gpio-decoder.txt

 1* GPIO Decoder DT bindings
 2
 3Required Properties:
 4- compatible: should be "gpio-decoder"
 5- gpios: a spec of gpios (at least two) to be decoded to a number with
 6  first entry representing the MSB.
 7
 8Optional Properties:
 9- decoder-max-value: Maximum possible value that can be reported by
10  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	};