--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (C) 2021 Stephan Gerhold
+
+/dts-v1/;
+
+#include "msm8916-pm8916.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/*
+ * Note: The original firmware from Huawei can only boot 32-bit kernels.
+ * To boot arm64 kernels it is necessary to flash 64-bit TZ/HYP firmware
+ * with EDL, e.g. taken from the DragonBoard 410c. This works because Huawei
+ * forgot to set up (firmware) secure boot for some reason.
+ *
+ * Also note that Huawei no longer provides bootloader unlock codes.
+ * This can be bypassed by patching the bootloader from a custom HYP firmware,
+ * making it think the bootloader is unlocked.
+ *
+ * See: https://wiki.postmarketos.org/wiki/Huawei_Ascend_G7_(huawei-g7)
+ */
+
+/ {
+ model = "Huawei Ascend G7";
+ compatible = "huawei,g7", "qcom,msm8916";
+
+ aliases {
+ serial0 = &blsp1_uart2;
+ };
+
+ chosen {
+ stdout-path = "serial0";
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&gpio_keys_default>;
+
+ label = "GPIO Buttons";
+
+ volume-up {
+ label = "Volume Up";
+ gpios = <&msmgpio 107 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_VOLUMEUP>;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&gpio_leds_default>;
+
+ led-0 {
+ gpios = <&msmgpio 8 GPIO_ACTIVE_HIGH>;
+ color = <LED_COLOR_ID_RED>;
+ default-state = "off";
+ function = LED_FUNCTION_INDICATOR;
+ };
+
+ led-1 {
+ gpios = <&msmgpio 9 GPIO_ACTIVE_HIGH>;
+ color = <LED_COLOR_ID_GREEN>;
+ default-state = "off";
+ function = LED_FUNCTION_INDICATOR;
+ };
+
+ led-2 {
+ gpios = <&msmgpio 10 GPIO_ACTIVE_HIGH>;
+ color = <LED_COLOR_ID_BLUE>;
+ default-state = "off";
+ function = LED_FUNCTION_INDICATOR;
+ };
+ };
+
+ usb_id: usb-id {
+ compatible = "linux,extcon-usb-gpio";
+ id-gpio = <&msmgpio 117 GPIO_ACTIVE_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&usb_id_default>;
+ };
+};
+
+&blsp1_uart2 {
+ status = "okay";
+};
+
+&pm8916_resin {
+ status = "okay";
+ linux,code = <KEY_VOLUMEDOWN>;
+};
+
+&pm8916_vib {
+ status = "okay";
+};
+
+&pronto {
+ status = "okay";
+};
+
+&sdhc_1 {
+ status = "okay";
+
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&sdc1_clk_on &sdc1_cmd_on &sdc1_data_on>;
+ pinctrl-1 = <&sdc1_clk_off &sdc1_cmd_off &sdc1_data_off>;
+};
+
+&sdhc_2 {
+ status = "okay";
+
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdhc2_cd_default>;
+ pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdhc2_cd_default>;
+
+ /*
+ * The Huawei device tree sets cd-gpios = <&msmgpio 38 GPIO_ACTIVE_HIGH>.
+ * However, gpio38 does not change its state when inserting/removing the
+ * SD card, it's just low all the time. The Huawei kernel seems to use
+ * polling for SD card detection instead.
+ *
+ * However, looking closer at the GPIO debug output it turns out that
+ * gpio56 switches its state when inserting/removing the SD card.
+ * It behaves just like gpio38 normally does. Usually GPIO56 is used as
+ * "UIM2_PRESENT", i.e. to check if a second SIM card is inserted.
+ * Maybe Huawei decided to replace the second SIM card slot with the
+ * SD card slot and forgot to re-route to gpio38.
+ */
+ cd-gpios = <&msmgpio 56 GPIO_ACTIVE_LOW>;
+};
+
+&usb {
+ status = "okay";
+ extcon = <&usb_id>, <&usb_id>;
+};
+
+&usb_hs_phy {
+ extcon = <&usb_id>;
+};
+
+&smd_rpm_regulators {
+ vdd_l1_l2_l3-supply = <&pm8916_s3>;
+ vdd_l4_l5_l6-supply = <&pm8916_s4>;
+ vdd_l7-supply = <&pm8916_s4>;
+
+ s3 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1300000>;
+ };
+
+ s4 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <2100000>;
+ };
+
+ l1 {
+ regulator-min-microvolt = <1225000>;
+ regulator-max-microvolt = <1225000>;
+ };
+
+ l2 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ };
+
+ l4 {
+ regulator-min-microvolt = <2050000>;
+ regulator-max-microvolt = <2050000>;
+ };
+
+ l5 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ l6 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ l7 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ l8 {
+ regulator-min-microvolt = <2950000>;
+ regulator-max-microvolt = <2950000>;
+ };
+
+ l9 {
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ l10 {
+ regulator-min-microvolt = <2700000>;
+ regulator-max-microvolt = <2800000>;
+ };
+
+ l11 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <2950000>;
+ regulator-allow-set-load;
+ regulator-system-load = <200000>;
+ };
+
+ l12 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <2950000>;
+ };
+
+ l13 {
+ regulator-min-microvolt = <3075000>;
+ regulator-max-microvolt = <3075000>;
+ };
+
+ l14 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ l15 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ l16 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ l17 {
+ regulator-min-microvolt = <2850000>;
+ regulator-max-microvolt = <2850000>;
+ };
+
+ l18 {
+ regulator-min-microvolt = <2700000>;
+ regulator-max-microvolt = <2700000>;
+ };
+};
+
+&msmgpio {
+ gpio_keys_default: gpio-keys-default {
+ pins = "gpio107";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+
+ gpio_leds_default: gpio-leds-default {
+ pins = "gpio8", "gpio9", "gpio10";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ sdhc2_cd_default: sdhc2-cd-default {
+ pins = "gpio56";
+ function = "gpio";
+
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ usb_id_default: usb-id-default {
+ pins = "gpio117";
+ function = "gpio";
+
+ drive-strength = <8>;
+ bias-pull-up;
+ };
+};
projects / linux.git / commitdiff