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-rw-r--r--Documentation/devicetree/bindings/net/dsa/dsa.txt38
1 files changed, 32 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.txt b/Documentation/devicetree/bindings/net/dsa/dsa.txt
index f0b4cd72411d..04e6bef3ac3f 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.txt
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.txt
@@ -44,9 +44,10 @@ Note that a port labelled "dsa" will imply checking for the uplink phandle
described below.
Optionnal property:
-- link : Should be a phandle to another switch's DSA port.
+- link : Should be a list of phandles to another switch's DSA port.
This property is only used when switches are being
- chained/cascaded together.
+ chained/cascaded together. This port is used as outgoing port
+ towards the phandle port, which can be more than one hop away.
- phy-handle : Phandle to a PHY on an external MDIO bus, not the
switch internal one. See
@@ -58,6 +59,10 @@ Optionnal property:
Documentation/devicetree/bindings/net/ethernet.txt
for details.
+- mii-bus : Should be a phandle to a valid MDIO bus device node.
+ This mii-bus will be used in preference to the
+ global dsa,mii-bus defined above, for this switch.
+
Optional subnodes:
- fixed-link : Fixed-link subnode describing a link to a non-MDIO
managed entity. See
@@ -96,10 +101,11 @@ Example:
label = "cpu";
};
- switch0uplink: port@6 {
+ switch0port6: port@6 {
reg = <6>;
label = "dsa";
- link = <&switch1uplink>;
+ link = <&switch1port0
+ &switch2port0>;
};
};
@@ -107,11 +113,31 @@ Example:
#address-cells = <1>;
#size-cells = <0>;
reg = <17 1>; /* MDIO address 17, switch 1 in tree */
+ mii-bus = <&mii_bus1>;
+
+ switch1port0: port@0 {
+ reg = <0>;
+ label = "dsa";
+ link = <&switch0port6>;
+ };
+ switch1port1: port@1 {
+ reg = <1>;
+ label = "dsa";
+ link = <&switch2port1>;
+ };
+ };
+
+ switch@2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <18 2>; /* MDIO address 18, switch 2 in tree */
+ mii-bus = <&mii_bus1>;
- switch1uplink: port@0 {
+ switch2port0: port@0 {
reg = <0>;
label = "dsa";
- link = <&switch0uplink>;
+ link = <&switch1port1
+ &switch0port6>;
};
};
};