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android_kernel_motorola_sm6225/bindings/input/gpio-decoder.txt
T
Venkata Narendra Kumar Gutta ed241f1327 dt-bindings: Add devicetree bindings to devicetree project
Add devicetree bindings snapshot to the devicetree project.
This snapshot is taken as of
'commit f3dd4aaeb3 (Merge
"platform: qpnp-revid: Add REVID support for PM7250B")' of
the kernel project.

Change-Id: I5e0ec0eae63ff9c071b2924bd84c5b20d3f6554d
2019-05-02 16:41:24 -07:00

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* 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>;
};