| Message ID | 20220116165035.437274-4-henrik@grimler.se |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add initial support for exynos5420-chagall-wifi | expand |
On 16/01/2022 17:50, Henrik Grimler wrote: > Chagall WiFi, with product name Samsung Galaxy Tab S 10.5", is based > on Exynos 5420. This device is one of several tablet models released > in 2014 based on Exynos 5420. > > The device tree added here contains support for: > > - UART > - eMMC > - SD card > - USB > > CCI has been disabled in the hardware, enabling it would require > (de-)soldering a resistor on the board. Trying to boot with it > enabled in kernel makes the device hang when CCI is probed. > Exynos5420-arndale-octa also has had CCI disabled due to issues, see > commit 25217fef3551 ("ARM: dts: disable CCI on exynos5420 based > arndale-octa"). > > Signed-off-by: Henrik Grimler <henrik@grimler.se> > --- > arch/arm/boot/dts/Makefile | 1 + > arch/arm/boot/dts/exynos5420-chagall-wifi.dts | 65 ++ > .../dts/exynos5420-galaxy-tab-common.dtsi | 666 ++++++++++++++++++ > 3 files changed, 732 insertions(+) > create mode 100644 arch/arm/boot/dts/exynos5420-chagall-wifi.dts > create mode 100644 arch/arm/boot/dts/exynos5420-galaxy-tab-common.dtsi > > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile > index 0de64f237cd8..088fcedb3212 100644 > --- a/arch/arm/boot/dts/Makefile > +++ b/arch/arm/boot/dts/Makefile > @@ -220,6 +220,7 @@ dtb-$(CONFIG_ARCH_EXYNOS5) += \ > exynos5420-arndale-octa.dtb \ > exynos5420-peach-pit.dtb \ > exynos5420-smdk5420.dtb \ > + exynos5420-chagall-wifi.dtb \ > exynos5422-odroidhc1.dtb \ > exynos5422-odroidxu3.dtb \ > exynos5422-odroidxu3-lite.dtb \ > diff --git a/arch/arm/boot/dts/exynos5420-chagall-wifi.dts b/arch/arm/boot/dts/exynos5420-chagall-wifi.dts > new file mode 100644 > index 000000000000..2cc5cd01e8c6 > --- /dev/null > +++ b/arch/arm/boot/dts/exynos5420-chagall-wifi.dts > @@ -0,0 +1,65 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Samsung's Exynos5420 Chagall WiFi board device tree source > + * > + * Copyright (c) 2012-2013 Samsung Electronics Co., Ltd. > + * http://www.samsung.com > + * Copyright (c) 2022 Henrik Grimler > + */ > + > +/dts-v1/; > +#include "exynos5420-galaxy-tab-common.dtsi" > + > +/ { > + model = "Samsung Chagall WiFi based on Exynos5420"; > + compatible = "samsung,chagall-wifi", "samsung,exynos5420", \ > + "samsung,exynos5"; > +}; > + > +&ldo15_reg { > + /* Unused */ > + regulator-name = "VDD_LDO15"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > +}; > + > +&ldo17_reg { > + regulator-name = "VDD_IRLED_3V3"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3350000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > +}; > + > +&ldo28_reg { > + /* Unused */ > + regulator-name = "VDD_LDO28"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > +}; > + > +&ldo29_reg { > + regulator-name = "VDD_TCON_1V8"; > + regulator-min-microvolt = <1900000>; > + regulator-max-microvolt = <1900000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > +}; > + > +&ldo31_reg { > + regulator-name = "VDD_GRIP_1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > +}; > diff --git a/arch/arm/boot/dts/exynos5420-galaxy-tab-common.dtsi b/arch/arm/boot/dts/exynos5420-galaxy-tab-common.dtsi > new file mode 100644 > index 000000000000..119e4e7a8328 > --- /dev/null > +++ b/arch/arm/boot/dts/exynos5420-galaxy-tab-common.dtsi > @@ -0,0 +1,666 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Base DT for Samsung's family of tablets based on Exynos5420. > + * > + * Copyright (c) 2012-2013 Samsung Electronics Co., Ltd. > + * http://www.samsung.com > + * Copyright (c) 2022 Henrik Grimler > + */ > + > +/dts-v1/; > +#include "exynos5420.dtsi" > +#include "exynos5420-cpus.dtsi" > +#include <dt-bindings/input/input.h> > +#include <dt-bindings/gpio/gpio.h> > +#include <dt-bindings/clock/samsung,s2mps11.h> > + > +/ { > + chassis-type = "tablet"; > + > + /* > + * To successfully boot the mainline kernel with the stock > + * bootloader (SBOOT), the tlb needs to be flushed after the > + * page table pointer has been updated in __common_mmu_cache_on. > + * The same hack is also needed to boot exynos4412-i9300 with > + * stock bootloader, and probably other Samsung devices of > + * similar age. See > + * https://lore.kernel.org/all/1355276466-18295-1-git-send-email-arve@android.com > + * for more details. > + */ > + > + chosen { > + stdout-path = "serial2:115200n8"; > + }; > + > + memory@20000000 { > + device_type = "memory"; > + reg = <0x20000000 0xc0000000>; > + }; > + > + firmware@2073000 { > + compatible = "samsung,secure-firmware"; > + reg = <0x02073000 0x1000>; > + }; > + > + fixed-rate-clocks { > + oscclk { > + compatible = "samsung,exynos5420-oscclk"; > + clock-frequency = <24000000>; > + }; > + }; > + > + gpio-keys { > + compatible = "gpio-keys"; > + pinctrl-names = "default"; > + > + key-power { > + debounce-interval = <10>; > + gpios = <&gpx2 2 GPIO_ACTIVE_LOW>; > + label = "Power"; > + linux,code = <KEY_POWER>; > + wakeup-source; > + }; > + > + key-home { > + debounce-interval = <10>; > + gpios = <&gpx0 5 GPIO_ACTIVE_LOW>; > + label = "Home"; > + linux,code = <KEY_HOME>; > + wakeup-source; > + }; > + > + key-volume-up { > + debounce-interval = <10>; > + gpios = <&gpx0 2 GPIO_ACTIVE_LOW>; > + label = "Volume Up"; > + linux,code = <KEY_VOLUMEUP>; > + }; > + > + key-volume-down { > + debounce-interval = <10>; > + gpios = <&gpx0 3 GPIO_ACTIVE_LOW>; > + label = "Volume Down"; > + linux,code = <KEY_VOLUMEDOWN>; > + }; > + }; > +}; > + > +&cci { > + /* CCI is disabled in hardware */ > + status = "disabled"; > +}; > + > +&cpu0 { > + cpu-supply = <&buck2_reg>; > +}; > + > +&cpu4 { > + cpu-supply = <&buck6_reg>; > +}; > + > +&gpu { > + status = "okay"; > + mali-supply = <&buck4_reg>; > +}; > + > +&hsi2c_7 { > + status = "okay"; > + > + pmic@66 { > + compatible = "samsung,s2mps11-pmic"; > + reg = <0x66>; > + > + interrupt-parent = <&gpx3>; > + interrupts = <2 IRQ_TYPE_LEVEL_LOW>; > + pinctrl-names = "default"; > + pinctrl-0 = <&s2mps11_irq>; > + > + s2mps11_osc: clocks { > + compatible = "samsung,s2mps11-clk"; > + #clock-cells = <1>; > + clock-output-names = "s2mps11_ap", "s2mps11_cp", > + "s2mps11_bt"; > + }; > + > + regulators { > + buck1_reg: BUCK1 { > + regulator-name = "VDD_MIF_1V1"; > + regulator-min-microvolt = <700000>; > + regulator-max-microvolt = <1300000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + buck2_reg: BUCK2 { > + regulator-name = "VDD_ARM_1V0"; > + regulator-min-microvolt = <800000>; > + regulator-max-microvolt = <1500000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + buck3_reg: BUCK3 { > + regulator-name = "VDD_INT_1V0"; > + regulator-min-microvolt = <800000>; > + regulator-max-microvolt = <1400000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + buck4_reg: BUCK4 { > + regulator-name = "VDD_G3D_1V0"; > + regulator-min-microvolt = <700000>; > + regulator-max-microvolt = <1400000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + buck5_reg: BUCK5 { > + regulator-name = "VDD_MEM_1V2"; > + regulator-min-microvolt = <1200000>; > + regulator-max-microvolt = <1200000>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + buck6_reg: BUCK6 { > + regulator-name = "VDD_KFC_1V0"; > + regulator-min-microvolt = <800000>; > + regulator-max-microvolt = <1500000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + buck7_reg: BUCK7 { > + regulator-name = "VIN_LLDO_1V4"; > + regulator-min-microvolt = <1200000>; > + regulator-max-microvolt = <1500000>; > + regulator-always-on; > + }; > + > + buck8_reg: BUCK8 { > + regulator-name = "VIN_MLDO_2V0"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <2100000>; > + regulator-always-on; > + }; > + > + buck9_reg: BUCK9 { > + regulator-name = "VIN_HLDO_3V5"; > + regulator-min-microvolt = <3000000>; > + regulator-max-microvolt = <3500000>; > + regulator-always-on; > + }; > + > + buck10_reg: BUCK10 { > + regulator-name = "VDD_CAM_ISP_1V0"; > + regulator-min-microvolt = <750000>; > + regulator-max-microvolt = <3550000>; > + }; > + > + ldo1_reg: LDO1 { > + regulator-name = "VDD_ALIVE_1.0V"; > + regulator-min-microvolt = <1000000>; > + regulator-max-microvolt = <1000000>; > + regulator-always-on; > + }; > + > + ldo2_reg: LDO2 { > + regulator-name = "VDD_APIO_1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + ldo3_reg: LDO3 { > + regulator-name = "VDD_APIO_MMC01_1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + regulator-always-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo4_reg: LDO4 { > + regulator-name = "VDD_ADC_1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + ldo5_reg: LDO5 { > + /* Unused */ > + regulator-name = "VDD_LDO5"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + }; > + > + ldo6_reg: LDO6 { > + regulator-name = "VDD_MIPI_1V0"; > + regulator-min-microvolt = <1000000>; > + regulator-max-microvolt = <1000000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo7_reg: LDO7 { > + regulator-name = "VDD_MIPI_PLL_ABB1_18V"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo8_reg: LDO8 { > + /* Unused */ > + regulator-name = "VDD_LDO8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + }; > + > + ldo9_reg: LDO9 { > + regulator-name = "VDD_UOTG_3V0"; > + regulator-min-microvolt = <3000000>; > + regulator-max-microvolt = <3000000>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + ldo10_reg: LDO10 { > + regulator-name = "VDDQ_PRE_1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + ldo11_reg: LDO11 { > + regulator-name = "VDD_HSIC_1V0"; > + regulator-min-microvolt = <1000000>; > + regulator-max-microvolt = <1000000>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + ldo12_reg: LDO12 { > + regulator-name = "VDD_HSIC_1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + ldo13_reg: LDO13 { > + regulator-name = "VDD_APIO_MMC2_2V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <2800000>; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo14_reg: LDO14 { > + regulator-name = "VDD_MOTOR_3V0"; > + regulator-min-microvolt = <3000000>; > + regulator-max-microvolt = <3000000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo15_reg: LDO15 { > + regulator-name = "LDO15"; > + /* > + * LDO15 varies between devices and is > + * specified in the device dts > + */ > + }; > + > + ldo16_reg: LDO16 { > + regulator-name = "VDD_AP_2V8"; > + regulator-min-microvolt = <2800000>; > + regulator-max-microvolt = <2800000>; > + regulator-always-on; > + regulator-boot-on; > + > + regulator-state-mem { > + regulator-on-in-suspend; > + }; > + }; > + > + ldo17_reg: LDO17 { > + regulator-name = "LDO17"; > + /* > + * LDO17 varies between devices and is > + * specified in the device dts > + */ > + }; > + > + ldo18_reg: LDO18 { > + /* Unused */ > + regulator-name = "VDD_LDO18"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + }; > + > + > + ldo19_reg: LDO19 { > + regulator-name = "VDD_VTF_2V8"; > + regulator-min-microvolt = <2800000>; > + regulator-max-microvolt = <2800000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo20_reg: LDO20 { > + regulator-name = "VDD_CAM1_CAM_1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo21_reg: LDO21 { > + regulator-name = "VDD_CAM_IO_1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo22_reg: LDO22 { > + regulator-name = "VDD_CAM0_S_CORE_1V1"; > + regulator-min-microvolt = <1050000>; > + regulator-max-microvolt = <1200000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo23_reg: LDO23 { > + regulator-name = "VDD_MIFS_1V1"; > + regulator-min-microvolt = <800000>; > + regulator-max-microvolt = <1100000>; > + regulator-always-on; > + > + regulator-state-mem { > + regulator-on-in-suspend; > + }; > + }; > + > + ldo24_reg: LDO24 { > + regulator-name = "VDD_TSP_3V3"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo25_reg: LDO25 { > + /* Unused */ > + regulator-name = "VDD_LDO25"; > + regulator-min-microvolt = <800000>; > + regulator-max-microvolt = <3950000>; > + }; > + > + ldo26_reg: LDO26 { > + regulator-name = "VDD_CAM0_AF_2V8"; > + regulator-min-microvolt = <2800000>; > + regulator-max-microvolt = <2800000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo27_reg: LDO27 { > + regulator-name = "VDD_G3DS_1V0"; > + regulator-min-microvolt = <800000>; > + regulator-max-microvolt = <1000000>; > + regulator-always-on; > + > + regulator-state-mem { > + regulator-on-in-suspend; > + }; > + }; > + > + ldo28_reg: LDO28 { > + regulator-name = "LDO28"; > + /* > + * LDO28 varies between devices and is > + * specified in the device dts > + */ > + }; > + > + ldo29_reg: LDO29 { > + regulator-name = "LDO29"; > + /* > + * LDO29 varies between devices and is > + * specified in the device dts > + */ > + }; > + > + ldo30_reg: LDO30 { > + regulator-name = "VDD_TOUCH_1V8"; > + regulator-min-microvolt = <1900000>; > + regulator-max-microvolt = <1900000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo31_reg: LDO31 { > + regulator-name = "LDO31"; > + /* > + * LDO31 varies between devices and is > + * specified in the device dts > + */ > + }; > + > + ldo32_reg: LDO32 { > + regulator-name = "VDD_TSP_1V8"; > + regulator-min-microvolt = <1900000>; > + regulator-max-microvolt = <1900000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo33_reg: LDO33 { > + regulator-name = "VDD_MHL_1V8"; > + regulator-min-microvolt = <1800000>; > + regulator-max-microvolt = <1800000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo34_reg: LDO34 { > + regulator-name = "VDD_MHL_3V3"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo35_reg: LDO35 { > + regulator-name = "VDD_SIL_1V2"; > + regulator-min-microvolt = <1200000>; > + regulator-max-microvolt = <1200000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + > + ldo36_reg: LDO36 { > + /* Unused */ > + regulator-name = "VDD_LDO36"; > + regulator-min-microvolt = <800000>; > + regulator-max-microvolt = <3950000>; > + }; > + > + ldo37_reg: LDO37 { > + /* Unused */ > + regulator-name = "VDD_LDO37"; > + regulator-min-microvolt = <800000>; > + regulator-max-microvolt = <3950000>; > + }; > + > + ldo38_reg: LDO38 { > + regulator-name = "VDD_KEY_LED_3V3"; > + regulator-min-microvolt = <2500000>; > + regulator-max-microvolt = <3300000>; > + > + regulator-state-mem { > + regulator-off-in-suspend; > + }; > + }; > + }; > + }; > +}; > + > +&mixer { > + status = "okay"; > +}; > + > +/* Internal storage */ > +&mmc_0 { > + status = "okay"; > + bus-width = <8>; > + cap-mmc-highspeed; > + card-detect-delay = <200>; > + mmc-hs200-1_8v; > + non-removable; > + pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus1 &sd0_bus4 &sd0_bus8>; > + pinctrl-names = "default"; > + samsung,dw-mshc-ciu-div = <3>; > + samsung,dw-mshc-ddr-timing = <0 2>; > + samsung,dw-mshc-sdr-timing = <0 4>; > + vqmmc-supply = <&ldo3_reg>; > +}; > + > +/* External sdcard */ > +&mmc_2 { > + status = "okay"; > + bus-width = <4>; > + cap-sd-highspeed; > + card-detect-delay = <200>; > + pinctrl-0 = <&sd2_clk &sd2_cmd &mmc2_cd &sd2_bus1 &sd2_bus4>; > + pinctrl-names = "default"; > + samsung,dw-mshc-ciu-div = <3>; > + samsung,dw-mshc-ddr-timing = <0 2>; > + samsung,dw-mshc-sdr-timing = <0 4>; > + sd-uhs-sdr50; > + vmmc-supply = <&ldo19_reg>; > + vqmmc-supply = <&ldo13_reg>; > +}; > + > +&pinctrl_0 { > + mmc2_cd: sd2-cd-pins { > + samsung,pins = "gpx2-4"; Interesting... I looked at vendor sources to board-chagall and standard pin gpc2-2 is mentioned as PULL down and not-connected comment. gpx2-4 seems not mentioned at all, unless other board files are actually used. Anyway, if it works for you, it's good. Rest looks ok, I'll apply after the merge window. Best regards, Krzysztof
Hi Krzysztof, > > +/* External sdcard */ > > +&mmc_2 { > > + status = "okay"; > > + bus-width = <4>; > > + cap-sd-highspeed; > > + card-detect-delay = <200>; > > + pinctrl-0 = <&sd2_clk &sd2_cmd &mmc2_cd &sd2_bus1 &sd2_bus4>; > > + pinctrl-names = "default"; > > + samsung,dw-mshc-ciu-div = <3>; > > + samsung,dw-mshc-ddr-timing = <0 2>; > > + samsung,dw-mshc-sdr-timing = <0 4>; > > + sd-uhs-sdr50; > > + vmmc-supply = <&ldo19_reg>; > > + vqmmc-supply = <&ldo13_reg>; > > +}; > > + > > +&pinctrl_0 { > > + mmc2_cd: sd2-cd-pins { > > + samsung,pins = "gpx2-4"; > > Interesting... I looked at vendor sources to board-chagall and standard > pin gpc2-2 is mentioned as PULL down and not-connected comment. > > gpx2-4 seems not mentioned at all, unless other board files are actually > used. Gpio seems to be spread out. GPIO_T_FLASH_DETECT is defined as gpx2-4 in board-universal5420-mmc.c, and then used for card detection. (Looking at it now again I see that write protection through sd2_wp should also be supported for mmc_2, can add that in next patch set.) > Anyway, if it works for you, it's good. > > Rest looks ok, I'll apply after the merge window. Thanks! > Best regards, > Krzysztof Best regards, Henrik Grimler
