The dts and dtsi add support for msm8916 variant of Samsung Galaxy J3
SM-J320YZ smartphone released in 2016.

Add a device tree for SM-J320YZ with initial support for:

- GPIO keys
- SDHCI (internal and external storage)
- USB Device Mode
- UART (on USB connector via the SM5703 MUIC)
- WCNSS (WiFi/BT)
- Regulators
- QDSP6 audio
- Speaker/earpiece/headphones/microphones via digital/analog codec in
  MSM8916/PM8916
- WWAN Internet via BAM-DMUX
- Touchscreen

There are different variants of J3, with some differences in MUIC, sensor,
NFC and touch key I2C buses.

The common parts are shared in msm8916-samsung-j3-common.dtsi to reduce
duplication.

Document samsung,j3ltetw bindings used in its device tree.

Signed-off-by: "Lin, Meng-Bo" <linmengbo06890@proton.me>
---
 Documentation/devicetree/bindings/arm/qcom.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/qcom.yaml b/Documentation/devicetree/bindings/arm/qcom.yaml
index 4ef456cefd6c..c0529486810f 100644
--- a/Documentation/devicetree/bindings/arm/qcom.yaml
+++ b/Documentation/devicetree/bindings/arm/qcom.yaml
@@ -235,6 +235,7 @@ properties:
               - samsung,grandprimelte
               - samsung,gt510
               - samsung,gt58
+              - samsung,j3ltetw
               - samsung,j5
               - samsung,j5x
               - samsung,rossa
-- 
2.39.2

The dts and dtsi add support for msm8916 variant of Samsung Galaxy J3
SM-J320YZ smartphone released in 2016.

Add a device tree for SM-J320YZ with initial support for:

- GPIO keys
- SDHCI (internal and external storage)
- USB Device Mode
- UART (on USB connector via the SM5703 MUIC)
- WCNSS (WiFi/BT)
- Regulators
- QDSP6 audio
- Speaker/earpiece/headphones/microphones via digital/analog codec in
  MSM8916/PM8916
- WWAN Internet via BAM-DMUX
- Touchscreen

There are different variants of J3, with some differences in MUIC, sensor,
NFC and touch key I2C buses.

The common parts are shared in msm8916-samsung-j3-common.dtsi to reduce
duplication.

Signed-off-by: "Lin, Meng-Bo" <linmengbo06890@proton.me>
---
 arch/arm64/boot/dts/qcom/Makefile             |  1 +
 .../dts/qcom/msm8916-samsung-j3-common.dtsi   | 53 +++++++++++++++++++
 .../boot/dts/qcom/msm8916-samsung-j3ltetw.dts | 20 +++++++
 3 files changed, 74 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/msm8916-samsung-j3-common.dtsi
 create mode 100644 arch/arm64/boot/dts/qcom/msm8916-samsung-j3ltetw.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index e534442620a1..197ab325c0b9 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -48,6 +48,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-grandmax.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-grandprimelte.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-gt510.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-gt58.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-j3ltetw.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-j5.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-j5x.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-rossa.dtb
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-j3-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-j3-common.dtsi
new file mode 100644
index 000000000000..ce5c1ee450f1
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-j3-common.dtsi
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "msm8916-samsung-j5-common.dtsi"
+
+/ {
+	reserved-memory {
+		/delete-node/ tz-apps@85500000;
+
+		/* Additional memory used by Samsung firmware modifications */
+		tz-apps@85800000 {
+			reg = <0x0 0x85800000 0x0 0x800000>;
+			no-map;
+		};
+	};
+
+	reg_vdd_tsp_a: regulator-vdd-tsp-a {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_tsp_a";
+		regulator-min-microvolt = <3000000>;
+		regulator-max-microvolt = <3000000>;
+
+		gpio = <&tlmm 16 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&tsp_ldo_en_default>;
+		pinctrl-names = "default";
+	};
+};
+
+&gpio_hall_sensor {
+	status = "disabled";
+};
+
+&i2c_muic {
+	/* GPIO pins vary depending on model variant */
+};
+
+&i2c_sensors {
+	/* GPIO pins vary depending on model variant */
+};
+
+&touchscreen {
+	vdd-supply = <&reg_vdd_tsp_a>;
+};
+
+&tlmm {
+	tsp_ldo_en_default: tsp-ldo-en-default-state {
+		pins = "gpio16";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+};
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-j3ltetw.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-j3ltetw.dts
new file mode 100644
index 000000000000..344e63588531
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-j3ltetw.dts
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/dts-v1/;
+
+#include "msm8916-samsung-j3-common.dtsi"
+
+/ {
+	model = "Samsung Galaxy J3 (2016) (SM-J320YZ)";
+	compatible = "samsung,j3ltetw", "qcom,msm8916";
+	chassis-type = "handset";
+};
+
+&i2c_muic {
+	sda-gpios = <&tlmm 0 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+	scl-gpios = <&tlmm 1 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+};
+
+&muic_i2c_default {
+	pins = "gpio0", "gpio1";
+};
-- 
2.39.2