diff options
| author | Baruch Siach <baruch@tkos.co.il> | 2019-06-27 21:17:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-28 09:28:27 +0300 |
| commit | 4b2e53dfcb599ecdaa3db1a2e7d5bef9bacd5502 (patch) | |
| tree | dd2f8ea6c97fc5ffda65a47ea700cb2bc9460892 /drivers | |
| parent | 17f782cc4039d48436587b897658937158c2ef33 (diff) | |
| download | linux-4b2e53dfcb599ecdaa3db1a2e7d5bef9bacd5502.tar.xz | |
net: dsa: mv88e6xxx: wait after reset deactivation
[ Upstream commit 7b75e49de424ceb53d13e60f35d0a73765626fda ]
Add a 1ms delay after reset deactivation. Otherwise the chip returns
bogus ID value. This is observed with 88E6390 (Peridot) chip.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/chip.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index ae750ab9a4d7..5f81d9a3a2a6 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -4910,6 +4910,8 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev) err = PTR_ERR(chip->reset); goto out; } + if (chip->reset) + usleep_range(1000, 2000); err = mv88e6xxx_detect(chip); if (err) |