diff --git a/Documentation/devicetree/bindings/net/ti,dp83867.txt b/Documentation/devicetree/bindings/net/ti,dp83867.txt
index 99b8681bde49..db6aa3f2215b 100644
--- a/Documentation/devicetree/bindings/net/ti,dp83867.txt
+++ b/Documentation/devicetree/bindings/net/ti,dp83867.txt
@@ -33,8 +33,10 @@ Optional property:
 				    software needs to take when this pin is
 				    strapped in these modes. See data manual
 				    for details.
-	- ti,clk-output-sel - Muxing option for CLK_OUT pin - see dt-bindings/net/ti-dp83867.h
-				    for applicable values.
+	- ti,clk-output-sel - Muxing option for CLK_OUT pin.  See dt-bindings/net/ti-dp83867.h
+			      for applicable values.  The CLK_OUT pin can also
+			      be disabled by this property.  When omitted, the
+			      PHY's default will be left as is.
 
 Note: ti,min-output-impedance and ti,max-output-impedance are mutually
       exclusive. When both properties are present ti,max-output-impedance
diff --git a/include/dt-bindings/net/ti-dp83867.h b/include/dt-bindings/net/ti-dp83867.h
index 7b1656427cbe..192b79439eb7 100644
--- a/include/dt-bindings/net/ti-dp83867.h
+++ b/include/dt-bindings/net/ti-dp83867.h
@@ -56,4 +56,6 @@
 #define DP83867_CLK_O_SEL_CHN_C_TCLK		0xA
 #define DP83867_CLK_O_SEL_CHN_D_TCLK		0xB
 #define DP83867_CLK_O_SEL_REF_CLK		0xC
+/* Special flag to indicate clock should be off */
+#define DP83867_CLK_O_SEL_OFF			0xFFFFFFFF
 #endif