gpio-decoder.txt

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    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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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/input/gpio-decoder.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/input/gpio-decoder.txt