| Message ID | 74199551e7a9e43a9aa2e1ed1a678493e7a8fb2c.1728300189.git.andrea.porta@suse.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add support for RaspberryPi RP1 PCI device using a DT overlay | expand |
On Mon, Oct 07, 2024 at 02:39:44PM +0200, Andrea della Porta wrote: > Add device tree bindings for the clock generator found in RP1 multi > function device, and relative entries in MAINTAINERS file. > > Signed-off-by: Andrea della Porta <andrea.porta@suse.com> > --- > .../clock/raspberrypi,rp1-clocks.yaml | 62 +++++++++++++++++++ > MAINTAINERS | 6 ++ > .../clock/raspberrypi,rp1-clocks.h | 61 ++++++++++++++++++ > 3 files changed, 129 insertions(+) > create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > create mode 100644 include/dt-bindings/clock/raspberrypi,rp1-clocks.h > > diff --git a/Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml b/Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > new file mode 100644 > index 000000000000..5e2e98051bf3 > --- /dev/null > +++ b/Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > @@ -0,0 +1,62 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/clock/raspberrypi,rp1-clocks.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: RaspberryPi RP1 clock generator > + > +maintainers: > + - Andrea della Porta <andrea.porta@suse.com> > + > +description: | > + The RP1 contains a clock generator designed as three PLLs (CORE, AUDIO, > + VIDEO), and each PLL output can be programmed though dividers to generate > + the clocks to drive the sub-peripherals embedded inside the chipset. > + > + Link to datasheet: > + https://datasheets.raspberrypi.com/rp1/rp1-peripherals.pdf > + > +properties: > + compatible: > + const: raspberrypi,rp1-clocks > + > + reg: > + maxItems: 1 > + > + '#clock-cells': > + description: > + The index in the assigned-clocks is mapped to the output clock as per How assigned-clocks is related to this? Drop. > + definitions in dt-bindings/clock/raspberrypi,rp1-clocks.h. Use full paths, so they can be validated. This applies to all your patches. > + const: 1 > + > + clocks: > + maxItems: 1 > + > + clock-names: > + const: rp1-xosc Drop clock-names, redundant. Or just "xosc". Hyphens are not recommended character and rp1 is redundant. > + > +required: > + - compatible > + - reg > + - '#clock-cells' > + - clocks > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/clock/raspberrypi,rp1-clocks.h> > + > + rp1 { > + #address-cells = <2>; > + #size-cells = <2>; > + > + rp1_clocks: clocks@c040018000 { Drop unused label. > + compatible = "raspberrypi,rp1-clocks"; > + reg = <0xc0 0x40018000 0x0 0x10038>; > + #clock-cells = <1>; > + clocks = <&clk_rp1_xosc>; > + clock-names = "rp1-xosc"; > + }; > + }; > diff --git a/MAINTAINERS b/MAINTAINERS > index c27f3190737f..75a66e3e34c9 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -19380,6 +19380,12 @@ F: Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml > F: drivers/media/platform/raspberrypi/pisp_be/ > F: include/uapi/linux/media/raspberrypi/ > > +RASPBERRY PI RP1 PCI DRIVER > +M: Andrea della Porta <andrea.porta@suse.com> > +S: Maintained > +F: Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > +F: include/dt-bindings/clock/rp1.h > + > RC-CORE / LIRC FRAMEWORK > M: Sean Young <sean@mess.org> > L: linux-media@vger.kernel.org > diff --git a/include/dt-bindings/clock/raspberrypi,rp1-clocks.h b/include/dt-bindings/clock/raspberrypi,rp1-clocks.h > new file mode 100644 > index 000000000000..b7c1eaa74eae > --- /dev/null > +++ b/include/dt-bindings/clock/raspberrypi,rp1-clocks.h > @@ -0,0 +1,61 @@ > +/* SPDX-License-Identifier: GPL-2.0 OR MIT */ Any reason for different license? > +/* > + * Copyright (C) 2021 Raspberry Pi Ltd. > + */ Best regards, Krzysztof
