Documentation: devicetree: update dsa binding with optional properties

Add documentation for a bunch of new optional properties described in
ethernet.txt and fixed-link.txt, this includes: 'phy-handle', 'phy-mode'
and the 'fixed-link' subnode.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.txt b/Documentation/devicetree/bindings/net/dsa/dsa.txt
index 49f4f7ae3f51..a62c889aafca 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.txt
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.txt
@@ -39,6 +39,22 @@ Optionnal property:
                           This property is only used when switches are being
                           chained/cascaded together.
 
+- phy-handle            : Phandle to a PHY on an external MDIO bus, not the
+                          switch internal one. See
+                          Documentation/devicetree/bindings/net/ethernet.txt
+                          for details.
+
+- phy-mode              : String representing the connection to the designated
+                          PHY node specified by the 'phy-handle' property. See
+                          Documentation/devicetree/bindings/net/ethernet.txt
+                          for details.
+
+Optional subnodes:
+- fixed-link            : Fixed-link subnode describing a link to a non-MDIO
+                          managed entity. See
+                          Documentation/devicetree/bindings/net/fixed-link.txt
+                          for details.
+
 Example:
 
         dsa@0 {
@@ -58,6 +74,7 @@ Example:
                         port@0 {
                                 reg = <0>;
                                 label = "lan1";
+                                phy-handle = <&phy0>;
                         };
 
                         port@1 {