ARM: dts: ux500: Add device tree for Samsung Galaxy S III mini (GT-I8190)
The Samsung Galaxy S III mini (GT-I8190) is a smartphone with Ux500 SoC released in 2012. Thanks to the great mainline support for Ux500, it can actually run mainline Linux quite well. Add a new device tree for it with support for: - Internal Storage (eMMC) - External Storage (Micro SD card) - UART - GPIO Buttons - Vibrator Note that the device tree cannot be booted directly with the original (Samsung) bootloader. It keeps the L2 cache turned on, which causes the kernel to hang shortly after decompression. As a workaround I have created a port of (mainline) U-Boot, which locks the L2 cache before booting Linux. At the moment it does not replace the Samsung bootloader, instead we let the original bootloader load U-Boot as an another (intermediate) bootloader. Another advantage of this is that U-Boot has proper device tree support, so we do not need to hardcode the kernel command line in the device tree. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20191219202052.19039-5-stephan@gerhold.net Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Stephan Gerhold
Linus Walleij
parent
92ac62e1c3
commit
b952efeb7a
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@ -1183,7 +1183,8 @@ dtb-$(CONFIG_ARCH_U8500) += \
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ste-hrefprev60-tvk.dtb \
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ste-hrefv60plus-stuib.dtb \
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ste-hrefv60plus-tvk.dtb \
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ste-href520-tvk.dtb
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ste-href520-tvk.dtb \
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ste-ux500-samsung-golden.dtb
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dtb-$(CONFIG_ARCH_UNIPHIER) += \
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uniphier-ld4-ref.dtb \
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uniphier-ld6b-ref.dtb \
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@ -0,0 +1,304 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/dts-v1/;
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#include "ste-db8500.dtsi"
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#include "ste-ab8505.dtsi"
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#include "ste-dbx5x0-pinctrl.dtsi"
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/input/input.h>
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/*
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* Note: This device tree cannot be booted directly with the Samsung bootloader.
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* You need an intermediate, device-tree compatible bootloader
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* that locks the L2 cache. Otherwise the kernel will crash after decompression.
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*
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* There is a port of (mainline) U-Boot, see
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* https://wiki.postmarketos.org/wiki/ST-Ericsson_NovaThor_U8500#U-Boot
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*/
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/ {
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model = "Samsung Galaxy S III mini (GT-I8190)";
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compatible = "samsung,golden", "st-ericsson,u8500";
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chosen {
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stdout-path = &serial2;
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};
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soc {
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/* External Micro SD card slot */
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sdi0_per1@80126000 {
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status = "okay";
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arm,primecell-periphid = <0x10480180>;
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max-frequency = <100000000>;
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bus-width = <4>;
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non-removable;
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/*
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* Unfortunately, there is no way to enable the UHS
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* modes due to a limitation of the SD level translator:
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* It will either translate to 2.9V or disconnect the
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* DATA lines, so switching to 1.8V signal voltage fails.
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*/
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cap-sd-highspeed;
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cap-mmc-highspeed;
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st,sig-pin-fbclk;
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full-pwr-cycle;
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vmmc-supply = <&ab8500_ldo_aux3_reg>;
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vqmmc-supply = <&sd_level_translator>;
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&mc0_a_2_default>;
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pinctrl-1 = <&mc0_a_2_sleep>;
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};
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/* WLAN SDIO */
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sdi1_per2@80118000 {
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status = "okay";
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arm,primecell-periphid = <0x10480180>;
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max-frequency = <50000000>;
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bus-width = <4>;
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non-removable;
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cap-sd-highspeed;
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&mc1_a_2_default>;
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pinctrl-1 = <&mc1_a_2_sleep>;
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};
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/* eMMC */
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sdi2_per3@80005000 {
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status = "okay";
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arm,primecell-periphid = <0x10480180>;
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max-frequency = <100000000>;
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bus-width = <8>;
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non-removable;
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cap-mmc-highspeed;
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mmc-ddr-1_8v;
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vmmc-supply = <&vmem_3v3>;
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&mc2_a_1_default>;
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pinctrl-1 = <&mc2_a_1_sleep>;
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};
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/* BT UART */
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uart@80120000 {
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status = "okay";
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&u0_a_1_default>;
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pinctrl-1 = <&u0_a_1_sleep>;
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};
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/* GPF UART */
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uart@80121000 {
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status = "okay";
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&u1rxtx_a_1_default &u1ctsrts_a_1_default>;
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pinctrl-1 = <&u1rxtx_a_1_sleep &u1ctsrts_a_1_sleep>;
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};
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/* Debugging console UART */
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uart@80007000 {
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status = "okay";
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&u2rxtx_c_1_default>;
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pinctrl-1 = <&u2rxtx_c_1_sleep>;
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};
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prcmu@80157000 {
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ab8505 {
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ab8500_usb {
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&usb_a_1_default>;
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pinctrl-1 = <&usb_a_1_sleep>;
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};
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ab8505-regulators {
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ab8500_ldo_aux1 {
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regulator-name = "sensor_3v";
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regulator-min-microvolt = <3000000>;
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regulator-max-microvolt = <3000000>;
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};
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ab8500_ldo_aux2 {
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regulator-name = "vreg_tsp_a3v3";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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};
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ab8500_ldo_aux3 {
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regulator-name = "vdd_tf_2v91";
