dt: bindings: lp8860: Add trigger binding to the lp8860

Add a default trigger optional node to the child node.
This will allow the driver to set the trigger for a backlight.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/leds/leds-lp8860.txt b/Documentation/devicetree/bindings/leds/leds-lp8860.txt
index 77ddd22c20dc..5f0e892ad759 100644
--- a/Documentation/devicetree/bindings/leds/leds-lp8860.txt
+++ b/Documentation/devicetree/bindings/leds/leds-lp8860.txt
@@ -21,6 +21,8 @@ Required child properties:
 
 Optional child properties:
         - label : see Documentation/devicetree/bindings/leds/common.txt
+        - linux,default-trigger :
+           see Documentation/devicetree/bindings/leds/common.txt
 
 Example:
 
@@ -35,6 +37,7 @@ led-controller@2d {
         led@0 {
                 reg = <0>;
                 label = "white:backlight";
+                linux,default-trigger = "backlight";
         };
 }