linux-kernel - [PATCH 4/4] Input: tsc2004 - Document ts2004 dt bindings

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Message-Id: <1446252086-24334-5-git-send-email-mwelling@ieee.org>
Date:	Fri, 30 Oct 2015 19:41:26 -0500
From:	Michael Welling <mwelling@...e.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	kbuild test robot <lkp@...el.com>, kbuild-all@...org,
	Tony Lindgren <tony@...mide.com>, Pavel Machek <pavel@....cz>,
	Felipe Balbi <balbi@...com>,
	Sebastian Reichel <sre@...nel.org>,
	Roger Quadros <rogerq@...com>, Arnd Bergmann <arnd@...db.de>,
	Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Cc:	Michael Welling <mwelling@...e.org>
Subject: [PATCH 4/4] Input: tsc2004 - Document ts2004 dt bindings

Adds documentation for the devicetree bindings of the new tsc2004 driver.

Signed-off-by: Michael Welling <mwelling@...e.org>
---
 .../bindings/input/touchscreen/tsc2005.txt         | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt b/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt
index 09089a6..27c6082 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt
+++ b/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt
@@ -1,3 +1,42 @@
+* Texas Instruments tsc2004 touchscreen controller
+
+Required properties:
+ - compatible		      : "ti,tsc2004"
+ - interrupts		      : IRQ specifier
+ - vio-supply                 : Regulator specifier
+
+Optional properties:
+ - reset-gpios		      : GPIO specifier
+ - ti,x-plate-ohms	      : integer, resistance of the touchscreen's X plates
+				in ohm (defaults to 280)
+ - ti,esd-recovery-timeout-ms : integer, if the touchscreen does not respond after
+				the configured time (in milli seconds), the driver
+				will reset it. This is disabled by default.
+ - properties defined in touchscreen.txt
+
+Example:
+
+&i2c3 {
+	tsc2004@48 {
+		compatible = "ti,tsc2004";
+		reg = <0x48>;
+		vio-supply = <&vio>;
+
+		reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>;
+		interrupts-extended = <&gpio1 27 IRQ_TYPE_EDGE_RISING>;
+
+		touchscreen-fuzz-x = <4>;
+		touchscreen-fuzz-y = <7>;
+		touchscreen-fuzz-pressure = <2>;
+		touchscreen-size-x = <4096>;
+		touchscreen-size-y = <4096>;
+		touchscreen-max-pressure = <2048>;
+
+		ti,x-plate-ohms = <280>;
+		ti,esd-recovery-timeout-ms = <8000>;
+	};
+}
+
 * Texas Instruments tsc2005 touchscreen controller
 
 Required properties:
-- 
2.1.4

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