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Message-ID: <ca8c4613-a058-6cde-f9e6-8530f142a821@canonical.com>
Date: Sun, 16 Jan 2022 18:37:15 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To: Henrik Grimler <henrik@...mler.se>, semen.protsenko@...aro.org,
virag.david003@...il.com, martin.juecker@...il.com,
cw00.choi@...sung.com, m.szyprowski@...sung.com,
alim.akhtar@...sung.com, robh+dt@...nel.org,
devicetree@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH v3 3/3] ARM: dts: Add support for Samsung Chagall WiFi
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@...mler.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@...00000 {
> + device_type = "memory";
> + reg = <0x20000000 0xc0000000>;
> + };
> +
> + firmware@...3000 {
> + 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
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