8235ef155d
The iio-bindings.txt was converted into two files and merged
at the dt-schema git tree at:
https://github.com/devicetree-org/dt-schema
Yet, some documents still refer to the old file. Fix their
references, in order to point to the right URL.
Fixes: dba91f82d5 ("dt-bindings:iio:iio-binding.txt Drop file as content now in dt-schema")
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/4efd81eca266ca0875d3bf9d1672097444146c69.1617972339.git.mchehab+huawei@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
33 lines
1.2 KiB
Text
33 lines
1.2 KiB
Text
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
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https://github.com/devicetree-org/dt-schema/blob/master/schemas/iio/iio-consumer.yaml
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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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