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| author | Florian Fainelli <f.fainelli@gmail.com> | 2020-02-25 02:56:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-11 20:02:57 +0300 |
| commit | e1e85c041e00897bfa2e68d46971177f4c0df4f2 (patch) | |
| tree | 57b8476c0faaba9ea4560d17d65ec67850175ce0 | |
| parent | 5b5295b5c60d6048db2112f4bb691c9cf97631f0 (diff) | |
| download | linux-e1e85c041e00897bfa2e68d46971177f4c0df4f2.tar.xz | |
net: dsa: bcm_sf2: Forcibly configure IMP port for 1Gb/sec
[ Upstream commit 98c5f7d44fef309e692c24c6d71131ee0f0871fb ]
We are still experiencing some packet loss with the existing advanced
congestion buffering (ACB) settings with the IMP port configured for
2Gb/sec, so revert to conservative link speeds that do not produce
packet loss until this is resolved.
Fixes: 8f1880cbe8d0 ("net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec")
Fixes: de34d7084edd ("net: dsa: bcm_sf2: Only 7278 supports 2Gb/sec IMP port")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/dsa/bcm_sf2.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c index 747062f04bb5..6bca42e34a53 100644 --- a/drivers/net/dsa/bcm_sf2.c +++ b/drivers/net/dsa/bcm_sf2.c @@ -138,8 +138,7 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port) /* Force link status for IMP port */ reg = core_readl(priv, offset); reg |= (MII_SW_OR | LINK_STS); - if (priv->type == BCM7278_DEVICE_ID) - reg |= GMII_SPEED_UP_2G; + reg &= ~GMII_SPEED_UP_2G; core_writel(priv, reg, offset); /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */ |