[PATCH 1/4] dt-bindings: leds: Document "gpio" trigger

[Samuel Holland]

The "gpio" trigger is used to control LEDs by the level of a GPIO input
referenced by the trigger-sources property. This is already documented
in the trigger-sources property description and is used in at least one
devicetree (am335x-regor.dtsi). Document it so validation of those and
future DTs will pass.

Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
---

 Documentation/devicetree/bindings/leds/common.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
index f4e44b33f56d..e148b4277a6f 100644
--- a/Documentation/devicetree/bindings/leds/common.yaml
+++ b/Documentation/devicetree/bindings/leds/common.yaml
@@ -106,6 +106,8 @@ properties:
           - bluetooth-power
             # LED indicates camera flash state
           - flash
+            # LED indicates level of GPIO input referenced by trigger-sources
+          - gpio
             # LED indicated keyboard capslock
           - kbd-capslock
             # LED indicates MTD memory activity
-- 
2.54.0