arm64: dts: qcom: sc7280: Add volume up support for sc7280-idp

Add pm7325 PMIC gpio support for vol+ on sc7280-idp.
Signed-off-by: satya priya <skakit@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631877040-26587-1-git-send-email-skakit@codeaurora.org

arch/arm64/boot/dts/qcom/sc7280-idp.dtsi

@@ -7,11 +7,32 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/iio/qcom,spmi-adc7-pmk8350.h>
+#include <dt-bindings/input/linux-event-codes.h>
 #include "sc7280.dtsi"
 #include "pm7325.dtsi"
 #include "pm8350c.dtsi"
 #include "pmk8350.dtsi"
 
+/ {
+	gpio-keys {
+		compatible = "gpio-keys";
+		label = "gpio-keys";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&key_vol_up_default>;
+
+		volume-up {
+			label = "volume_up";
+			gpios = <&pm7325_gpios 6 GPIO_ACTIVE_LOW>;
+			linux,input-type = <1>;
+			linux,code = <KEY_VOLUMEUP>;
+			gpio-key,wakeup;
+			debounce-interval = <15>;
+			linux,can-disable;
+		};
+	};
+};
+
 &apps_rsc {
 	pm7325-regulators {
 		compatible = "qcom,pm7325-rpmh-regulators";
@@ -288,6 +309,17 @@ &usb_2_hsphy {
 
 /* PINCTRL - additions to nodes defined in sc7280.dtsi */
 
+&pm7325_gpios {
+	key_vol_up_default: key-vol-up-default {
+		pins = "gpio6";
+		function = "normal";
+		input-enable;
+		bias-pull-up;
+		power-source = <0>;
+		qcom,drive-strength = <3>;
+	};
+};
+
 &qup_uart5_default {
 	tx {
 		pins = "gpio46";