Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) ROCKCHIP ADC attached resistor ladder buttons
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) ------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  - compatible: "rockchip,key"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  - io-channels: Phandle to an ADC channel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) Each button (key) is represented as a sub-node of "rockchip,key":
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) Required subnode-properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	- label: Descriptive name of the key.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	- linux,code: Keycode to emit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	- rockchip,adc_value:: Voltage ADC input when this key is pressed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <dt-bindings/input/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	rk_key: rockchip-key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		compatible = "rockchip,key";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		status = "okay";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		io-channels = <&saradc 1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		vol-up-key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 			linux,code = <115>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 			label = "volume up";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 			rockchip,adc_value = <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		vol-down-key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 			linux,code = <114>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 			label = "volume down";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 			rockchip,adc_value = <170>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		power-key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 			gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 			linux,code = <116>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 			pinctrl-names = "default";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 			pinctrl-0 = <&pwrbtn>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 			label = "power";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 			gpio-key,wakeup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		menu-key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 			linux,code = <59>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 			label = "menu";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 			rockchip,adc_value = <355>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		home-key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 			linux,code = <102>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 			label = "home";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 			rockchip,adc_value = <746>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 		back-key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 			linux,code = <158>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 			label = "back";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 			rockchip,adc_value = <560>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 		camera-key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 			linux,code = <212>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 			label = "camera";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 			rockchip,adc_value = <450>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	};