dt: bindings: lm3692x: Add bindings for lm3692x LED driver

This adds the devicetree bindings for the LM3692x
I2C LED string driver.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>

diff --git a/Documentation/devicetree/bindings/leds/leds-lm3692x.txt b/Documentation/devicetree/bindings/leds/leds-lm3692x.txt
new file mode 100644 (file)
index 0000000..6c9074f
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-lm3692x.txt
@@ -0,0 +1,49 @@
+* Texas Instruments - LM3692x Highly Efficient White LED Driver
+
+The LM3692x is an ultra-compact, highly efficient,
+white-LED driver designed for LCD display backlighting.
+
+The main difference between the LM36922 and LM36923 is the number of
+LED strings it supports.  The LM36922 supports two strings while the LM36923
+supports three strings.
+
+Required properties:
+       - compatible:
+               "ti,lm36922"
+               "ti,lm36923"
+       - reg :  I2C slave address
+       - #address-cells : 1
+       - #size-cells : 0
+
+Optional properties:
+       - enable-gpios : gpio pin to enable/disable the device.
+       - vled-supply : LED supply
+
+Required child properties:
+       - reg : 0
+
+Optional child properties:
+       - label : see Documentation/devicetree/bindings/leds/common.txt
+       - linux,default-trigger :
+          see Documentation/devicetree/bindings/leds/common.txt
+
+Example:
+
+led-controller@36 {
+       compatible = "ti,lm3692x";
+       reg = <0x36>;
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
+       vled-supply = <&vbatt>;
+
+       led@0 {
+               reg = <0>;
+               label = "white:backlight_cluster";
+               linux,default-trigger = "backlight";
+       };
+}
+
+For more product information please see the link below:
+http://www.ti.com/lit/ds/snvsa29/snvsa29.pdf