diff --git a/Documentation/devicetree/bindings/net/fsl-fman.txt b/Documentation/devicetree/bindings/net/fsl-fman.txt
index cd5288fb4318..801efc7d6818 100644
--- a/Documentation/devicetree/bindings/net/fsl-fman.txt
+++ b/Documentation/devicetree/bindings/net/fsl-fman.txt
@@ -388,6 +388,25 @@ PROPERTIES
 		Value type: <prop-encoded-array>
 		Definition: A standard property.
 
+- clocks
+		Usage: optional
+		Value type: <phandle>
+		Definition: A reference to the input clock of the controller
+		from which the MDC frequency is derived.
+
+- clock-frequency
+		Usage: optional
+		Value type: <u32>
+		Definition: Specifies the external MDC frequency, in Hertz, to
+		be used. Requires that the input clock is specified in the
+		"clocks" property. See also: mdio.yaml.
+
+- suppress-preamble
+		Usage: optional
+		Value type: <boolean>
+		Definition: Disable generation of preamble bits. See also:
+		mdio.yaml.
+
 - interrupts
 		Usage: required for external MDIO
 		Value type: <prop-encoded-array>