diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index ebe4537a7cce43589c10e8c08cbde29b4295dcc1..4845e29411e460151458a97a39256cff9deff8e7 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -113,7 +113,7 @@ properties:
     const: stmmaceth
 
   mac-mode:
-    maxItems: 1
+    $ref: ethernet-controller.yaml#/properties/phy-connection-type
     description:
       The property is identical to 'phy-mode', and assumes that there is mode
       converter in-between the MAC & PHY (e.g. GMII-to-RGMII). This converter