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authorAndrew Lunn <andrew@lunn.ch>2015-08-08 17:09:14 +0200
committerDavid S. Miller <davem@davemloft.net>2015-08-10 14:25:02 -0700
commit6bc6d0a88179b732b9a5e40e05099dc219d1b3cb (patch)
tree06ca8d36ecf28a6319ce7bd9f1f6f57b14929c9f /Documentation/devicetree/bindings/net/dsa
parent966bce38e7fdb75eedaec90e40e4d22b9fbce79f (diff)
downloadlinux-stericsson-6bc6d0a88179b732b9a5e40e05099dc219d1b3cb.tar.gz
dsa: Support multiple MDIO busses
When using a cluster of switches, some topologies will have an MDIO bus per switch, not one for the whole cluster. Allow this to be represented in the device tree, by adding an optional mii-bus property at the switch level. The old platform_device method of instantiation supports this already, so only the device tree binding needs extending with an additional optional phandle. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/devicetree/bindings/net/dsa')
-rw-r--r--Documentation/devicetree/bindings/net/dsa/dsa.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.txt b/Documentation/devicetree/bindings/net/dsa/dsa.txt
index f0b4cd72411d..9cf9a0ec333c 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.txt
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.txt
@@ -58,6 +58,10 @@ 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
@@ -107,6 +111,7 @@ Example:
#address-cells = <1>;
#size-cells = <0>;
reg = <17 1>; /* MDIO address 17, switch 1 in tree */
+ mii-bus = <&mii_bus1>;
switch1uplink: port@0 {
reg = <0>;