31 lines
1.1 KiB
Plaintext
31 lines
1.1 KiB
Plaintext
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Generic resistive touchscreen ADC
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Required properties:
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- compatible: must be "resistive-adc-touch"
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The device must be connected to an ADC device that provides channels for
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position measurement and optional pressure.
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Refer to ../iio/iio-bindings.txt for details
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- iio-channels: must have at least two channels connected to an ADC device.
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These should correspond to the channels exposed by the ADC device and should
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have the right index as the ADC device registers them. These channels
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represent the relative position on the "x" and "y" axes.
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- iio-channel-names: must have all the channels' names. Mandatory channels
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are "x" and "y".
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Optional properties:
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- iio-channels: The third channel named "pressure" is optional and can be
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used if the ADC device also measures pressure besides position.
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If this channel is missing, pressure will be ignored and the touchscreen
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will only report position.
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- iio-channel-names: optional channel named "pressure".
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Example:
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resistive_touch: resistive_touch {
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compatible = "resistive-adc-touch";
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touchscreen-min-pressure = <50000>;
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io-channels = <&adc 24>, <&adc 25>, <&adc 26>;
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io-channel-names = "x", "y", "pressure";
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};
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