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23 lines
651 B
23 lines
651 B
* 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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