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KEY1/KEY2 are on LRADC channel 0 (measured ~1.0 V / ~1.6 V) and are wired to KEY_1 / KEY_ENTER; the IR receiver is on the SoC ir controller (PH10). Tested on: OrangePi Zero 2W (Allwinner H618). Signed-off-by: Vladnwx --- --- a/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts @@ -10,6 +10,7 @@ #include #include +#include #include / { @@ -189,3 +190,31 @@ usb1_vbus-supply = <®_vcc5v>; status = "okay"; }; + +/* + * Buttons and IR receiver on the optional 24-pin expansion board. + * KEY1 -> KEY_1, KEY2 -> KEY_ENTER (LRADC channel 0). + */ +&lradc { + vref-supply = <®_vcc3v3>; + status = "okay"; + wakeup-source; + + button-1000 { + label = "KEY_1"; + linux,code = ; + channel = <0>; + voltage = <1000000>; + }; + + button-1600 { + label = "KEY_ENTER"; + linux,code = ; + channel = <0>; + voltage = <1600000>; + }; +}; + +&ir { + status = "okay"; +}; -- 2.45.0