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// Definitions for gpio-key module
/dts-v1/;
/plugin/;
/ {
compatible = "brcm,bcm2835";
fragment@0 {
// Configure the gpio pin controller
target = <&gpio>;
__overlay__ {
pin_state: button_pins@0 {
brcm,pins = <3>; // gpio number
brcm,function = <0>; // 0 = input, 1 = output
brcm,pull = <2>; // 0 = none, 1 = pull down, 2 = pull up
};
};
};
fragment@1 {
target-path = "/";
__overlay__ {
button: button@0 {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&pin_state>;
status = "okay";
key: key {
linux,code = <116>;
gpios = <&gpio 3 1>;
label = "KEY_POWER";
};
};
};
};
__overrides__ {
gpio = <&key>,"gpios:4",
<&button>,"reg:0",
<&pin_state>,"brcm,pins:0",
<&pin_state>,"reg:0";
label = <&key>,"label";
keycode = <&key>,"linux,code:0";
gpio_pull = <&pin_state>,"brcm,pull:0";
active_low = <&key>,"gpios:8";
};
};
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