diff --git a/Documentation/devicetree/bindings/net/mdio.yaml b/Documentation/devicetree/bindings/net/mdio.yaml
index b8fa8251c4bc674e4e90e4a255984808e0202f49..12069d0b25c60eedaec67417d2a8058112e4bab3 100644
--- a/Documentation/devicetree/bindings/net/mdio.yaml
+++ b/Documentation/devicetree/bindings/net/mdio.yaml
@@ -18,6 +18,9 @@ description:
   a device specific binding document.
 
 properties:
+  $nodename:
+    pattern: "^mdio(@.*)?"
+
   reset-gpios:
     maxItems: 1
     description: