[PATCH 04/14] dt-bindings: input: touchscreen: sama5d2_rts: create bindings
From: Eugen Hristev <eugen.hristev@microchip.com>
Date: 2017-12-22 15:10:06
Also in:
linux-arm-kernel, linux-devicetree, linux-iio, lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Added bindings for Microchip SAMA5D2 resistive touchscreen. Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> --- .../bindings/input/touchscreen/sama5d2_rts.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/sama5d2_rts.txt
diff --git a/Documentation/devicetree/bindings/input/touchscreen/sama5d2_rts.txt b/Documentation/devicetree/bindings/input/touchscreen/sama5d2_rts.txt
new file mode 100644
index 0000000..ea52a5c
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/sama5d2_rts.txt@@ -0,0 +1,31 @@ +Microchip SAMA5D2 resistive touchscreen + +Required properties: + + - compatible: microchip,sama5d2-resistive-touch + +Optional properties: + +The device must be connected to an IIO device that provides channels for +position and pressure measurement, and a trigger output that will periodically +trigger when the touch is pressed. +Refer to ../iio/iio-bindings.txt for details + + - io-channels: can have two or three channels connected to an IIO device. +These should correspond to the channels exposed by the IIO device and should +have the right index as the ADC registers them. + - io-channel-names: must have the two or three channels' names : +"x", "y", or "x", "y" and "pressure" + - io-triggers: can have a trigger input connected to an IIO device. + - microchip,pressure-threshold: a pressure threshold for the touchscreen. + Represented by an integer value. + +Example: + + resistive_touch: resistive-touch { + compatible = "microchip,sama5d2-resistive-touch"; + microchip,pressure-threshold = <3000>; + io-channels = <&adc 19>, <&adc 20>, <&adc 21>; + io-channel-names = "x", "y", "pressure"; + io-triggers = <&adc 1>; + };
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2.7.4