net: dsa: mv88e6xxx: Support multiple MDIO busses

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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>

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Andrew Lunn 2017-01-24 14:53:50 +01:00 • committed by David S. Miller

parent 0dd12d54c4

commit a3c53be55c

3 changed files with 126 additions and 35 deletions

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41

Documentation/devicetree/bindings/net/dsa/marvell.txt

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114

drivers/net/dsa/mv88e6xxx/chip.c

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10

drivers/net/dsa/mv88e6xxx/mv88e6xxx.h

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