[RFC 1/4] Documentation: devicetree: add multiple cpu port DSA binding

[John Crispin]

From: Andrew Lunn <and...@lunn.ch>

Extend the DSA binding documentation, adding the new properties required
when there is more than one CPU port attached to the switch.

Cc: Rob Herring <robh...@kernel.org>
Cc: devicet...@vger.kernel.org
Signed-off-by: Andrew Lunn <and...@lunn.ch>
---
 Documentation/devicetree/bindings/net/dsa/dsa.txt |   67 ++++++++++++++++++++-
 1 file changed, 66 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.txt 
b/Documentation/devicetree/bindings/net/dsa/dsa.txt
index a4a570f..fc901cf 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.txt
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.txt
@@ -337,13 +337,25 @@ Optional property:
                          This mii-bus will be used in preference to the
                          global dsa,mii-bus defined above, for this switch.
 
+- ethernet             : Optional for "cpu" ports. A phandle to an ethernet
+                          device which will be used by this CPU port for
+                         passing packets to/from the host. If not present,
+                         the port will use the "dsa,ethernet" property
+                         defined above.
+
+- cpu                  : Option for non "cpu"/"dsa" ports. A phandle to a
+                         "cpu" port, which will be used for passing packets
+                         from this port to the host. If not present, the first
+                         "cpu" port will be used.
+
+
 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:
+Examples:
 
        dsa@0 {
                compatible = "marvell,dsa";
@@ -416,3 +428,56 @@ Example:
                        };
                };
        };
+
+       dsa@1 {
+               compatible = "marvell,dsa";
+               #address-cells = <2>;
+               #size-cells = <0>;
+
+               dsa,ethernet = <&eth0port>;
+               dsa,mii-bus = <&mdio>;
+
+               switch@0 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <0 0>;    /* MDIO address 0, switch 0 in tree */
+
+                       port@0 {
+                               reg = <0>;
+                               label = "lan4";
+                       };
+
+                       port@1 {
+                               reg = <1>;
+                               label = "lan3";
+                               cpu = <&cpu1>;
+                       };
+
+                       port@2 {
+                               reg = <2>;
+                               label = "lan2";
+                       };
+
+                       port@3 {
+                               reg = <3>;
+                               label = "lan1";
+                               cpu = <&cpu1>;
+                       };
+
+                       port@4 {
+                               reg = <4>;
+                               label = "wan";
+                       };
+
+                       port@5 {
+                               reg = <5>;
+                               label = "cpu";
+                       };
+
+                       cpu1: port@6 {
+                               reg = <6>;
+                               label = "cpu";
+                               ethernet = <&eth1port>;
+                       };
+               };
+       };
-- 
1.7.10.4