTERFACE=y +CONFIG_IPMI_SI=y +CONFIG_IPMI_SSIF=y +CONFIG_HPE_KCS_IPMI_BMC=y +CONFIG_HW_RANDOM_TIMERIOMEM=y +CONFIG_I2C_CHARDEV=y +CONFIG_I2C_GXP=y +CONFIG_I2C_SLAVE=y +CONFIG_I2C_SLAVE_EEPROM=y +CONFIG_SPI=y +CONFIG_GPIOLIB=y +CONFIG_GPIO_SYSFS=y +CONFIG_GPIO_GXP=y +CONFIG_SENSORS_EMC1403=y +CONFIG_SENSORS_GXP_FAN_CTRL=y +CONFIG_SENSORS_GXP_CORETEMP=y +CONFIG_SENSORS_GXP_PSU=y +CONFIG_SENSORS_GXP_POWER=y +CONFIG_WATCHDOG=y +CONFIG_GXP_WATCHDOG=y +CONFIG_MFD_SYSCON=y +CONFIG_FB=y +CONFIG_FB_THUMBNAIL=y +CONFIG_FB_SIMPLE=y +CONFIG_USB=y +CONFIG_USB_ANNOUNCE_NEW_DEVICES=y +CONFIG_USB_EHCI_HCD=y +CONFIG_USB_EHCI_ROOT_HUB_TT=y +CONFIG_USB_OHCI_HCD=y +CONFIG_USB_OHCI_HCD_PLATFORM=y +CONFIG_USB_STORAGE=y +CONFIG_USB_GADGET=y +CONFIG_USB_GXP_UDC=y +CONFIG_USB_CONFIGFS=y +CONFIG_USB_CONFIGFS_SERIAL=y +CONFIG_USB_CONFIGFS_ACM=y +CONFIG_USB_CONFIGFS_OBEX=y +CONFIG_USB_CONFIGFS_NCM=y +CONFIG_USB_CONFIGFS_ECM=y +CONFIG_USB_CONFIGFS_ECM_SUBSET=y +CONFIG_USB_CONFIGFS_RNDIS=y +CONFIG_USB_CONFIGFS_EEM=y +CONFIG_USB_CONFIGFS_MASS_STORAGE=y +CONFIG_USB_CONFIGFS_F_LB_SS=y +CONFIG_USB_CONFIGFS_F_FS=y +CONFIG_USB_CONFIGFS_F_HID=y +CONFIG_USB_CONFIGFS_F_PRINTER=y +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_GPIO=y +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_TIMER=y +CONFIG_LEDS_TRIGGER_ONESHOT=y +CONFIG_LEDS_TRIGGER_MTD=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +CONFIG_LEDS_TRIGGER_CPU=y +CONFIG_LEDS_TRIGGER_GPIO=y +CONFIG_LEDS_TRIGGER_DEFAULT_ON=y +CONFIG_LEDS_TRIGGER_TRANSIENT=y +CONFIG_LEDS_TRIGGER_PANIC=y +# CONFIG_VIRTIO_MENU is not set +# CONFIG_IOMMU_SUPPORT is not set +CONFIG_HPE_GXP_XREG=y +CONFIG_HPE_GXP_FN2=y +CONFIG_HPE_GXP_CSM=y +CONFIG_HPE_GXP_SROM=y +CONFIG_FANOTIFY=y +CONFIG_OVERLAY_FS=y +CONFIG_OVERLAY_FS_REDIRECT_DIR=y +CONFIG_TMPFS=y +CONFIG_TMPFS_POSIX_ACL=y +CONFIG_JFFS2_FS=y +# CONFIG_JFFS2_FS_WRITEBUFFER is not set +CONFIG_JFFS2_SUMMARY=y +CONFIG_JFFS2_FS_XATTR=y +# CONFIG_JFFS2_FS_POSIX_ACL is not set +# CONFIG_JFFS2_FS_SECURITY is not set +CONFIG_SQUASHFS=y +CONFIG_SQUASHFS_XZ=y +CONFIG_SQUASHFS_4K_DEVBLK_SIZE=y +# CONFIG_NETWORK_FILESYSTEMS is not set +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_ASCII=y +CONFIG_NLS_ISO8859_1=y +CONFIG_NLS_UTF8=y +CONFIG_CRYPTO_CCM=y +CONFIG_CRYPTO_GCM=y +CONFIG_CRYPTO_CRC32C=y +CONFIG_CRYPTO_ARC4=y +CONFIG_CRYPTO_DEFLATE=y +CONFIG_CRYPTO_LZO=y +CONFIG_CRYPTO_ZSTD=y +CONFIG_CRYPTO_USER_API_HASH=y +# CONFIG_CRYPTO_HW is not set +CONFIG_CRC16=y +# CONFIG_XZ_DEC_ARM is not set +# CONFIG_XZ_DEC_ARMTHUMB is not set +CONFIG_DMA_API_DEBUG=y +CONFIG_PRINTK_TIME=y +CONFIG_BOOT_PRINTK_DELAY=y +CONFIG_DYNAMIC_DEBUG=y +CONFIG_DEBUG_INFO=y +# CONFIG_ENABLE_MUST_CHECK is not set +CONFIG_MAGIC_SYSRQ=y +CONFIG_PANIC_ON_OOPS=y +CONFIG_FUNCTION_PROFILER=y +CONFIG_STACK_TRACER=y +CONFIG_SCHED_TRACER=y +CONFIG_STRICT_DEVMEM=y +CONFIG_DEBUG_USER=y +CONFIG_DEBUG_LL=y +CONFIG_DEBUG_LL_UART_8250=y +CONFIG_DEBUG_UART_PHYS=0xC00000F0 +CONFIG_DEBUG_UART_VIRT=0xF00000F0 +CONFIG_DEBUG_UART_8250_SHIFT=0 +CONFIG_EARLY_PRINTK=y +CONFIG_TEST_KSTRTOX=y diff --git a/arch/arm/mach-hpe/Kconfig b/arch/arm/mach-hpe/Kconfig new file mode 100644 index 000000000000..cc63f2be6c9c --- /dev/null +++ b/arch/arm/mach-hpe/Kconfig @@ -0,0 +1,21 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig ARCH_HPE + bool "HPE SoC support" + help + This enables support for HPE ARM based SoC chips +if ARCH_HPE + +config ARCH_HPE_GXP + bool "HPE GXP SoC" + select ARM_VIC + select PINCTRL + select IRQ_DOMAIN + select GENERIC_IRQ_CHIP + select MULTI_IRQ_HANDLER + select SPARSE_IRQ + select CLKSRC_MMIO + depends on ARCH_MULTI_V7 + help + Support for GXP SoCs + +endif diff --git a/arch/arm/mach-hpe/Makefile b/arch/arm/mach-hpe/Makefile new file mode 100644 index 000000000000..8b0a91234df4 --- /dev/null +++ b/arch/arm/mach-hpe/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_ARCH_HPE_GXP) += gxp.o diff --git a/arch/arm/mach-hpe/gxp.c b/arch/arm/mach-hpe/gxp.c new file mode 100644 index 000000000000..a37838247948 --- /dev/null +++ b/arch/arm/mach-hpe/gxp.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2022 Hewlett-Packard Enterprise Development Company, L.P. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + + +#include <linux/init.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/clk-provider.h> +#include <linux/clocksource.h> + +#define IOP_REGS_PHYS_BASE 0xc0000000 +#define IOP_REGS_VIRT_BASE 0xf0000000 +#define IOP_REGS_SIZE (240*SZ_1M) + +#define IOP_EHCI_USBCMD 0x0efe0010 + +static struct map_desc gxp_io_desc[] __initdata = { + { + .virtual = (unsigned long)IOP_REGS_VIRT_BASE, + .pfn = __phys_to_pfn(IOP_REGS_PHYS_BASE), + .length = IOP_REGS_SIZE, + .type = MT_DEVICE, + }, +}; + +void __init gxp_map_io(void) +{ + iotable_init(gxp_io_desc, ARRAY_SIZE(gxp_io_desc)); +} + +static void __init gxp_dt_init(void) +{ + /*reset EHCI host controller for clear start*/ + __raw_writel(0x00080002, + (void __iomem *)(IOP_REGS_VIRT_BASE + IOP_EHCI_USBCMD)); + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); +} + +static void gxp_restart(enum reboot_mode mode, const char *cmd) +{ + __raw_writel(1, (void __iomem *) IOP_REGS_VIRT_BASE); +} + +static const char * const gxp_board_dt_compat[] = { + "HPE,GXP", + NULL, +}; + +DT_MACHINE_START(GXP_DT, "HPE GXP") + .init_machine = gxp_dt_init, + .map_io = gxp_map_io, + .restart = gxp_restart, + .dt_compat = gxp_board_dt_compat, +MACHINE_END diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index cfb8ea0df3b1..5916dade7608 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -617,6 +617,14 @@ config CLKSRC_ST_LPC Enable this option to use the Low Power controller timer as clocksource. +config GXP_TIMER + bool "GXP timer driver" + depends on ARCH_HPE + default y + help + Provides a driver for the timer control found on HPE + GXP SOCs. This is required for all GXP SOCs. + config ATCPIT100_TIMER bool "ATCPIT100 timer driver" depends on NDS32 || COMPILE_TEST diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index fa5f624eadb6..ffca09ec34de 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -89,3 +89,4 @@ obj-$(CONFIG_GX6605S_TIMER) += timer-gx6605s.o obj-$(CONFIG_HYPERV_TIMER) += hyperv_timer.o obj-$(CONFIG_MICROCHIP_PIT64B) += timer-microchip-pit64b.o obj-$(CONFIG_MSC313E_TIMER) += timer-msc313e.o +obj-$(CONFIG_GXP_TIMER) += gxp_timer.o diff --git a/drivers/clocksource/gxp_timer.c b/drivers/clocksource/gxp_timer.c new file mode 100644 index 000000000000..e3c617036e0d --- /dev/null +++ b/drivers/clocksource/gxp_timer.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2022 Hewlett-Packard Enterprise Development Company, L.P. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/bitops.h> +#include <linux/clockchips.h> +#include <linux/clocksource.h> +#include <linux/interrupt.h> +#include <linux/irqreturn.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/of_platform.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/sched_clock.h> + +#include <asm/irq.h> + +#define TIMER0_FREQ 1000000 +#define TIMER1_FREQ 1000000 + +#define MASK_TCS_ENABLE 0x01 +#define MASK_TCS_PERIOD 0x02 +#define MASK_TCS_RELOAD 0x04 +#define MASK_TCS_TC 0x80 + +struct gxp_timer { + void __iomem *counter; + void __iomem *control; + struct clock_event_device evt; +}; + +static void __iomem *system_clock __read_mostly; + +static u64 notrace gxp_sched_read(void) +{ + return readl_relaxed(system_clock); +} + +static int gxp_time_set_next_event(unsigned long event, + struct clock_event_device *evt_dev) +{ + struct gxp_timer *timer = container_of(evt_dev, struct gxp_timer, evt); + /*clear TC by write 1 and disable timer int and counting*/ + writeb_relaxed(MASK_TCS_TC, timer->control); + /*update counter value*/ + writel_relaxed(event, timer->counter); + /*enable timer counting and int*/ + writeb_relaxed(MASK_TCS_TC|MASK_TCS_ENABLE, timer->control); + + return 0; +} + +static irqreturn_t gxp_time_interrupt(int irq, void *dev_id) +{ + struct gxp_timer *timer = dev_id; + void (*event_handler)(struct clock_event_device *timer); + + + if (readb_relaxed(timer->control) & MASK_TCS_TC) { + writeb_relaxed(MASK_TCS_TC, timer->control); + + event_handler = READ_ONCE(timer->evt.event_handler); + if (event_handler) + event_handler(&timer->evt); + return IRQ_HANDLED; + } else { + return IRQ_NONE; + } +} + +static int __init gxp_timer_init(struct device_node *node) +{ + void __iomem *base_counter; + void __iomem *base_control; + u32 freq; + int ret, irq; + struct gxp_timer *gxp_timer; + + base_counter = of_iomap(node, 0); + if (!base_counter) { + pr_err("Can't remap counter registers"); + return -ENXIO; + } + + base_control = of_iomap(node, 1); + if (!base_control) { + pr_err("Can't remap control registers"); + return -ENXIO; + } + + system_clock = of_iomap(node, 2); + if (!system_clock) { + pr_err("Can't remap control registers"); + return -ENXIO; + } + + if (of_property_read_u32(node, "clock-frequency", &freq)) { + pr_err("Can't read clock-frequency\n"); + goto err_iounmap; + } + + sched_clock_register(gxp_sched_read, 32, freq); + clocksource_mmio_init(system_clock, node->name, freq, + 300, 32, clocksource_mmio_readl_up); + + irq = irq_of_parse_and_map(node, 0); + if (irq <= 0) { + ret = -EINVAL; + pr_err("GXP Timer Can't parse IRQ %d", irq); + goto err_iounmap; + } + + gxp_timer = kzalloc(sizeof(*gxp_timer), GFP_KERNEL); + if (!gxp_timer) { + ret = -ENOMEM; + goto err_iounmap; + } + + gxp_timer->counter = base_counter; + gxp_timer->control = base_control; + gxp_timer->evt.name = node->name; + gxp_timer->evt.rating = 300; + gxp_timer->evt.features = CLOCK_EVT_FEAT_ONESHOT; + gxp_timer->evt.set_next_event = gxp_time_set_next_event; + gxp_timer->evt.cpumask = cpumask_of(0); + + if (request_irq(irq, gxp_time_interrupt, IRQF_TIMER | IRQF_SHARED, + node->name, gxp_timer)) { + pr_err("%s: request_irq() failed\n", "GXP Timer Tick"); + goto err_timer_free; + } + + clockevents_config_and_register(&gxp_timer->evt, TIMER0_FREQ, + 0xf, 0xffffffff); + + pr_info("gxp: system timer (irq = %d)\n", irq); + return 0; + + +err_timer_free: + kfree(gxp_timer); + +err_iounmap: + iounmap(system_clock); + iounmap(base_control); + iounmap(base_counter); + return ret; +} + +TIMER_OF_DECLARE(gxp, "hpe,gxp-timer", gxp_timer_init);