[PATCH] dt-bindings: usb: dwc3: Add usb-psy-name string

[Ray Chi]

This commit adds documentation for usb-psy-name string.
The string will use to find the power supply interface.
And then, DWC3 can use the interface to control charing
current with USB state and USB speed.

Signed-off-by: Ray Chi <raychi@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index 2247da77eac1..ad62f4552fad 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -301,6 +301,13 @@ properties:
     items:
       enum: [1, 4, 8, 16, 32, 64, 128, 256]
 
+  usb-psy-name:
+    description:
+      Contains the name for power supply interface. To follow
+      BC1.2 specification, DWC3 could use power supply interface
+      to control current with corresponding USB state and USB speed.
+    minItems: 1
+
 unevaluatedProperties: false
 
 required:
-- 
2.31.0.291.g576ba9dcdaf-goog