| Message ID | 20210517125909.12024-3-o.rempel@pengutronix.de |
|---|---|
| State | Superseded |
| Headers | show |
| Series | add pressure calculation support for resistive-adc-touch driver | expand |
diff --git a/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.yaml b/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.yaml index 53df21a6589e..538c3b1ef1e1 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.yaml +++ b/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.yaml @@ -43,6 +43,7 @@ properties: touchscreen-inverted-y: true touchscreen-swapped-x-y: true touchscreen-min-pressure: true + touchscreen-x-plate-ohms: true additionalProperties: false @@ -59,3 +60,11 @@ examples: io-channels = <&adc 24>, <&adc 25>, <&adc 26>; io-channel-names = "x", "y", "pressure"; }; + - | + resistive_touch { + compatible = "resistive-adc-touch"; + touchscreen-min-pressure = <50000>; + io-channels = <&adc 1>, <&adc 2>, <&adc 3>, <&adc 4>; + io-channel-names = "x", "y", "z1", "z2"; + touchscreen-x-plate-ohms = <800>; + };
For pressure calculation based on plates resistance we need some additional properties: - z1 and z2 channels with additional measurements between plates - actual resistance of the touchscreen. Currently we use only X-resistance. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> --- .../bindings/input/touchscreen/resistive-adc-touch.yaml | 9 +++++++++ 1 file changed, 9 insertions(+)