[PATCH 2/2] arm64: dts: qcom: sm7125-samsung: add grip sensor

[Erikas Bitovtas <xerikasxx@gmail.com>]

Samsung Galaxy A52 and A72 use a Semtech SX9360 SAR sensor to detect if
the phone has been gripped. Add this sensor to the device tree
configuration.

No I2C bus is being muxed on GPIOs 51 and 52 on SM7125, so we bit-bang
instead.

Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
---
 .../arm64/boot/dts/qcom/sm7125-samsung-common.dtsi | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
index 5685755a44f6..52fe06303294 100644
--- a/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm7125-samsung-common.dtsi
@@ -60,6 +60,39 @@ event-hall-sensor {
 		};
 	};
 
+	i2c-grip {
+		compatible = "i2c-gpio";
+		sda-gpios = <&tlmm 51 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&tlmm 52 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+
+		i2c-gpio,delay-us = <2>;
+
+		pinctrl-0 = <&grip_sensor_i2c_default>;
+		pinctrl-names = "default";
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		grip-sensor@28 {
+			compatible = "semtech,sx9360";
+			reg = <0x28>;
+
+			interrupts-extended = <&pm6150l_gpios 5 IRQ_TYPE_EDGE_FALLING>;
+
+			vdd-supply = <&vreg_l5a_2p7>;
+			svdd-supply = <&vreg_l8c_1p8>;
+
+			pinctrl-0 = <&grip_sensor_int_default>;
+			pinctrl-names = "default";
+
+			semtech,resolution = <1024>;
+			semtech,proxraw-strength = <2>;
+			semtech,avg-pos-strength = <512>;
+
+			#io-channel-cells = <1>;
+		};
+	};
+
 	reserved-memory {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -379,6 +412,14 @@ &dispcc {
 };
 
 &pm6150l_gpios {
+	grip_sensor_int_default: grip-sensor-int-default-state {
+		pins = "gpio5";
+		function = "normal";
+		power-source = <0>;
+		input-enable;
+		bias-disable;
+	};
+
 	key_vol_up_default: key-vol-up-default-state {
 		pins = "gpio8";
 		function = "normal";
@@ -434,6 +475,12 @@ &sdhc_2 {
 &tlmm {
 	gpio-reserved-ranges = <59 4>; /* Fingerprint sensor SPI */
 
+	grip_sensor_i2c_default: grip-sensor-i2c-default-state {
+		pins = "gpio51", "gpio52";
+		function = "gpio";
+		bias-disable;
+	};
+
 	sdc2_on: sdc2-on-state {
 		clk-pins {
 			pins = "sdc2_clk";

-- 
2.56.1