wip: adc gpio buttons

Author: pari-pacc

arch/arm64/boot/dts/rockchip/rk3399-nanopi4-common.dtsi

@@ -330,6 +330,33 @@
 			gpio-key,wakeup = <1>;
 			debounce-interval = <100>;
 		};
+
+		button@1 {
+			gpios = <&gpio1 1 GPIO_ACTIVE_LOW>; /* GPIO1_A1 */
+			linux,code = <KEY_F1>;
+			label = "GPIO Button 1";
+			linux,input-type = <1>;
+			gpio-key,wakeup = <1>;
+			debounce-interval = <100>;
+		};
+
+		button@2 {
+			gpios = <&gpio1 3 GPIO_ACTIVE_LOW>; /* GPIO1_A3 */
+			linux,code = <KEY_F2>;
+			label = "GPIO Button 2";
+			linux,input-type = <1>;
+			gpio-key,wakeup = <1>;
+			debounce-interval = <100>;
+		};
+
+		button@3 {
+			gpios = <&gpio1 4 GPIO_ACTIVE_LOW>; /* GPIO1_A4 */
+			linux,code = <KEY_F3>;
+			label = "GPIO Button 3";
+			linux,input-type = <1>;
+			gpio-key,wakeup = <1>;
+			debounce-interval = <100>;
+		};
 	};
 
 	adc_keys: adc-keys {