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net: bcmgenet: fix GPHY power-up sequence 

We were missing a number of extra steps and delays to power-up the GPHY, update
the sequence to reflect the proper procedure here.

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 2015-03-23 15:09:54 -07:00 committed by David S. Miller
parent 8212c98358
commit 0c81a8ee61
1 changed files with 7 additions and 3 deletions
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10
drivers/net/ethernet/broadcom/genet/bcmmii.c
View File

@ -179,14 +179,18 @@ static void bcmgenet_phy_power_set(struct net_device *dev, bool enable)
if (enable) { if (enable) {
reg = bcmgenet_ext_readl(priv, EXT_GPHY_CTRL); reg = bcmgenet_ext_readl(priv, EXT_GPHY_CTRL);
reg &= ~(EXT_CFG_IDDQ_BIAS | EXT_CFG_PWR_DOWN | EXT_CK25_DIS); reg &= ~EXT_CK25_DIS;
bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
mdelay(1);
reg &= ~(EXT_CFG_IDDQ_BIAS | EXT_CFG_PWR_DOWN);
reg |= EXT_GPHY_RESET; reg |= EXT_GPHY_RESET;
bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL); bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
mdelay(2); mdelay(1);
reg &= ~EXT_GPHY_RESET; reg &= ~EXT_GPHY_RESET;
bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL); bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
udelay(20); udelay(60);
} }
} }