net: phy: Adding SGMII support for Marvell 88ee1145 driver

Additional code to m88e1145_config_init function to allow the driver to
support SGMII mode.

Signed-off-by: Viet Nga Dao <vndao@altera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index d2b2f2f795d5..3e3d7cadeb27 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -50,9 +50,13 @@
 #define MII_M1011_PHY_SCR               0x10
 #define MII_M1011_PHY_SCR_AUTO_CROSS    0x0060
 
+#define MII_M1145_PHY_EXT_SR            0x1b
 #define MII_M1145_PHY_EXT_CR            0x14
 #define MII_M1145_RGMII_RX_DELAY        0x0080
 #define MII_M1145_RGMII_TX_DELAY        0x0002
+#define MII_M1145_HWCFG_MODE_SGMII_NO_CLK       0x4
+#define MII_M1145_HWCFG_MODE_MASK               0xf
+#define MII_M1145_HWCFG_FIBER_COPPER_AUTO       0x8000
 
 #define MII_M1111_PHY_LED_CONTROL       0x18
 #define MII_M1111_PHY_LED_DIRECT        0x4100
@@ -642,6 +646,7 @@ static int m88e1149_config_init(struct phy_device *phydev)
 static int m88e1145_config_init(struct phy_device *phydev)
 {
         int err;
+        int temp;
 
         /* Take care of errata E0 & E1 */
         err = phy_write(phydev, 0x1d, 0x001b);
@@ -698,6 +703,20 @@ static int m88e1145_config_init(struct phy_device *phydev)
                 }
         }
 
+        if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
+                temp = phy_read(phydev, MII_M1145_PHY_EXT_SR);
+                if (temp < 0)
+                        return temp;
+
+                temp &= ~(MII_M1145_HWCFG_MODE_MASK);
+                temp |= MII_M1145_HWCFG_MODE_SGMII_NO_CLK;
+                temp |= MII_M1145_HWCFG_FIBER_COPPER_AUTO;
+
+                err = phy_write(phydev, MII_M1145_PHY_EXT_SR, temp);
+                if (err < 0)
+                        return err;
+        }
+
         err = marvell_of_reg_init(phydev);
         if (err < 0)
                 return err;