[PATCH 2/8] arm64: dts: qcom: msm8939-samsung-a7: Add initial dts

[Lin, Meng-Bo]

This dts adds support for Samsung Galaxy A7 smartphone released in 2015.

Add a device tree for A7 with initial support for:

- GPIO keys
- Hall Sensor
- SDHCI (internal and external storage)
- USB Device Mode
- UART (on USB connector via the SM5502 MUIC)
- WCNSS (WiFi/BT)
- Regulators

Signed-off-by: Lin, Meng-Bo <linmengbo0689@xxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/Makefile             |   1 +
 .../boot/dts/qcom/msm8939-samsung-a7.dts      | 163 ++++++++++++++++++
 2 files changed, 164 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 337abc4ceb17..23fd31d4bf5a 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -39,6 +39,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-thwc-uf896.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-thwc-ufi001c.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-wingtech-wt88047.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-yiming-uz801v3.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= msm8939-samsung-a7.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8939-sony-xperia-kanuti-tulip.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8953-motorola-potter.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8953-xiaomi-daisy.dtb
diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
new file mode 100644
index 000000000000..cf2738bc3313
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/dts-v1/;
+
+#include "msm8939-pm8916.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+	model = "Samsung Galaxy A7 (2015)";
+	compatible = "samsung,a7", "qcom,msm8939";
+	chassis-type = "handset";
+
+	aliases {
+		mmc0 = &sdhc_1; /* SDC1 eMMC slot */
+		mmc1 = &sdhc_2; /* SDC2 SD card slot */
+		serial0 = &blsp_uart2;
+	};
+
+	chosen {
+		stdout-path = "serial0";
+	};
+
+	reserved-memory {
+		/* Additional memory used by Samsung firmware modifications */
+		tz-apps@85500000 {
+			reg = <0x0 0x85500000 0x0 0xb00000>;
+			no-map;
+		};
+	};
+
+	gpio-hall-sensor {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&gpio_hall_sensor_default>;
+		pinctrl-names = "default";
+
+		label = "GPIO Hall Effect Sensor";
+
+		event-hall-sensor {
+			label = "Hall Effect Sensor";
+			gpios = <&tlmm 52 GPIO_ACTIVE_LOW>;
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_LID>;
+			linux,can-disable;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&gpio_keys_default>;
+		pinctrl-names = "default";
+
+		label = "GPIO Buttons";
+
+		button-volume-up {
+			label = "Volume Up";
+			gpios = <&tlmm 107 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEUP>;
+		};
+
+		button-home {
+			label = "Home";
+			gpios = <&tlmm 109 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_HOMEPAGE>;
+		};
+	};
+};
+
+&blsp_i2c1 {
+	status = "okay";
+
+	muic: extcon@25 {
+		compatible = "siliconmitus,sm5502-muic";
+		reg = <0x25>;
+
+		interrupt-parent = <&tlmm>;
+		interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
+
+		pinctrl-0 = <&muic_int_default>;
+		pinctrl-names = "default";
+	};
+};
+
+&blsp_uart2 {
+	status = "okay";
+};
+
+&pm8916_resin {
+	linux,code = <KEY_VOLUMEDOWN>;
+	status = "okay";
+};
+
+&pm8916_rpm_regulators {
+	pm8916_l17: l17 {
+		regulator-min-microvolt = <2850000>;
+		regulator-max-microvolt = <2850000>;
+	};
+};
+
+&sdhc_1 {
+	status = "okay";
+};
+
+&sdhc_2 {
+	pinctrl-0 = <&sdc2_default &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_sleep &sdc2_cd_default>;
+	pinctrl-names = "default", "sleep";
+
+	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
+
+	status = "okay";
+};
+
+&usb {
+	extcon = <&muic>, <&muic>;
+	status = "okay";
+};
+
+&usb_hs_phy {
+	extcon = <&muic>;
+};
+
+&wcnss {
+	status = "okay";
+};
+
+&wcnss_iris {
+	compatible = "qcom,wcn3660b";
+};
+
+&tlmm {
+	gpio_hall_sensor_default: gpio-hall-sensor-default-state {
+		pins = "gpio52";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	gpio_keys_default: gpio-keys-default-state {
+		pins = "gpio107", "gpio109";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+
+	muic_int_default: muic-int-default-state {
+		pins = "gpio12";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+};
-- 
2.39.2