* GPIO Decoder DT bindings Required Properties: - compatible: should be "gpio-decoder" - gpios: a spec of gpios (at least two) to be decoded to a number with first entry representing the MSB. Optional Properties: - decoder-max-value: Maximum possible value that can be reported by the gpios. - linux,axis: the input subsystem axis to map to (ABS_X/ABS_Y). Defaults to 0 (ABS_X). Example: gpio-decoder0 { compatible = "gpio-decoder"; gpios = <&pca9536 3 GPIO_ACTIVE_HIGH>, <&pca9536 2 GPIO_ACTIVE_HIGH>, <&pca9536 1 GPIO_ACTIVE_HIGH>, <&pca9536 0 GPIO_ACTIVE_HIGH>; linux,axis = <0>; /* ABS_X */ decoder-max-value = <9>; };