This adds device tree binding documentation for the Colibri VF50
touchscreen driver.
Signed-off-by: Sanchayan Maity <maitysanchayan@xxxxxxxxx>
---
.../bindings/input/touchscreen/colibri-vf50-ts.txt | 34 ++++++++++++++++++++++
1 file changed, 34 insertions(+)
create mode 100644 Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt
diff --git a/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt
new file mode 100644
index 0000000..caad52a
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt
@@ -0,0 +1,34 @@
+* Toradex Colibri VF50 Touchscreen driver
+
+Required Properties:
+- compatible must be toradex,vf50-touchctrl
+- io-channels: adc channels being used by the Colibri VF50 module
+- xp-gpios: FET gate driver for input of X+
+- xm-gpios: FET gate driver for input of X-
+- yp-gpios: FET gate driver for input of Y+
+- ym-gpios: FET gate driver for input of Y-
+- pen-detect-gpios: GPIO for pen detect irq
+- pen-pullup-gpios: GPIO for pen pullup
+- pinctrl-names: "idle", "default", "gpios"
+- pinctrl-0: pinctrl node for idle state gpio pinmux
+- pinctrl-1: pinctrl node for touch detection state pinmux
+- pinctrl-2: pinctrl node for gpios functioning as FET gate drivers
+
+Example:
+
+ touchctrl: vf50_touchctrl {
+ compatible = "toradex,vf50-touchctrl";
+ io-channels = <&adc1 0>,<&adc0 0>,
+ <&adc0 1>,<&adc1 2>;
+ xp-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+ xm-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
+ yp-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
+ ym-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+ pen-detect-gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
+ pen-pullup-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
+ pinctrl-names = "idle","default","gpios";
+ pinctrl-0 = <&pinctrl_touchctrl_idle>;
+ pinctrl-1 = <&pinctrl_touchctrl_default>;
+ pinctrl-2 = <&pinctrl_touchctrl_gpios>;
+ status = "disabled";
+ };
--
2.4.6
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