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};
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ab8500_ldo_aux4 {
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regulator-name = "key_led_3.3v";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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};
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ab8500_ldo_aux5 {
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regulator-name = "vreg_tsp_1v8";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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};
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ab8500_ldo_aux6 {
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regulator-name = "touch_key_2.2v";
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regulator-min-microvolt = <2200000>;
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regulator-max-microvolt = <2200000>;
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};
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ab8500_ldo_aux8 {
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regulator-name = "sensor_1v8";
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};
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};
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};
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};
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};
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gpio-keys {
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compatible = "gpio-keys";
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pinctrl-names = "default";
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pinctrl-0 = <&gpio_keys_default>;
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label = "GPIO Buttons";
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volume-up {
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label = "Volume Up";
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/* GPIO67 (VOL_UP) */
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gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
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linux,code = <KEY_VOLUMEUP>;
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};
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volume-down {
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label = "Volume Down";
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/* GPIO92 (VOL_DOWN) */
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gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
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linux,code = <KEY_VOLUMEDOWN>;
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};
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home {
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label = "Home";
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/* GPIO91 (HOME_KEY) */
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gpios = <&gpio2 27 GPIO_ACTIVE_LOW>;
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linux,code = <KEY_HOMEPAGE>;
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};
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};
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vibrator {
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compatible = "gpio-vibrator";
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/* GPIO195 (MOT_EN) */
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enable-gpios = <&gpio6 3 GPIO_ACTIVE_HIGH>;
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pinctrl-names = "default";
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pinctrl-0 = <&vibrator_default>;
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};
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/* External LDO for eMMC */
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vmem_3v3: regulator-vmem {
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compatible = "regulator-fixed";
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regulator-name = "vmem_3v3";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-boot-on;
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startup-delay-us = <200>;
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/* GPIO223 (MEM_LDO_EN) */
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gpio = <&gpio6 31 GPIO_ACTIVE_HIGH>;
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enable-active-high;
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pinctrl-names = "default";
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pinctrl-0 = <&mem_ldo_default>;
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};
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/* TI TXS0206-29 level translator for 2.9 V */
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sd_level_translator: regulator-sd-level-translator {
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compatible = "regulator-fixed";
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regulator-name = "sd-level-translator";
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regulator-min-microvolt = <2900000>;
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regulator-max-microvolt = <2900000>;
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startup-delay-us = <200>;
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/* GPIO87 (TXS0206-29_EN) */
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gpios = <&gpio2 23 GPIO_ACTIVE_HIGH>;
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enable-active-high;
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pinctrl-names = "default";
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pinctrl-0 = <&sd_level_translator_default>;
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};
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};
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&pinctrl {
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gpio-keys {
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gpio_keys_default: gpio_keys_default {
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golden_cfg1 {
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pins = "GPIO67", /* VOL_UP */
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"GPIO91", /* HOME_KEY */
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"GPIO92"; /* VOL_DOWN */
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ste,config = <&gpio_in_pu>;
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};
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};
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};
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sdi0 {
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sd_level_translator_default: sd_level_translator_default {
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golden_cfg1 {
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pins = "GPIO87_B3"; /* TXS0206-29_EN */
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ste,config = <&gpio_out_lo>;
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};
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};
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};
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sdi2 {
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mem_ldo_default: mem_ldo_default {
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golden_cfg1 {
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pins = "GPIO223_AH9"; /* MEM_LDO_EN */
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ste,config = <&gpio_out_hi>;
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};
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};
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};
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vibrator {
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vibrator_default: vibrator_default {
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golden_cfg1 {
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pins = "GPIO195_AG28"; /* MOT_EN */
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ste,config = <&gpio_out_lo>;
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};
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};
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};
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};
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&ab8505_gpio {
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/* Hog a few default settings */
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pinctrl-names = "default";
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pinctrl-0 = <&gpio_default>;
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gpio {
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gpio_default: gpio_default {
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golden_mux {
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/* Change unused pins to GPIO mode */
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function = "gpio";
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groups = "gpio3_a_1", /* default: SysClkReq4 */
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"gpio14_a_1"; /* default: PWMOut1 */
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};
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golden_cfg1 {
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pins = "GPIO11_B17", "GPIO13_D17", "GPIO50_L4";
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bias-disable;
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};
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};
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};
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};
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