overlay examples: GPIO keys Mainline Linux OrangePi
gpio-keys.dts
/dts-v1/;
/plugin/;
/ {
compatible = "allwinner,sun4i-a10", "allwinner,sun7i-a20", "allwinner,sun8i-h3", "allwinner,sun50i-a64", "allwinner,sun50i-h5";
fragment@0 {
target = <&pio>;
__overlay__ {
gpio_keys: gpio_keys {
pins = "PA7","PA8","PA9","PA10","PA21";
function = "gpio_in";
bias-pull-up;
};
};
};
fragment@1 {
target-path = "/";
__overlay__ {
gpio-keys-user {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&gpio_keys>;
g-