diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
index 1432fda3b603..47bc2057e629 100644
--- a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
+++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
@@ -40,6 +40,9 @@ properties:
   clock-names:
     const: stmmaceth
 
+  phy-supply:
+    description: PHY regulator
+
   syscon:
     $ref: /schemas/types.yaml#/definitions/phandle
     description: