diff --git a/Documentation/devicetree/bindings/net/ethernet.txt b/Documentation/devicetree/bindings/net/ethernet.txt
index d4abe9a981092a47e887f72793a2b0491000288c..edd7fd2bbbf93704654551cbc53266609a681919 100644
--- a/Documentation/devicetree/bindings/net/ethernet.txt
+++ b/Documentation/devicetree/bindings/net/ethernet.txt
@@ -11,6 +11,7 @@ The following properties are common to the Ethernet controllers:
   the maximum frame size (there's contradiction in ePAPR).
 - phy-mode: string, operation mode of the PHY interface. This is now a de-facto
   standard property; supported values are:
+  * "internal"
   * "mii"
   * "gmii"
   * "sgmii"