From: Andreas Svensson andreas.svensson@axis.com
[ Upstream commit 3c27f3d53d588618d81d30d6712459a3cc9489b8 ]
A switch held in reset by default needs to wait longer until we can reliably detect it.
An issue was observed when testing on the Marvell 88E6393X (Link Street). The driver failed to detect the switch on some upstarts. Increasing the wait time after reset deactivation solves this issue.
The updated wait time is now also the same as the wait time in the mv88e6xxx_hardware_reset function.
Fixes: 7b75e49de424 ("net: dsa: mv88e6xxx: wait after reset deactivation") Signed-off-by: Andreas Svensson andreas.svensson@axis.com Reviewed-by: Andrew Lunn andrew@lunn.ch Link: https://lore.kernel.org/r/20230530145223.1223993-1-andreas.svensson@axis.com Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/dsa/mv88e6xxx/chip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index b593e4d85e9c0..792073a768ac0 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -4840,7 +4840,7 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev) goto out; } if (chip->reset) - usleep_range(1000, 2000); + usleep_range(10000, 20000);
err = mv88e6xxx_detect(chip); if (err)