1 * GPIO Decoder DT bindings
2
3 Required 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
8 Optional 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
14 Example:
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 };
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