diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index 033a3f3..d4bfae7 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1560,6 +1560,9 @@
      network device.  This is used by the bootwrapper to interpret
      MAC addresses passed by the firmware when no information other
      than indices is available to associate an address with a device.
+   - phy-connection-type : a string naming the controller/PHY interface type,
+     i.e., "mii" (default), "rmii", "gmii", "rgmii", "rgmii-id", "tbi",
+     or "rtbi".
 
    Example:
 	ucc@2000 {
@@ -1574,6 +1577,7 @@
 		rx-clock = "none";
 		tx-clock = "clk9";
 		phy-handle = <212000>;
+		phy-connection-type = "gmii";
 		pio-handle = <140001>;
 	};