[PATCH 1/4] arm64: dts: qcom: Add device tree for Xiaomi Redmi 2 (wingtech-wt88047)

[PATCH 1/4] arm64: dts: qcom: Add device tree for Xiaomi Redmi 2 (wingtech-wt88047)

[Stephan Gerhold]

The Xiaomi Redmi 2 is a MSM8916 smartphone that was made by Wingtech
(codename: wt88047). It's fairly similar to the other MSM8916 devices.

The device tree contains initial support for the Xiaomi Redmi 2 with:
  - UART (untested, probably available via some test points)
  - eMMC/SD card
  - Buttons
  - Vibrator
  - WiFi/Bluetooth (WCNSS)
  - USB

Note that the Xiaomi Redmi 2 is available in variants with different
names (e.g. Redmi 2 Prime, Redmi 2 Pro, ...). As far as I know the main
difference between those is the amount of RAM and supported LTE bands.
This difference is automatically handled by bootloader/modem firmware
so there is no need for separate device trees.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
The reason this is GPL-2.0-only instead of BSD is the same as for
huawei-g7, see https://lore.kernel.org/linux-arm-msm/YMIznk4scPv1qOzP@gerhold.net/
---
 arch/arm64/boot/dts/qcom/Makefile             |   1 +
 .../dts/qcom/msm8916-wingtech-wt88047.dts     | 208 ++++++++++++++++++
 2 files changed, 209 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 4f0597091976..a571bfdddd61 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -15,6 +15,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-longcheer-l8910.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-a3u-eur.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-a5u-eur.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-wingtech-wt88047.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-bullhead-rev-101.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-msft-lumia-octagon-talkman.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-xiaomi-libra.dtb
diff --git a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
new file mode 100644
index 000000000000..5ee35a9b7dc6
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
@@ -0,0 +1,208 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (C) 2020 Stephan Gerhold
+
+/dts-v1/;
+
+#include "msm8916-pm8916.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Xiaomi Redmi 2 (Wingtech WT88047)";
+	compatible = "wingtech,wt88047", "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>;
+		};
+	};
+
+	usb_id: usb-id {
+		compatible = "linux,extcon-usb-gpio";
+		id-gpio = <&msmgpio 110 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>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off>;
+
+	non-removable;
+};
+
+&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 = <2850000>;
+		regulator-max-microvolt = <2900000>;
+	};
+
+	l9 {
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	l10 {
+		regulator-min-microvolt = <2700000>;
+		regulator-max-microvolt = <2800000>;
+	};
+
+	l11 {
+		regulator-min-microvolt = <2950000>;
+		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 = <2800000>;
+		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;
+	};
+
+	usb_id_default: usb-id-default {
+		pins = "gpio110";
+		function = "gpio";
+
+		drive-strength = <8>;
+		bias-pull-up;
+	};
+};
-- 
2.32.0

[PATCH 2/4] arm64: dts: qcom: msm8916-wingtech-wt88047: Add touchscreen

[Stephan Gerhold]

The Xiaomi Redmi 2 has a FocalTech touchscreen. The exact model is
not mentioned anywhere, but it works just fine with the mainline
edt-ft5x06 driver when using the "edt,edt-ft5506" compatible.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
 .../dts/qcom/msm8916-wingtech-wt88047.dts     | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
index 5ee35a9b7dc6..a4d8d6ff2289 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
@@ -42,6 +42,30 @@ usb_id: usb-id {
 	};
 };
 
+&blsp_i2c5 {
+	status = "okay";
+
+	touchscreen@38 {
+		/* Likely some other model but works just fine with this one */
+		compatible = "edt,edt-ft5506";
+		reg = <0x38>;
+
+		interrupt-parent = <&msmgpio>;
+		interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+		reset-gpios = <&msmgpio 12 GPIO_ACTIVE_LOW>;
+
+		vcc-supply = <&pm8916_l17>;
+		iovcc-supply = <&pm8916_l6>;
+
+		touchscreen-size-x = <720>;
+		touchscreen-size-y = <1280>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&touchscreen_default>;
+	};
+};
+
 &blsp1_uart2 {
 	status = "okay";
 };
@@ -198,6 +222,22 @@ gpio_keys_default: gpio-keys-default {
 		bias-pull-up;
 	};
 
+	touchscreen_default: touchscreen-default {
+		pins = "gpio13";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-pull-up;
+
+		reset {
+			pins = "gpio12";
+			function = "gpio";
+
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
+
 	usb_id_default: usb-id-default {
 		pins = "gpio110";
 		function = "gpio";
-- 
2.32.0

[PATCH 3/4] arm64: dts: qcom: msm8916-wingtech-wt88047: Add notification LED

[Stephan Gerhold]

The Xiaomi Redmi 2 has a notification LED connected to an Awinic
AW2013 controller, add it to the device tree.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
 .../dts/qcom/msm8916-wingtech-wt88047.dts     | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
index a4d8d6ff2289..9d9e85e75411 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
@@ -6,6 +6,7 @@
 #include "msm8916-pm8916.dtsi"
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
 
 / {
 	model = "Xiaomi Redmi 2 (Wingtech WT88047)";
@@ -66,6 +67,40 @@ touchscreen@38 {
 	};
 };
 
+&blsp_i2c6 {
+	status = "okay";
+
+	led-controller@45 {
+		compatible = "awinic,aw2013";
+		reg = <0x45>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		vcc-supply = <&pm8916_l16>;
+
+		led@0 {
+			reg = <0>;
+			led-max-microamp = <15000>;
+			function = LED_FUNCTION_INDICATOR;
+			color = <LED_COLOR_ID_RED>;
+		};
+
+		led@1 {
+			reg = <1>;
+			led-max-microamp = <15000>;
+			function = LED_FUNCTION_INDICATOR;
+			color = <LED_COLOR_ID_GREEN>;
+		};
+
+		led@2 {
+			reg = <2>;
+			led-max-microamp = <15000>;
+			function = LED_FUNCTION_INDICATOR;
+			color = <LED_COLOR_ID_BLUE>;
+		};
+	};
+};
+
 &blsp1_uart2 {
 	status = "okay";
 };
-- 
2.32.0

[PATCH 4/4] arm64: dts: qcom: msm8916-wingtech-wt88047: Add IMU

[Stephan Gerhold]

The Xiaomi Redmi 2 has an InvenSense MPU-6880 supported by the
inv_mpu6050 driver in Linux. Add it to the device tree.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
 .../dts/qcom/msm8916-wingtech-wt88047.dts     | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
index 9d9e85e75411..4e20cc0008f7 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
@@ -43,6 +43,28 @@ usb_id: usb-id {
 	};
 };
 
+&blsp_i2c2 {
+	status = "okay";
+
+	imu@68 {
+		compatible = "invensense,mpu6880";
+		reg = <0x68>;
+
+		interrupt-parent = <&msmgpio>;
+		interrupts = <115 IRQ_TYPE_EDGE_RISING>;
+
+		vdd-supply = <&pm8916_l17>;
+		vddio-supply = <&pm8916_l6>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&imu_default>;
+
+		mount-matrix = "1",  "0", "0",
+			       "0", "-1", "0",
+			       "0",  "0", "1";
+	};
+};
+
 &blsp_i2c5 {
 	status = "okay";
 
@@ -257,6 +279,14 @@ gpio_keys_default: gpio-keys-default {
 		bias-pull-up;
 	};
 
+	imu_default: imu-default {
+		pins = "gpio115";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	touchscreen_default: touchscreen-default {
 		pins = "gpio13";
 		function = "gpio";
-- 
2.32.0