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-rw-r--r--Documentation/devicetree/bindings/leds/common.txt6
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
index 34811c57db69..747c53805eec 100644
--- a/Documentation/devicetree/bindings/leds/common.txt
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -14,8 +14,10 @@ Optional properties for child nodes:
- led-sources : List of device current outputs the LED is connected to. The
outputs are identified by the numbers that must be defined
in the LED device binding documentation.
-- label : The label for this LED. If omitted, the label is
- taken from the node name (excluding the unit address).
+- label : The label for this LED. If omitted, the label is taken from the node
+ name (excluding the unit address). It has to uniquely identify
+ a device, i.e. no other LED class device can be assigned the same
+ label.
- linux,default-trigger : This parameter, if present, is a
string defining the trigger assigned to the LED. Current triggers are: