net: dsa: mv88e6xxx: add a soft reset operation

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Marvell chips have different way to issue a software reset.

Old chips (such as 88E6060) have a reset bit in an ATU control register.

Newer chips moved this bit in a Global control register. Chips with
controllable PPU should reset the PPU when resetting the switch.

Add a new reset operation to implement these differences and introduce a
mv88e6xxx_software_reset() helper to wrap it conveniently.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Vivien Didelot 2016-12-05 17:30:27 -05:00 • committed by David S. Miller

parent 309eca6db9

commit 17e708baf7

4 changed files with 172 additions and 40 deletions

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72

drivers/net/dsa/mv88e6xxx/chip.c

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121

drivers/net/dsa/mv88e6xxx/global1.c

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4

drivers/net/dsa/mv88e6xxx/global1.h

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15

drivers/net/dsa/mv88e6xxx/mv88e6xxx.h

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