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authorAndrew Lunn <andrew@lunn.ch>2017-01-24 14:53:50 +0100
committerDavid S. Miller <davem@davemloft.net>2017-01-24 15:33:51 -0500
commita3c53be55c955b7150cda17874c3fcb4eeb97a89 (patch)
tree5093c1039cf33ac238e5a31db2271a6e845bfdd9 /Documentation/devicetree/bindings/net/dsa
parent0dd12d54c4252e5a51f3b9f7b622b3b7a5b95293 (diff)
downloadlinux-stericsson-a3c53be55c955b7150cda17874c3fcb4eeb97a89.tar.gz
net: dsa: mv88e6xxx: Support multiple MDIO busses
The mv88e6390 has multiple MDIO busses. Generalize the parsing of the device tree to support multiple mdio nodes. The external mdio bus has a compatible strings to indicate it is external. Keep a linked list of busses, placing the external mdio bus at the tail of the list. When within the driver an mdio bus is needed, e.g. for EEE or SERDES, use the head of the list which should be the internal bus. Signed-off-by: Andrew Lunn <andrew@lunn.ch> 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/marvell.txt41
1 files changed, 39 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/net/dsa/marvell.txt b/Documentation/devicetree/bindings/net/dsa/marvell.txt
index b3dd6b40e0de..64dbdd825981 100644
--- a/Documentation/devicetree/bindings/net/dsa/marvell.txt
+++ b/Documentation/devicetree/bindings/net/dsa/marvell.txt
@@ -26,8 +26,12 @@ Optional properties:
- interrupt-controller : Indicates the switch is itself an interrupt
controller. This is used for the PHY interrupts.
#interrupt-cells = <2> : Controller uses two cells, number and flag
-- mdio : container of PHY and devices on the switches MDIO
- bus
+- mdio : Container of PHY and devices on the switches MDIO
+ bus.
+- mdio? : Container of PHYs and devices on the external MDIO
+ bus. The node must contains a compatible string of
+ "marvell,mv88e6xxx-mdio-external"
+
Example:
mdio {
@@ -53,3 +57,36 @@ Example:
};
};
};
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupt-parent = <&gpio0>;
+ interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ switch0: switch@0 {
+ compatible = "marvell,mv88e6390";
+ reg = <0>;
+ reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
+ };
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ switch1phy0: switch1phy0@0 {
+ reg = <0>;
+ interrupt-parent = <&switch0>;
+ interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+
+ mdio1 {
+ compatible = "marvell,mv88e6xxx-mdio-external";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ switch1phy9: switch1phy0@9 {
+ reg = <9>;
+ };
+ };
+ };