24 lines
651 B
Plaintext
24 lines
651 B
Plaintext
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* GPIO Decoder DT bindings
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Required Properties:
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- compatible: should be "gpio-decoder"
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- gpios: a spec of gpios (at least two) to be decoded to a number with
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first entry representing the MSB.
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Optional Properties:
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- decoder-max-value: Maximum possible value that can be reported by
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the gpios.
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- linux,axis: the input subsystem axis to map to (ABS_X/ABS_Y).
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Defaults to 0 (ABS_X).
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Example:
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gpio-decoder0 {
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compatible = "gpio-decoder";
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gpios = <&pca9536 3 GPIO_ACTIVE_HIGH>,
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<&pca9536 2 GPIO_ACTIVE_HIGH>,
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<&pca9536 1 GPIO_ACTIVE_HIGH>,
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<&pca9536 0 GPIO_ACTIVE_HIGH>;
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linux,axis = <0>; /* ABS_X */
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decoder-max-value = <9>;
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};
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