linux-kernel - [PATCH v2 4/4] input: Add DT binding documentation for Colibri VF50 touchscreen

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Message-Id: <24246fb8671b84d067879c1e1c274b0d68bd3b8c.1437058481.git.maitysanchayan@gmail.com>
Date:	Thu, 16 Jul 2015 20:43:22 +0530
From:	Sanchayan Maity <maitysanchayan@...il.com>
To:	linux-input@...r.kernel.org, devicetree@...r.kernel.org
Cc:	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	shawn.guo@...aro.org, kernel@...gutronix.de, stefan@...er.ch,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Sanchayan Maity <maitysanchayan@...il.com>
Subject: [PATCH v2 4/4] input: Add DT binding documentation for Colibri VF50 touchscreen

This adds device tree binding documentation for the Colibri VF50
touchscreen driver.

Signed-off-by: Sanchayan Maity <maitysanchayan@...il.com>
---
 .../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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