[PATCH 12/16] arm64: dts: qcom: sm8550-aim300: enable PMIC Volume and Power buttons

[Tengfei Fan]

The Volume Down & Power buttons are controlled by the PMIC via the PON
hardware, and the Volume Up is connected to a PMIC gpio.

Enable the necessary hardware and setup the GPIO state for the Volume Up
gpio key.

Signed-off-by: Tengfei Fan <quic_tengfan@xxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/sm8550-aim300.dts | 37 ++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8550-aim300.dts b/arch/arm64/boot/dts/qcom/sm8550-aim300.dts
index 40132073038d..c3f49527b9ad 100644
--- a/arch/arm64/boot/dts/qcom/sm8550-aim300.dts
+++ b/arch/arm64/boot/dts/qcom/sm8550-aim300.dts
@@ -56,6 +56,22 @@
 		stdout-path = "serial0:115200n8";
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&volume_up_n>;
+		pinctrl-names = "default";
+
+		key-volume-up {
+			label = "Volume Up";
+			debounce-interval = <15>;
+			gpios = <&pm8550_gpios 6 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEUP>;
+			linux,can-disable;
+			wakeup-source;
+		};
+	};
+
 	pmic-glink {
 		compatible = "qcom,sm8550-pmic-glink", "qcom,pmic-glink";
 		#address-cells = <1>;
@@ -517,6 +533,16 @@
 	};
 };
 
+&pm8550_gpios {
+	volume_up_n: volume-up-n-state {
+		pins = "gpio6";
+		function = "normal";
+		power-source = <1>;
+		bias-pull-up;
+		input-enable;
+	};
+};
+
 &pm8550_pwm {
 	status = "okay";
 
@@ -549,6 +575,17 @@
 	vdd3-supply = <&vreg_l5b_3p1>;
 };
 
+
+&pon_pwrkey {
+	status = "okay";
+};
+
+&pon_resin {
+	linux,code = <KEY_VOLUMEDOWN>;
+
+	status = "okay";
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };
-- 
2.17.1