[PATCH v2 1/2] dt-bindings: usb: usb-nop-xceiv: add wakeup-source property

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USB phy may be a system wakeup source, so add wakeup source property
to keep its resource (e.g. power domain) active to make USB remote
wakeup work.

Signed-off-by: Li Jun <jun.li@xxxxxxx>
---
Change for v2:
- Remove redundant type definition.
- Improve the property description.

 Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml
index 2824c17285ee..326131dcf14d 100644
--- a/Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml
+++ b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.yaml
@@ -39,6 +39,11 @@ properties:
       the VBus line.
     $ref: /schemas/types.yaml#/definitions/phandle
 
+  wakeup-source:
+    description:
+      Specify if the USB phy can detect the remote wakeup signal
+      while the system sleep.
+
 required:
   - compatible
   - '#phy-cells'
-- 
2.34.1




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