Add support for phone buttons.

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
---
 .../boot/dts/qcom/sdm845-samsung-starqltechn.dts   | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-samsung-starqltechn.dts b/arch/arm64/boot/dts/qcom/sdm845-samsung-starqltechn.dts
index 5948b401165c..a3bd5231569d 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-samsung-starqltechn.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-samsung-starqltechn.dts
@@ -7,9 +7,11 @@
 
 /dts-v1/;
 
+#include <dt-bindings/input/linux-event-codes.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 #include "sdm845.dtsi"
+#include "pm8998.dtsi"
 
 / {
 	chassis-type = "handset";
@@ -69,6 +71,25 @@ memory@a1300000 {
 			pmsg-size = <0x40000>;
 		};
 	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+		autorepeat;
+
+		key-vol-up {
+			label = "volume_up";
+			gpios = <&pm8998_gpios 6 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEUP>;
+			debounce-interval = <15>;
+		};
+
+		key-wink {
+			label = "key_wink";
+			gpios = <&pm8998_gpios 19 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_ENTER>;
+			debounce-interval = <15>;
+		};
+	};
 };
 
 
@@ -417,6 +438,21 @@ &usb_1_qmpphy {
 	status = "okay";
 };
 
+&pm8998_resin {
+	linux,code = <KEY_VOLUMEDOWN>;
+	status = "okay";
+};
+
+&pm8998_gpios {
+	chg_int_default: chg-int-default-state {
+		pins = "gpio11";
+		function = "normal";
+		input-enable;
+		bias-disable;
+		power-source = <0>;
+	};
+};
+
 &tlmm {
 	gpio-reserved-ranges = <27 4>, /* SPI (eSE - embedded Secure Element) */
 			       <85 4>; /* SPI (fingerprint reader) */

-- 
2.39.2