net: dsa: microchip: use collision based back pressure mode

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[ Upstream commit d963c95bc9 ]

Errata DS80000758 states that carrier sense back pressure mode can cause
link down issues in 100BASE-TX half duplex mode. The datasheet also
recommends to always use the collision based back pressure mode.

Fixes: b987e98e50 ("dsa: add DSA switch driver for Microchip KSZ9477")
Signed-off-by: Enguerrand de Ribaucourt <enguerrand.de-ribaucourt@savoirfairelinux.com>
Reviewed-by: Woojung Huh <Woojung.huh@microchip.com>
Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Enguerrand de Ribaucourt 2024-06-21 16:43:21 +02:00 • committed by Greg Kroah-Hartman

parent aecaaf8abd

commit 75fabdc911

2 changed files with 5 additions and 0 deletions

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4

drivers/net/dsa/microchip/ksz9477.c

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1

drivers/net/dsa/microchip/ksz9477_reg.h

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