[PATCH 1/1] Documentation: add missing documentation for tps65217-bl device tree binding

[Matus Ujhelyi <ujhelyi.m@gmail.com>]

Signed-off-by: Matus Ujhelyi <matus.ujhelyi@streamunlimited.com>
---
 .../video/backlight/tps65217-backlight.txt         |   25 ++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt

diff --git a/Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt b/Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt
new file mode 100644
index 0000000..cc4ee25
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt
@@ -0,0 +1,25 @@
+TPS65217 family of regulators
+
+The TPS65217 chip contains a boost converter and current sinks which can be
+used to drive LEDs for use as backlights.
+
+Required properties:
+- compatible: "ti,tps65217"
+- reg: I2C slave address
+- backlight: node for specifying WLED1 and WLED2 lines in TPS65217
+- isel: selection bit, valid values: 1 for ISEL1 (low-level) and 2 for ISEL2 (high-level)
+- fdim: PWM dimming frequency, valid values: 100, 200, 500, 1000
+
+Each regulator is defined using the standard binding for regulators.
+
+Example:
+
+	tps: tps@24 {
+		reg = <0x24>;
+		compatible = "ti,tps65217";
+		backlight {
+			isel = <1>;  /* 1 - ISET1, 2 ISET2 */
+			fdim = <100>; /* TPS65217_BL_FDIM_100HZ */
+		};
+	};
+
-- 
1.7.9.5