net: dsa: microchip: monitor potential faults in half-duplex mode

Browse source

The errata DS80000754 recommends monitoring potential faults in
half-duplex mode for the KSZ9477 family.

half-duplex is not very common so I just added a critical message
when the fault conditions are detected. The switch can be expected
to be unable to communicate anymore in these states and a software
reset of the switch would be required which I did not implement.

Fixes: b987e98e50 ("dsa: add DSA switch driver for Microchip KSZ9477")
Signed-off-by: Enguerrand de Ribaucourt <enguerrand.de-ribaucourt@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Enguerrand de Ribaucourt 2024-06-21 16:43:22 +02:00 • committed by David S. Miller

parent d963c95bc9

commit bf1bff11e4

5 changed files with 73 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

51

drivers/net/dsa/microchip/ksz9477.c

View file

2

drivers/net/dsa/microchip/ksz9477.h

View file

10

drivers/net/dsa/microchip/ksz9477_reg.h

View file

11

drivers/net/dsa/microchip/ksz_common.c

View file

1

drivers/net/dsa/microchip/ksz_common.h

View file