#include #include / { gpio-keys { compatible = "gpio-keys"; power { label = "Power"; gpios = <&gpio TEGRA_GPIO(Q, 0) GPIO_ACTIVE_LOW>; linux,code = ; gpio-key,wakeup; }; home { label = "Home"; gpios = <&tca6416 1 GPIO_ACTIVE_LOW>; linux,code = ; }; volume_down { label = "Volume Down"; gpios = <&tca6416 5 GPIO_ACTIVE_LOW>; linux,code = ; }; volume_up { label = "Volume Up"; gpios = <&tca6416 4 GPIO_ACTIVE_LOW>; linux,code = ; }; }; };