From: Rafał Miłecki <rafal@xxxxxxxxxx>
Linux's "usbport" trigger is a bit specific one. It allows LED to follow
state of multiple USB ports which have to be selected additionally
(there isn't a single trigger for each port).
Default list of USB ports to monitor can be specified using
"trigger-sources" DT property. Theoretically it should be possible for
Linux to deduce applicable trigger based on the references nodes in the
"trigger-sources". It hasn't been implemented however (probably due to
laziness).
Milk spilled - we already have DT files specifying "usbport" manually -
allow that value in the binding. This fixes validation of in-kernel and
external DT files.
Signed-off-by: Rafał Miłecki <rafal@xxxxxxxxxx>
---
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 61e63ed81ced..11aedf1650a1 100644
--- a/Documentation/devicetree/bindings/leds/common.yaml
+++ b/Documentation/devicetree/bindings/leds/common.yaml
@@ -125,6 +125,8 @@ properties:
- usb-gadget
# LED indicates USB host activity
- usb-host
+ # LED indicates USB port state
+ - usbport
# LED is triggered by CPU activity
- pattern: "^cpu[0-9]*$"
# LED is triggered by Bluetooth activity
--
2.34.1