Hi Henrik, >-----Original Message----- >From: Henrik Grimler [mailto:henrik@grimler.se] >Sent: Monday, January 17, 2022 2:30 AM >To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> >Cc: semen.protsenko@linaro.org; virag.david003@gmail.com; >martin.juecker@gmail.com; cw00.choi@samsung.com; >m.szyprowski@samsung.com; alim.akhtar@samsung.com; >robh+dt@kernel.org; devicetree@vger.kernel.org; linux-samsung- >soc@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux- >kernel@vger.kernel.org; ~postmarketos/upstreaming@lists.sr.ht >Subject: Re: [PATCH v3 3/3] ARM: dts: Add support for Samsung Chagall WiFi > >Hi Krzysztof, > >> > +/* External sdcard */ >> > +&mmc_2 { >> > + status = "okay"; >> > + bus-width = <4>; >> > + cap-sd-highspeed; >> > + card-detect-delay = <200>; >> > + pinctrl-0 = <&sd2_clk &sd2_cmd &mmc2_cd &sd2_bus1 &sd2_bus4>; >> > + pinctrl-names = "default"; >> > + samsung,dw-mshc-ciu-div = <3>; >> > + samsung,dw-mshc-ddr-timing = <0 2>; >> > + samsung,dw-mshc-sdr-timing = <0 4>; >> > + sd-uhs-sdr50; >> > + vmmc-supply = <&ldo19_reg>; >> > + vqmmc-supply = <&ldo13_reg>; >> > +}; >> > + >> > +&pinctrl_0 { >> > + mmc2_cd: sd2-cd-pins { >> > + samsung,pins = "gpx2-4"; >> >> Interesting... I looked at vendor sources to board-chagall and >> standard pin gpc2-2 is mentioned as PULL down and not-connected >comment. >> >> gpx2-4 seems not mentioned at all, unless other board files are >> actually used. > >Gpio seems to be spread out. GPIO_T_FLASH_DETECT is defined as gpx2-4 in >board-universal5420-mmc.c, and then used for card detection. >(Looking at it now again I see that write protection through sd2_wp should >also be supported for mmc_2, can add that in next patch set.) > Card detect pin is generally a special function (dedicated pin) pin, directly connected from SoC to card external slot. And for exynos5420 it is gpc2-2 as pointed by Krzysztof. Also PIN_FUNC_2 for gpx2-4 indicate that it is wakeup_int2 function. Do you get a card detect interrupt when removing and inserting the card to the card slot? Also to avoid confusion, probably you can change the node name as "mmc2_cd: mmc2-cd-pins" (as sd2-cd-pins is gpc2-2 for this SoC) >> Anyway, if it works for you, it's good. >> >> Rest looks ok, I'll apply after the merge window. > >Thanks! > >> Best regards, >> Krzysztof > >Best regards, >Henrik Grimler
Hi Alim, > >> > +/* External sdcard */ > >> > +&mmc_2 { > >> > + status = "okay"; > >> > + bus-width = <4>; > >> > + cap-sd-highspeed; > >> > + card-detect-delay = <200>; > >> > + pinctrl-0 = <&sd2_clk &sd2_cmd &mmc2_cd &sd2_bus1 &sd2_bus4>; > >> > + pinctrl-names = "default"; > >> > + samsung,dw-mshc-ciu-div = <3>; > >> > + samsung,dw-mshc-ddr-timing = <0 2>; > >> > + samsung,dw-mshc-sdr-timing = <0 4>; > >> > + sd-uhs-sdr50; > >> > + vmmc-supply = <&ldo19_reg>; > >> > + vqmmc-supply = <&ldo13_reg>; > >> > +}; > >> > + > >> > +&pinctrl_0 { > >> > + mmc2_cd: sd2-cd-pins { > >> > + samsung,pins = "gpx2-4"; > >> > >> Interesting... I looked at vendor sources to board-chagall and > >> standard pin gpc2-2 is mentioned as PULL down and not-connected > >comment. > >> > >> gpx2-4 seems not mentioned at all, unless other board files are > >> actually used. > > > >Gpio seems to be spread out. GPIO_T_FLASH_DETECT is defined as gpx2-4 in > >board-universal5420-mmc.c, and then used for card detection. > >(Looking at it now again I see that write protection through sd2_wp should > >also be supported for mmc_2, can add that in next patch set.) > > > Card detect pin is generally a special function (dedicated pin) pin, > directly connected from SoC to card external slot. > And for exynos5420 it is gpc2-2 as pointed by Krzysztof. gpio/pinctrl is still not my area of expertise so your feedback is greatly appreciated! gpc2-2 does not seem to be the card-detect pin for these tablets. If I add sd2_cd to pinctrl-0 above I am unable to use the sdcard at all, instead dmesg is filled with repeating messages like: [ 18.669050] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 300000Hz, actual 297619HZ div = 84) [ 18.703711] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 200000Hz, actual 200000HZ div = 125) [ 18.737167] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 100000Hz, actual 100000HZ div = 250) [ 19.058352] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 400000Hz, actual 396825HZ div = 63) [ 19.093037] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 300000Hz, actual 297619HZ div = 84) [ 19.127701] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 200000Hz, actual 200000HZ div = 125) [ 19.162380] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 100000Hz, actual 100000HZ div = 250) gpx2-4 on the other hand switches state when an sdcard is inserted or removed. After exporting relevant pins I have, with the card inserted: # grep -A 2 gpx2 /sys/kernel/debug/gpio gpiochip3: GPIOs 24-31, parent: platform/13400000.pinctrl, gpx2: gpio-26 ( |Power ) in hi IRQ ACTIVE LOW gpio-28 ( |sysfs ) in lo and when removed gpx2-4 changes to high: gpiochip3: GPIOs 24-31, parent: platform/13400000.pinctrl, gpx2: gpio-26 ( |Power ) in hi IRQ ACTIVE LOW gpio-28 ( |sysfs ) in hi All the gpc2 pins are low no matter if sdcard is inserted or removed: gpiochip7: GPIOs 56-62, parent: platform/13410000.pinctrl, gpc2: gpio-56 ( |sysfs ) in lo gpio-57 ( |sysfs ) in lo gpio-58 ( |sysfs ) in lo gpio-59 ( |sysfs ) in lo gpio-60 ( |sysfs ) in lo gpio-61 ( |sysfs ) in lo gpio-62 ( |sysfs ) in lo That being said, I am not sure if it is working properly: > Also PIN_FUNC_2 for gpx2-4 indicate that it is wakeup_int2 