Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
[sfrench/cifs-2.6.git] / Documentation / devicetree / bindings / input / gpio-decoder.txt
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         };