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net: bcmgenet: Software reset EPHY after power on

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The EPHY on GENET v1->v3 is extremely finicky, and will show occasional
failures based on the timing and reset sequence, ranging from duplicate
packets, to extremely high latencies.

Perform an additional software reset, and re-configuration to make sure it is
in a consistent and working state.

Fixes: 6ac3ce8295 ("net: bcmgenet: Remove excessive PHY reset")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli
2015-10-29 18:11:35 -07:00
committed by David S. Miller
parent b43c142f22
commit 5dbebbb44a
3 changed files with 22 additions and 1 deletions
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4
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@@ -907,8 +907,10 @@ static void bcmgenet_power_up(struct bcmgenet_priv *priv,
}
bcmgenet_ext_writel(priv, reg, EXT_EXT_PWR_MGMT);
if (mode == GENET_POWER_PASSIVE)
if (mode == GENET_POWER_PASSIVE) {
bcmgenet_phy_power_set(priv->dev, true);
bcmgenet_mii_reset(priv->dev);
}
}
/* ioctl handle special commands that are not present in ethtool. */