function. > Do you get a card detect interrupt when removing and inserting the card to > the card slot? (What is the best way to check this?) I don't get any irq related messages in dmesg, and I don't see any changes in /proc/interrupts if tracked with something like `watch -n1 "cat /proc/interrupts"` when card is removed or inserted, so seems likely that pin config is wrong. All I can find in vendor kernel for this device is that pull config is set to S3C_GPIO_PULL_NONE [1]. For some of the sibling tablets the pin is configured as {S3C_GPIO_INPUT, GPIO_LV_N, S3C_GPIO_PULL_NONE} [2] though, which I think should correspond to having: mmc2_cd: mmc2-cd-pins { samsung,pins = "gpx2-4"; samsung,pin-function = <EXYNOS_PIN_FUNC_INPUT>; samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>; samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>; }; Changing to that does not seem to change anything though, I don't get any interrupt, or any messages in dmesg, when inserting or removing the sdcard. > Also to avoid confusion, probably you can change the node name as "mmc2_cd: > mmc2-cd-pins" > (as sd2-cd-pins is gpc2-2 for this SoC) Thanks, will fix in a v4 (after discussions here are settled). [1] https://github.com/exynos5420/android_kernel_samsung_exynos5420/blob/lineage-17.1/arch/arm/mach-exynos/board-universal5420-mmc.c#L388 [2] https://github.com/exynos5420/android_kernel_samsung_exynos5420/blob/lineage-17.1/arch/arm/mach-exynos/board-n1-gpio.c#L119 Best regards, Henrik Grimler
Hi Henrik >-----Original Message----- >From: Henrik Grimler [mailto:henrik@grimler.se] >Sent: Monday, January 17, 2022 10:28 PM >To: Alim Akhtar <alim.akhtar@samsung.com> >Cc: 'Krzysztof Kozlowski' <krzysztof.kozlowski@canonical.com>; >semen.protsenko@linaro.org; virag.david003@gmail.com; >martin.juecker@gmail.com; cw00.choi@samsung.com; >m.szyprowski@samsung.com; robh+dt@kernel.org; >devicetree@vger.kernel.org; linux-samsung-soc@vger.kernel.org; linux-arm- >kernel@lists.infradead.org; linux-kernel@vger.kernel.org; >~postmarketos/upstreaming@lists.sr.ht >Subject: Re: [PATCH v3 3/3] ARM: dts: Add support for Samsung Chagall WiFi > >Hi Alim, > >> >> > +/* External sdcard */ >> >> > +&mmc_2 { >> >> > + status = "okay"; >> >> > + bus-width = <4>; >> >> > + cap-sd-highspeed; >> >> > + card-detect-delay = <200>; >> >> > + pinctrl-0 = <&sd2_clk &sd2_cmd &mmc2_cd &sd2_bus1 >&sd2_bus4>; >> >> > + pinctrl-names = "default"; >> >> > + samsung,dw-mshc-ciu-div = <3>; >> >> > + samsung,dw-mshc-ddr-timing = <0 2>; >> >> > + samsung,dw-mshc-sdr-timing = <0 4>; >> >> > + sd-uhs-sdr50; >> >> > + vmmc-supply = <&ldo19_reg>; >> >> > + vqmmc-supply = <&ldo13_reg>; >> >> > +}; >> >> > + >> >> > +&pinctrl_0 { >> >> > + mmc2_cd: sd2-cd-pins { >> >> > + samsung,pins = "gpx2-4"; >> >> >> >> Interesting... I looked at vendor sources to board-chagall and >> >> standard pin gpc2-2 is mentioned as PULL down and not-connected >> >comment. >> >> >> >> gpx2-4 seems not mentioned at all, unless other board files are >> >> actually used. >> > >> >Gpio seems to be spread out. GPIO_T_FLASH_DETECT is defined as gpx2-4 >> >in board-universal5420-mmc.c, and then used for card detection. >> >(Looking at it now again I see that write protection through sd2_wp >> >should also be supported for mmc_2, can add that in next patch set.) >> > >> Card detect pin is generally a special function (dedicated pin) pin, >> directly connected from SoC to card external slot. >> And for exynos5420 it is gpc2-2 as pointed by Krzysztof. > >gpio/pinctrl is still not my area of expertise so your feedback is greatly >appreciated! > >gpc2-2 does not seem to be the card-detect pin for these tablets. If I add >sd2_cd to pinctrl-0 above I am unable to use the sdcard at all, instead dmesg is >filled with repeating messages like: > >[ 18.669050] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req >300000Hz, actual 297619HZ div = 84) [ 18.703711] mmc_host mmc1: Bus speed >(slot 0) = 50000000Hz (slot req 200000Hz, actual 200000HZ div = 125) [ >18.737167] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req >100000Hz, actual 100000HZ div = 250) [ 19.058352] mmc_host mmc1: Bus >speed (slot 0) = 50000000Hz (slot req 400000Hz, actual 396825HZ div = 63) [ >19.093037] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req >300000Hz, actual 297619HZ div = 84) [ 19.127701] mmc_host mmc1: Bus speed >(slot 0) = 50000000Hz (slot req 200000Hz, actual 200000HZ div = 125) [ >19.162380] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req >100000Hz, actual 100000HZ div = 250) > >gpx2-4 on the other hand switches state when an sdcard is inserted or >removed. After exporting relevant pins I have, with the card >inserted: > ># grep -A 2 gpx2 /sys/kernel/debug/gpio >gpiochip3: GPIOs 24-31, parent: platform/13400000.pinctrl, gpx2: > gpio-26 ( |Power ) in hi IRQ ACTIVE LOW > gpio-28 ( |sysfs ) in lo > >and when removed gpx2-4 changes to high: > >gpiochip3: GPIOs 24-31, parent: platform/13400000.pinctrl, gpx2: > gpio-26 ( |Power ) in hi IRQ ACTIVE LOW > gpio-28 ( |sysfs ) in hi > >All the gpc2 pins are low no matter if sdcard is inserted or removed: > >gpiochip7: GPIOs 56-62, parent: platform/13410000.pinctrl, gpc2: > gpio-56 ( |sysfs ) in lo > gpio-57 ( |sysfs ) in lo > gpio-58 ( |sysfs ) in lo > gpio-59 ( |sysfs ) in lo > gpio-60 ( |sysfs ) in lo > gpio-61 ( |sysfs ) in lo > gpio-62 ( |sysfs ) in lo > >That being said, I am not sure if it is working properly: > >> Also PIN_FUNC_2 for gpx2-4 indicate that it is wakeup_int2 function. >> Do you get a card detect interrupt when removing and inserting