From: Rafał Miłecki <rafal@milecki.pl>
Date: Thu, 16 Mar 2023 13:55:46 +0000 (+0100)
Subject: dt-bindings: leds: Add "usbport" trigger
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=820d7550a99cc09bb321fb2b890647e3669ce53f;p=linux.git
dt-bindings: leds: Add "usbport" trigger
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@milecki.pl>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230316135546.9162-1-zajec5@gmail.com
---
diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
index 61e63ed81ced1..11aedf1650a12 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