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net: phy: bcm7xxx: enable auto power down 

The 28nm process BCM7xxx internal Gigabit PHYs all support automatic
power down, turn on that feature as part of the configuration
initialization callback.

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 2014-08-22 18:55:41 -07:00 committed by David S. Miller
parent 705314797b
commit 9df54ddab9
1 changed files with 26 additions and 1 deletions
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27
drivers/net/phy/bcm7xxx.c
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@ -146,6 +146,27 @@ static int bcm7xxx_28nm_afe_config_init(struct phy_device *phydev)
return 0;
}
static int bcm7xxx_apd_enable(struct phy_device *phydev)
{
int val;
/* Enable powering down of the DLL during auto-power down */
val = bcm54xx_shadow_read(phydev, BCM54XX_SHD_SCR3);
if (val < 0)
return val;
val |= BCM54XX_SHD_SCR3_DLLAPD_DIS;
bcm54xx_shadow_write(phydev, BCM54XX_SHD_SCR3, val);
/* Enable auto-power down */
val = bcm54xx_shadow_read(phydev, BCM54XX_SHD_APD);
if (val < 0)
return val;
val |= BCM54XX_SHD_APD_EN;
return bcm54xx_shadow_write(phydev, BCM54XX_SHD_APD, val);
}
static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
{
int ret;
@ -154,7 +175,11 @@ static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
if (ret)
return ret;
return bcm7xxx_28nm_afe_config_init(phydev);
ret = bcm7xxx_28nm_afe_config_init(phydev);
if (ret)
return ret;
return bcm7xxx_apd_enable(phydev);
}
static int bcm7xxx_28nm_resume(struct phy_device *phydev)