diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
index a3bf432960d8..17ab6c69ecc7 100644
--- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
@@ -66,6 +66,9 @@ properties:
       - mediatek,mt7531
       - mediatek,mt7621
 
+  reg:
+    maxItems: 1
+
   core-supply:
     description:
       Phandle to the regulator node necessary for the core power.