Hi Krzysztof, On 08:31 Tue 08 Oct , Krzysztof Kozlowski wrote: > On Mon, Oct 07, 2024 at 02:39:44PM +0200, Andrea della Porta wrote: > > Add device tree bindings for the clock generator found in RP1 multi > > function device, and relative entries in MAINTAINERS file. > > > > Signed-off-by: Andrea della Porta <andrea.porta@suse.com> > > --- > > .../clock/raspberrypi,rp1-clocks.yaml | 62 +++++++++++++++++++ > > MAINTAINERS | 6 ++ > > .../clock/raspberrypi,rp1-clocks.h | 61 ++++++++++++++++++ > > 3 files changed, 129 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > > create mode 100644 include/dt-bindings/clock/raspberrypi,rp1-clocks.h > > > > diff --git a/Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml b/Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > > new file mode 100644 > > index 000000000000..5e2e98051bf3 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > > @@ -0,0 +1,62 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/clock/raspberrypi,rp1-clocks.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: RaspberryPi RP1 clock generator > > + > > +maintainers: > > + - Andrea della Porta <andrea.porta@suse.com> > > + > > +description: | > > + The RP1 contains a clock generator designed as three PLLs (CORE, AUDIO, > > + VIDEO), and each PLL output can be programmed though dividers to generate > > + the clocks to drive the sub-peripherals embedded inside the chipset. > > + > > + Link to datasheet: > > + https://datasheets.raspberrypi.com/rp1/rp1-peripherals.pdf > > + > > +properties: > > + compatible: > > + const: raspberrypi,rp1-clocks > > + > > + reg: > > + maxItems: 1 > > + > > + '#clock-cells': > > + description: > > + The index in the assigned-clocks is mapped to the output clock as per > > How assigned-clocks is related to this? Drop. This node provides clock for several peripherals, and for minimum functionality at least 3 clocks have to be setup through assigned-clocks (and assigned-clock-rates). That should be done in this same node (the provider of the clocks) because those clocks are shared among peripherals or clock generators, so cannot be described from consumers or we could incur in multiple declaration of the same clock. I dropped the assigned-clocks and assigned-clock-rates from the example section because Conor commented (see the first patchset version) that according to him those properties were not relevant there, maybe I failed to produce a careful explanation about why they are important. What should be the right course of action, then? Just drop that description or leave it as it is (maybe augmenting it with what I've explained here) and add again the dropped properties in the example? I would be inclined to vote for the latter, but I'm not sure... > > > + definitions in dt-bindings/clock/raspberrypi,rp1-clocks.h. > > Use full paths, so they can be validated. This applies to all your > patches. Ack. > > > + const: 1 > > + > > + clocks: > > + maxItems: 1 > > + > > + clock-names: > > + const: rp1-xosc > > Drop clock-names, redundant. Or just "xosc". Hyphens are not recommended > character and rp1 is redundant. Ack. > > > + > > +required: > > + - compatible > > + - reg > > + - '#clock-cells' > > + - clocks > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + #include <dt-bindings/clock/raspberrypi,rp1-clocks.h> > > + > > + rp1 { > > + #address-cells = <2>; > > + #size-cells = <2>; > > + > > + rp1_clocks: clocks@c040018000 { > > Drop unused label. Ack. > > > + compatible = "raspberrypi,rp1-clocks"; > > + reg = <0xc0 0x40018000 0x0 0x10038>; > > + #clock-cells = <1>; > > + clocks = <&clk_rp1_xosc>; > > + clock-names = "rp1-xosc"; > > + }; > > + }; > > diff --git a/MAINTAINERS b/MAINTAINERS > > index c27f3190737f..75a66e3e34c9 100644 > > --- a/MAINTAINERS > > +++ b/MAINTAINERS > > @@ -19380,6 +19380,12 @@ F: Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml > > F: drivers/media/platform/raspberrypi/pisp_be/ > > F: include/uapi/linux/media/raspberrypi/ > > > > +RASPBERRY PI RP1 PCI DRIVER > > +M: Andrea della Porta <andrea.porta@suse.com> > > +S: Maintained > > +F: Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > > +F: include/dt-bindings/clock/rp1.h > > + > > RC-CORE / LIRC FRAMEWORK > > M: Sean Young <sean@mess.org> > > L: linux-media@vger.kernel.org > > diff --git a/include/dt-bindings/clock/raspberrypi,rp1-clocks.h b/include/dt-bindings/clock/raspberrypi,rp1-clocks.h > > new file mode 100644 > > index 000000000000..b7c1eaa74eae > > --- /dev/null > > +++ b/include/dt-bindings/clock/raspberrypi,rp1-clocks.h > > @@ -0,0 +1,61 @@ > > +/* SPDX-License-Identifier: GPL-2.0 OR MIT */ > > Any reason for different license? Not really, I'll revert it back to the usual (GPL-2.0-only OR BSD-2-Clause), as the other schemas. Many thanks, Andrea > > > +/* > > + * Copyright (C) 2021 Raspberry Pi Ltd. > > + */ > > Best regards, > Krzysztof >
