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