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1* GPIO Decoder DT bindings2 3Required Properties:4- compatible: should be "gpio-decoder"5- gpios: a spec of gpios (at least two) to be decoded to a number with6 first entry representing the MSB.7 8Optional Properties:9- decoder-max-value: Maximum possible value that can be reported by10 the gpios.11- linux,axis: the input subsystem axis to map to (ABS_X/ABS_Y).12 Defaults to 0 (ABS_X).13 14Example:15 gpio-decoder0 {16 compatible = "gpio-decoder";17 gpios = <&pca9536 3 GPIO_ACTIVE_HIGH>,18 <&pca9536 2 GPIO_ACTIVE_HIGH>,19 <&pca9536 1 GPIO_ACTIVE_HIGH>,20 <&pca9536 0 GPIO_ACTIVE_HIGH>;21 linux,axis = <0>; /* ABS_X */22 decoder-max-value = <9>;23 };24