the >> card to the card slot? > This is the confirmation that this board does not uses gpc2-2 but gpx2-4. Thanks for detailed log. >(What is the best way to check this?) I don't get any irq related messages in Probably if you are interested, you can enable few debug in dw-mmc driver to check a message like "card is present" etc. >dmesg, and I don't see any changes in /proc/interrupts if tracked with >something like `watch -n1 "cat /proc/interrupts"` when card is removed or >inserted, so seems likely that pin config is wrong. >All I can find in vendor kernel for this device is that pull config is set to >S3C_GPIO_PULL_NONE [1]. For some of the sibling tablets the pin is >configured as {S3C_GPIO_INPUT, GPIO_LV_N, S3C_GPIO_PULL_NONE} [2] >though, which I think should correspond to having: > >mmc2_cd: mmc2-cd-pins { > samsung,pins = "gpx2-4"; > samsung,pin-function = <EXYNOS_PIN_FUNC_INPUT>; > samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>; > samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV3>; }; > >Changing to that does not seem to change anything though, I don't get any >interrupt, or any messages in dmesg, when inserting or removing the sdcard. > >> Also to avoid confusion, probably you can change the node name as >"mmc2_cd: >> mmc2-cd-pins" >> (as sd2-cd-pins is gpc2-2 for this SoC) > >Thanks, will fix in a v4 (after discussions here are settled). > I am convinced that gpc2-2 is not used for card detect for this board. So no other query on this patch. Thanks >[1] https://protect2.fireeye.com/v1/url?k=bba823ae-dad5cbe9-bba9a8e1- >74fe485fff30-b4ccbbe9776f501d&q=1&e=9951c78c-16c8-449e-913b- >d4d1f1f9bb6b&u=https%3A%2F%2Fgithub.com%2Fexynos5420%2Fandroid_k >ernel_samsung_exynos5420%2Fblob%2Flineage- >17.1%2Farch%2Farm%2Fmach-exynos%2Fboard-universal5420- >mmc.c%23L388 >[2] https://protect2.fireeye.com/v1/url?k=97465c6e-f63bb429-9747d721- >74fe485fff30-4111389a6d2b68b4&q=1&e=9951c78c-16c8-449e-913b- >d4d1f1f9bb6b&u=https%3A%2F%2Fgithub.com%2Fexynos5420%2Fandroid_k >ernel_samsung_exynos5420%2Fblob%2Flineage- >17.1%2Farch%2Farm%2Fmach-exynos%2Fboard-n1-gpio.c%23L119 > >Best regards, >Henrik Grimler
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 0de64f237cd8..088fcedb3212 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -220,6 +220,7 @@ dtb-$(CONFIG_ARCH_EXYNOS5) += \ exynos5420-arndale-octa.dtb \ exynos5420-peach-pit.dtb \ exynos5420-smdk5420.dtb \ + exynos5420-chagall-wifi.dtb \ exynos5422-odroidhc1.dtb \ exynos5422-odroidxu3.dtb \ exynos5422-odroidxu3-lite.dtb \ diff --git a/arch/arm/boot/dts/exynos5420-chagall-wifi.dts b/arch/arm/boot/dts/exynos5420-chagall-wifi.dts new file mode 100644 index 000000000000..2cc5cd01e8c6 --- /dev/null +++ b/arch/arm/boot/dts/exynos5420-chagall-wifi.dts @@ -0,0 +1,65 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Samsung's Exynos5420 Chagall WiFi board device tree source + * + * Copyright (c) 2012-2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * Copyright (c) 2022 Henrik Grimler + */ + +/dts-v1/; +#include "exynos5420-galaxy-tab-common.dtsi" + +/ { + model = "Samsung Chagall WiFi based on Exynos5420"; + compatible = "samsung,chagall-wifi", "samsung,exynos5420", \ + "samsung,exynos5"; +}; + +&ldo15_reg { + /* Unused */ + regulator-name = "VDD_LDO15"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; +}; + +&ldo17_reg { + regulator-name = "VDD_IRLED_3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3350000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; +}; + +&ldo28_reg { + /* Unused */ + regulator-name = "VDD_LDO28"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; +}; + +&ldo29_reg { + regulator-name = "VDD_TCON_1V8"; + regulator-min-microvolt = <1900000>; + regulator-max-microvolt = <1900000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; +}; + +&ldo31_reg { + regulator-name = "VDD_GRIP_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; +}; diff --git a/arch/arm/boot/dts/exynos5420-galaxy-tab-common.dtsi b/arch/arm/boot/dts/exynos5420-galaxy-tab-common.dtsi new file mode 100644 index 000000000000..119e4e7a8328 --- /dev/null +++ b/arch/arm/boot/dts/exynos5420-galaxy-tab-common.dtsi @@ -0,0 +1,666 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Base DT for Samsung's family of tablets based on Exynos5420. + * + * Copyright (c) 2012-2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * Copyright (c) 2022 Henrik Grimler + */ + +/dts-v1/; +#include "exynos5420.dtsi" +#include "exynos5420-cpus.dtsi" +#include <dt-bindings/input/input.h> +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/clock/samsung,s2mps11.h> + +/ { + chassis-type = "tablet"; + + /* + * To successfully boot the mainline kernel with the stock + * bootloader (SBOOT), the tlb needs to be flushed after the + * page table pointer has been updated in __common_mmu_cache_on. + * The same hack is also needed to boot exynos4412-i9300 with + * stock bootloader, and probably other Samsung devices of + * similar age. See + * https://lore.kernel.org/all/1355276466-18295-1-git-send-email-arve@android.com + * for more details. + */ + + chosen { + stdout-path = "serial2:115200n8"; + }; + + memory@20000000 { + device_type = "memory"; + reg = <0x20000000 0xc0000000>; + }; + + firmware@2073000 { + compatible = "samsung,secure-firmware"; + reg = <0x02073000 0x1000>; + }; + + fixed-rate-clocks { + oscclk { + compatible = "samsung,exynos5420-oscclk"; + clock-frequency = <24000000>; + }; + }; + + gpio-keys { + compatible = "gpio-keys"; + pinctrl-names = "default"; + + key-power { + debounce-interval = <10>; + gpios = <&gpx2 2 