Extend the DSA binding documentation, adding the new property 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: John Crispin <j...@phrozen.org>
---
Documentation/devicetree/bindings/net/dsa/dsa.txt | 61 ++++++++++++++++++++++-
1 file changed, 60 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.txt
b/Documentation/devicetree/bindings/net/dsa/dsa.txt
index cfe8f64eca4f..c164eb38ccc5 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.txt
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.txt
@@ -55,6 +55,11 @@ A user port has the following optional property:
- label : Describes the label associated with this
port, which
will become the netdev name.
+- 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.
+
Port child nodes may also contain the following optional standardised
properties, described in binding documents:
@@ -71,7 +76,7 @@ properties, described in binding documents:
Documentation/devicetree/bindings/net/fixed-link.txt
for details.
-Example
+Examples
The following example shows three switches on three MDIO busses,
linked into one DSA cluster.
@@ -264,6 +269,60 @@ linked into one DSA cluster.
};
};
+The following example shows a switch that has two cpu ports each connecting
+to a different MAC.
+
+&mdio0 {
+ switch@0 {
+ compatible = "mediatek,mt7530";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ port@0 {
+ reg = <0>;
+ label = "lan0";
+ cpu = <&cpu_port1>;
+ };
+
+ port@1 {
+ reg = <1>;
+ label = "lan1";
+ cpu = <&cpu_port1>;
+ };
+
+ port@2 {
+ reg = <2>;
+ label = "lan2";
+ cpu = <&cpu_port1>;
+ };
+
+ port@3 {
+ reg = <3>;
+ label = "wan";
+ cpu = <&cpu_port2>;
+ };
+
+ cpu_port2: port@5 {
+ reg = <5>;
+ label = "cpu";
+ ethernet = <&gmac2>;
+ phy-mode = "trgmii";
+ };
+
+ cpu_port1: port@6 {
+ reg = <6>;
+ label = "cpu";
+ ethernet = <&gmac1>;
+ phy-mode = "trgmii";
+ };
+ };
+ };
+};
+
Deprecated Binding
------------------
--
2.11.0
