net: phy: marvell: add PHY tunable fast link down support for 88E1540

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1000BaseT standard requires that a link is reported as down earliest
after 750ms. Several use case however require a much faster detecion
of a broken link. Fast Link Down supports this by intentionally
violating a the standard. This patch exposes the Fast Link Down
feature of 88E1540 and 88E6390. These PHY's can be found as internal
PHY's in several switches: 88E6352, 88E6240, 88E6176, 88E6172,
and 88E6390(X). Fast Link Down and EEE are mutually exclusive.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Heiner Kallweit 2019-03-25 19:35:41 +01:00 • committed by David S. Miller

parent 3aeb0803f7

commit 69f42be8af

1 changed files with 108 additions and 0 deletions

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drivers/net/phy/marvell.c

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