net: dsa: mv88e6xxx: Refactor SERDES lane code

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The 6390 family has 8 SERDES lanes. What ports use these lanes depends
on how ports 9 and 10 are configured. If 9 and 10 does not make use of
a line, one of the lower ports can use it.

Add a function to return the lane a port is using, if any, and simplify
the code to power up/down the lane.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Andrew Lunn 2018-08-09 15:38:40 +02:00 • committed by David S. Miller

parent 6c422e34b1

commit a8c01c0d94

1 changed files with 114 additions and 81 deletions

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drivers/net/dsa/mv88e6xxx/serdes.c

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