net: bcmgenet: implement GPHY power down sequence

Implement the GPHY power down sequence by setting all power down bits, putting
the GPHY in reset, and finally cutting the 25Mhz reference clock.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index c26c075..3320219 100644 (file)
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -177,8 +177,8 @@ static void bcmgenet_phy_power_set(struct net_device *dev, bool enable)
        if (!GENET_IS_V4(priv))
                return;
 
+       reg = bcmgenet_ext_readl(priv, EXT_GPHY_CTRL);
        if (enable) {
-               reg = bcmgenet_ext_readl(priv, EXT_GPHY_CTRL);
                reg &= ~EXT_CK25_DIS;
                bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
                mdelay(1);
@@ -189,9 +189,14 @@ static void bcmgenet_phy_power_set(struct net_device *dev, bool enable)
                mdelay(1);
 
                reg &= ~EXT_GPHY_RESET;
+       } else {
+               reg |= EXT_CFG_IDDQ_BIAS | EXT_CFG_PWR_DOWN | EXT_GPHY_RESET;
                bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
-               udelay(60);
+               mdelay(1);
+               reg |= EXT_CK25_DIS;
        }
+       bcmgenet_ext_writel(priv, reg, EXT_GPHY_CTRL);
+       udelay(60);
 }
 
 static void bcmgenet_internal_phy_setup(struct net_device *dev)