dt-bindings: net: xgmac_mdio: Add "clock-frequency" and "suppress-preamble"

The driver now supports the standard "clock-frequency" and
"suppress-preamble" properties, do document them in the binding
description.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/devicetree/bindings/net/fsl-fman.txt b/Documentation/devicetree/bindings/net/fsl-fman.txt
index cd5288f..801efc7 100644 (file)
--- 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>