GPIO_ACTIVE_LOW>; + label = "Power"; + linux,code = <KEY_POWER>; + wakeup-source; + }; + + key-home { + debounce-interval = <10>; + gpios = <&gpx0 5 GPIO_ACTIVE_LOW>; + label = "Home"; + linux,code = <KEY_HOME>; + wakeup-source; + }; + + key-volume-up { + debounce-interval = <10>; + gpios = <&gpx0 2 GPIO_ACTIVE_LOW>; + label = "Volume Up"; + linux,code = <KEY_VOLUMEUP>; + }; + + key-volume-down { + debounce-interval = <10>; + gpios = <&gpx0 3 GPIO_ACTIVE_LOW>; + label = "Volume Down"; + linux,code = <KEY_VOLUMEDOWN>; + }; + }; +}; + +&cci { + /* CCI is disabled in hardware */ + status = "disabled"; +}; + +&cpu0 { + cpu-supply = <&buck2_reg>; +}; + +&cpu4 { + cpu-supply = <&buck6_reg>; +}; + +&gpu { + status = "okay"; + mali-supply = <&buck4_reg>; +}; + +&hsi2c_7 { + status = "okay"; + + pmic@66 { + compatible = "samsung,s2mps11-pmic"; + reg = <0x66>; + + interrupt-parent = <&gpx3>; + interrupts = <2 IRQ_TYPE_LEVEL_LOW>; + pinctrl-names = "default"; + pinctrl-0 = <&s2mps11_irq>; + + s2mps11_osc: clocks { + compatible = "samsung,s2mps11-clk"; + #clock-cells = <1>; + clock-output-names = "s2mps11_ap", "s2mps11_cp", + "s2mps11_bt"; + }; + + regulators { + buck1_reg: BUCK1 { + regulator-name = "VDD_MIF_1V1"; + regulator-min-microvolt = <700000>; + regulator-max-microvolt = <1300000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + buck2_reg: BUCK2 { + regulator-name = "VDD_ARM_1V0"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <1500000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + buck3_reg: BUCK3 { + regulator-name = "VDD_INT_1V0"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <1400000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + buck4_reg: BUCK4 { + regulator-name = "VDD_G3D_1V0"; + regulator-min-microvolt = <700000>; + regulator-max-microvolt = <1400000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + buck5_reg: BUCK5 { + regulator-name = "VDD_MEM_1V2"; + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1200000>; + regulator-always-on; + regulator-boot-on; + }; + + buck6_reg: BUCK6 { + regulator-name = "VDD_KFC_1V0"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <1500000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + buck7_reg: BUCK7 { + regulator-name = "VIN_LLDO_1V4"; + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1500000>; + regulator-always-on; + }; + + buck8_reg: BUCK8 { + regulator-name = "VIN_MLDO_2V0"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <2100000>; + regulator-always-on; + }; + + buck9_reg: BUCK9 { + regulator-name = "VIN_HLDO_3V5"; + regulator-min-microvolt = <3000000>; + regulator-max-microvolt = <3500000>; + regulator-always-on; + }; + + buck10_reg: BUCK10 { + regulator-name = "VDD_CAM_ISP_1V0"; + regulator-min-microvolt = <750000>; + regulator-max-microvolt = <3550000>; + }; + + ldo1_reg: LDO1 { + regulator-name = "VDD_ALIVE_1.0V"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1000000>; + regulator-always-on; + }; + + ldo2_reg: LDO2 { + regulator-name = "VDD_APIO_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + regulator-boot-on; + }; + + ldo3_reg: LDO3 { + regulator-name = "VDD_APIO_MMC01_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo4_reg: LDO4 { + regulator-name = "VDD_ADC_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + regulator-boot-on; + }; + + ldo5_reg: LDO5 { + /* Unused */ + regulator-name = "VDD_LDO5"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + ldo6_reg: LDO6 { + regulator-name = "VDD_MIPI_1V0"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1000000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo7_reg: LDO7 { + regulator-name = "VDD_MIPI_PLL_ABB1_18V"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo8_reg: LDO8 { + /* Unused */ + regulator-name = "VDD_LDO8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + ldo9_reg: LDO9 { + regulator-name = "VDD_UOTG_3V0"; + regulator-min-microvolt = <3000000>; + regulator-max-microvolt = <3000000>; + regulator-always-on; + regulator-boot-on; + }; + + ldo10_reg: LDO10 { + regulator-name = "VDDQ_PRE_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + regulator-boot-on; + }; + + ldo11_reg: LDO11 { + regulator-name = "VDD_HSIC_1V0"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1000000>; + regulator-always-on; + regulator-boot-on; + }; + + ldo12_reg: LDO12 { + regulator-name = "VDD_HSIC_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + regulator-boot-on; + }; + + ldo13_reg: LDO13 { + regulator-name = "VDD_APIO_MMC2_2V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <2800000>; + regulator-boot-on; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo14_reg: LDO14 { + regulator-name = "VDD_MOTOR_3V0"; + regulator-min-microvolt = <3000000>; + regulator-max-microvolt = <3000000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo15_reg: LDO15 { + regulator-name = "LDO15"; + /* + * LDO15 varies between devices and is + * specified in the device dts + */ + }; + + ldo16_reg: LDO16 { + regulator-name = "VDD_AP_2V8"; + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + regulator-always-on; + regulator-boot-on; + + regulator-state-mem { + regulator-on-in-suspend; + }; + }; + + ldo17_reg: LDO17 { + regulator-name = "LDO17"; + /* + * LDO17 varies between devices and is + * specified in the device dts + */ + }; + + ldo18_reg: LDO18 { + /* Unused */ + regulator-name = "VDD_LDO18"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + + ldo19_reg: LDO19 { + regulator-name = "VDD_VTF_2V8"; + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo20_reg: LDO20 { + regulator-name = "VDD_CAM1_CAM_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo21_reg: