diff --git a/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml b/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml
index a1b71b35319e..42f9843d1868 100644
--- a/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml
+++ b/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml
@@ -38,6 +38,10 @@ properties:
 
   managed: true
 
+  phys:
+    description: A reference to the SerDes lane(s)
+    maxItems: 1
+
 required:
   - reg