mirror of https://gitee.com/openkylin/linux.git
24 lines
651 B
Plaintext
24 lines
651 B
Plaintext
|
* 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>;
|
||
|
|
};
|