LDO21 { + regulator-name = "VDD_CAM_IO_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo22_reg: LDO22 { + regulator-name = "VDD_CAM0_S_CORE_1V1"; + regulator-min-microvolt = <1050000>; + regulator-max-microvolt = <1200000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo23_reg: LDO23 { + regulator-name = "VDD_MIFS_1V1"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <1100000>; + regulator-always-on; + + regulator-state-mem { + regulator-on-in-suspend; + }; + }; + + ldo24_reg: LDO24 { + regulator-name = "VDD_TSP_3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo25_reg: LDO25 { + /* Unused */ + regulator-name = "VDD_LDO25"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <3950000>; + }; + + ldo26_reg: LDO26 { + regulator-name = "VDD_CAM0_AF_2V8"; + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo27_reg: LDO27 { + regulator-name = "VDD_G3DS_1V0"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <1000000>; + regulator-always-on; + + regulator-state-mem { + regulator-on-in-suspend; + }; + }; + + ldo28_reg: LDO28 { + regulator-name = "LDO28"; + /* + * LDO28 varies between devices and is + * specified in the device dts + */ + }; + + ldo29_reg: LDO29 { + regulator-name = "LDO29"; + /* + * LDO29 varies between devices and is + * specified in the device dts + */ + }; + + ldo30_reg: LDO30 { + regulator-name = "VDD_TOUCH_1V8"; + regulator-min-microvolt = <1900000>; + regulator-max-microvolt = <1900000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo31_reg: LDO31 { + regulator-name = "LDO31"; + /* + * LDO31 varies between devices and is + * specified in the device dts + */ + }; + + ldo32_reg: LDO32 { + regulator-name = "VDD_TSP_1V8"; + regulator-min-microvolt = <1900000>; + regulator-max-microvolt = <1900000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo33_reg: LDO33 { + regulator-name = "VDD_MHL_1V8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo34_reg: LDO34 { + regulator-name = "VDD_MHL_3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo35_reg: LDO35 { + regulator-name = "VDD_SIL_1V2"; + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1200000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + ldo36_reg: LDO36 { + /* Unused */ + regulator-name = "VDD_LDO36"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <3950000>; + }; + + ldo37_reg: LDO37 { + /* Unused */ + regulator-name = "VDD_LDO37"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <3950000>; + }; + + ldo38_reg: LDO38 { + regulator-name = "VDD_KEY_LED_3V3"; + regulator-min-microvolt = <2500000>; + regulator-max-microvolt = <3300000>; + + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + }; + }; +}; + +&mixer { + status = "okay"; +}; + +/* Internal storage */ +&mmc_0 { + status = "okay"; + bus-width = <8>; + cap-mmc-highspeed; + card-detect-delay = <200>; + mmc-hs200-1_8v; + non-removable; + pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus1 &sd0_bus4 &sd0_bus8>; + pinctrl-names = "default"; + samsung,dw-mshc-ciu-div = <3>; + samsung,dw-mshc-ddr-timing = <0 2>; + samsung,dw-mshc-sdr-timing = <0 4>; + vqmmc-supply = <&ldo3_reg>; +}; + +/* External sdcard */ +&mmc_2 { + status = "okay"; + bus-width = <4>; + cap-sd-highspeed; + card-detect-delay = <200>; + pinctrl-0 = <&sd2_clk &sd2_cmd &mmc2_cd &sd2_bus1 &sd2_bus4>; + pinctrl-names = "default"; + samsung,dw-mshc-ciu-div = <3>; + samsung,dw-mshc-ddr-timing = <0 2>; + samsung,dw-mshc-sdr-timing = <0 4>; + sd-uhs-sdr50; + vmmc-supply = <&ldo19_reg>; + vqmmc-supply = <&ldo13_reg>; +}; + +&pinctrl_0 { + mmc2_cd: sd2-cd-pins { + samsung,pins = "gpx2-4"; + samsung,pin-function = <EXYNOS_PIN_FUNC_2>; + samsung,pin-pud = <EXYNOS_PIN_PULL_UP>; + samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV4>; + }; + + s2mps11_irq: s2mps11-irq-pins { + samsung,pins = "gpx3-0"; + samsung,pin-function = <EXYNOS_PIN_FUNC_F>; + samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>; + samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>; + }; +}; + +&rtc { + status = "okay"; + clocks = <&clock CLK_RTC>, <&s2mps11_osc S2MPS11_CLK_AP>; + clock-names = "rtc", "rtc_src"; +}; + +&tmu_cpu0 { + vtmu-supply = <&ldo10_reg>; +}; + +&tmu_cpu1 { + vtmu-supply = <&ldo10_reg>; +}; + +&tmu_cpu2 { + vtmu-supply = <&ldo10_reg>; +}; + +&tmu_cpu3 { + vtmu-supply = <&ldo10_reg>; +}; + +&tmu_gpu { + vtmu-supply = <&ldo10_reg>; +}; + +&usbdrd_dwc3_0 { + dr_mode = "peripheral"; +}; + +&usbdrd_dwc3_1 { + dr_mode = "peripheral"; +}; + +&usbdrd3_0 { + vdd33-supply = <&ldo9_reg>; + vdd10-supply = <&ldo11_reg>; +}; + +&usbdrd3_1 { + vdd33-supply = <&ldo9_reg>; + vdd10-supply = <&ldo11_reg>; +};
Chagall WiFi, with product name Samsung Galaxy Tab S 10.5", is based on Exynos 5420. This device is one of several tablet models released in 2014 based on Exynos 5420. The device tree added here contains support for: - UART - eMMC - SD card - USB CCI has been disabled in the hardware, enabling it would require (de-)soldering a resistor on the board. Trying to boot with it enabled in kernel makes the device hang when CCI is probed. Exynos5420-arndale-octa also has had CCI disabled due to issues, see commit 25217fef3551 ("ARM: dts: disable CCI on exynos5420 based arndale-octa"). Signed-off-by: Henrik Grimler <henrik@grimler.se> --- arch/arm/boot/dts/Makefile | 1 + arch/arm/boot/dts/exynos5420-chagall-wifi.dts | 65 ++ .../dts/exynos5420-galaxy-tab-common.dtsi | 666 ++++++++++++++++++ 3 files changed, 732 insertions(+) create mode 100644 arch/arm/boot/dts/exynos5420-chagall-wifi.dts create mode 100644 arch/arm/boot/dts/exynos5420-galaxy-tab-common.dtsi