diff --git a/Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml b/Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml new file mode 100644 index 000000000000..5e2e98051bf3 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml @@ -0,0 +1,62 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/raspberrypi,rp1-clocks.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: RaspberryPi RP1 clock generator + +maintainers: + - Andrea della Porta <andrea.porta@suse.com> + +description: | + The RP1 contains a clock generator designed as three PLLs (CORE, AUDIO, + VIDEO), and each PLL output can be programmed though dividers to generate + the clocks to drive the sub-peripherals embedded inside the chipset. + + Link to datasheet: + https://datasheets.raspberrypi.com/rp1/rp1-peripherals.pdf + +properties: + compatible: + const: raspberrypi,rp1-clocks + + reg: + maxItems: 1 + + '#clock-cells': + description: + The index in the assigned-clocks is mapped to the output clock as per + definitions in dt-bindings/clock/raspberrypi,rp1-clocks.h. + const: 1 + + clocks: + maxItems: 1 + + clock-names: + const: rp1-xosc + +required: + - compatible + - reg + - '#clock-cells' + - clocks + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/raspberrypi,rp1-clocks.h> + + rp1 { + #address-cells = <2>; + #size-cells = <2>; + + rp1_clocks: clocks@c040018000 { + compatible = "raspberrypi,rp1-clocks"; + reg = <0xc0 0x40018000 0x0 0x10038>; + #clock-cells = <1>; + clocks = <&clk_rp1_xosc>; + clock-names = "rp1-xosc"; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index c27f3190737f..75a66e3e34c9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19380,6 +19380,12 @@ F: Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml F: drivers/media/platform/raspberrypi/pisp_be/ F: include/uapi/linux/media/raspberrypi/ +RASPBERRY PI RP1 PCI DRIVER +M: Andrea della Porta <andrea.porta@suse.com> +S: Maintained +F: Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml +F: include/dt-bindings/clock/rp1.h + RC-CORE / LIRC FRAMEWORK M: Sean Young <sean@mess.org> L: linux-media@vger.kernel.org diff --git a/include/dt-bindings/clock/raspberrypi,rp1-clocks.h b/include/dt-bindings/clock/raspberrypi,rp1-clocks.h new file mode 100644 index 000000000000..b7c1eaa74eae --- /dev/null +++ b/include/dt-bindings/clock/raspberrypi,rp1-clocks.h @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: GPL-2.0 OR MIT */ +/* + * Copyright (C) 2021 Raspberry Pi Ltd. + */ + +#ifndef __DT_BINDINGS_CLOCK_RASPBERRYPI_RP1 +#define __DT_BINDINGS_CLOCK_RASPBERRYPI_RP1 + +#define RP1_PLL_SYS_CORE 0 +#define RP1_PLL_AUDIO_CORE 1 +#define RP1_PLL_VIDEO_CORE 2 + +#define RP1_PLL_SYS 3 +#define RP1_PLL_AUDIO 4 +#define RP1_PLL_VIDEO 5 + +#define RP1_PLL_SYS_PRI_PH 6 +#define RP1_PLL_SYS_SEC_PH 7 +#define RP1_PLL_AUDIO_PRI_PH 8 + +#define RP1_PLL_SYS_SEC 9 +#define RP1_PLL_AUDIO_SEC 10 +#define RP1_PLL_VIDEO_SEC 11 + +#define RP1_CLK_SYS 12 +#define RP1_CLK_SLOW_SYS 13 +#define RP1_CLK_DMA 14 +#define RP1_CLK_UART 15 +#define RP1_CLK_ETH 16 +#define RP1_CLK_PWM0 17 +#define RP1_CLK_PWM1 18 +#define RP1_CLK_AUDIO_IN 19 +#define RP1_CLK_AUDIO_OUT 20 +#define RP1_CLK_I2S 21 +#define RP1_CLK_MIPI0_CFG 22 +#define RP1_CLK_MIPI1_CFG 23 +#define RP1_CLK_PCIE_AUX 24 +#define RP1_CLK_USBH0_MICROFRAME 25 +#define RP1_CLK_USBH1_MICROFRAME 26 +#define RP1_CLK_USBH0_SUSPEND 27 +#define RP1_CLK_USBH1_SUSPEND 28 +#define RP1_CLK_ETH_TSU 29 +#define RP1_CLK_ADC 30 +#define RP1_CLK_SDIO_TIMER 31 +#define RP1_CLK_SDIO_ALT_SRC 32 +#define RP1_CLK_GP0 33 +#define RP1_CLK_GP1 34 +#define RP1_CLK_GP2 35 +#define RP1_CLK_GP3 36 +#define RP1_CLK_GP4 37 +#define RP1_CLK_GP5 38 +#define RP1_CLK_VEC 39 +#define RP1_CLK_DPI 40 +#define RP1_CLK_MIPI0_DPI 41 +#define RP1_CLK_MIPI1_DPI 42 + +/* Extra PLL output channels - RP1B0 only */ +#define RP1_PLL_VIDEO_PRI_PH 43 +#define RP1_PLL_AUDIO_TERN 44 + +#endif
Add device tree bindings for the clock generator found in RP1 multi function device, and relative entries in MAINTAINERS file. Signed-off-by: Andrea della Porta <andrea.porta@suse.com> --- .../clock/raspberrypi,rp1-clocks.yaml | 62 +++++++++++++++++++ MAINTAINERS | 6 ++ .../clock/raspberrypi,rp1-clocks.h | 61 ++++++++++++++++++ 3 files changed, 129 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml create mode 100644 include/dt-bindings/clock/raspberrypi,rp1-clocks.h