net: phy: Add SGMII support for TI phy

Add support of SGMII to TI phy dp838367
Enable the SGMII and PCS settings in phy
control, CFG2 and BIST registers

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/drivers/net/phy/ti.c b/drivers/net/phy/ti.c
index c3912d5..937426b 100644 (file)
--- a/drivers/net/phy/ti.c
+++ b/drivers/net/phy/ti.c
@@ -12,6 +12,8 @@
 
 #define MII_DP83867_PHYCTRL    0x10
 #define MII_DP83867_MICR       0x12
+#define MII_DP83867_CFG2       0x14
+#define MII_DP83867_BISCR      0x16
 #define DP83867_CTRL           0x1f
 
 /* Extended Registers */
@@ -43,10 +45,22 @@
 #define DP83867_PHYCR_FIFO_DEPTH_SHIFT         14
 #define DP83867_MDI_CROSSOVER          5
 #define DP83867_MDI_CROSSOVER_AUTO     2
+#define DP83867_MDI_CROSSOVER_MDIX     2
+#define DP83867_PHYCTRL_SGMIIEN                        0x0800
+#define DP83867_PHYCTRL_RXFIFO_SHIFT   12
+#define DP83867_PHYCTRL_TXFIFO_SHIFT   14
 
 /* RGMIIDCTL bits */
 #define DP83867_RGMII_TX_CLK_DELAY_SHIFT       4
 
+/* CFG2 bits */
+#define MII_DP83867_CFG2_SPEEDOPT_10EN         0x0040
+#define MII_DP83867_CFG2_SGMII_AUTONEGEN       0x0080
+#define MII_DP83867_CFG2_SPEEDOPT_ENH          0x0100
+#define MII_DP83867_CFG2_SPEEDOPT_CNT          0x0800
+#define MII_DP83867_CFG2_SPEEDOPT_INTLOW       0x2000
+#define MII_DP83867_CFG2_MASK                  0x003F
+
 #define MII_MMD_CTRL   0x0d /* MMD Access Control Register */
 #define MII_MMD_DATA   0x0e /* MMD Access Data Register */
 
@@ -141,7 +155,7 @@ static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
 
 static int dp83867_config(struct phy_device *phydev)
 {
-       unsigned int val, delay;
+       unsigned int val, delay, cfg2;
        int ret;
 
        /* Restart the PHY.  */
@@ -155,6 +169,29 @@ static int dp83867_config(struct phy_device *phydev)
                        (FIFO_DEPTH << DP83867_PHYCR_FIFO_DEPTH_SHIFT));
                if (ret)
                        return ret;
+       } else {
+               phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR,
+                         (BMCR_ANENABLE | BMCR_FULLDPLX | BMCR_SPEED1000));
+
+               cfg2 = phy_read(phydev, phydev->addr, MII_DP83867_CFG2);
+               cfg2 &= MII_DP83867_CFG2_MASK;
+               cfg2 |= (MII_DP83867_CFG2_SPEEDOPT_10EN |
+                        MII_DP83867_CFG2_SGMII_AUTONEGEN |
+                        MII_DP83867_CFG2_SPEEDOPT_ENH |
+                        MII_DP83867_CFG2_SPEEDOPT_CNT |
+                        MII_DP83867_CFG2_SPEEDOPT_INTLOW);
+               phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83867_CFG2, cfg2);
+
+               phy_write_mmd_indirect(phydev, DP83867_RGMIICTL,
+                                      DP83867_DEVADDR, phydev->addr, 0x0);
+
+               phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83867_PHYCTRL,
+                         DP83867_PHYCTRL_SGMIIEN |
+                         (DP83867_MDI_CROSSOVER_MDIX <<
+                         DP83867_MDI_CROSSOVER) |
+                         (FIFO_DEPTH << DP83867_PHYCTRL_RXFIFO_SHIFT) |
+                         (FIFO_DEPTH  << DP83867_PHYCTRL_TXFIFO_SHIFT));
+               phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83867_BISCR, 0x0);
        }
 
        if ((phydev->interface >= PHY_INTERFACE_MODE_RGMII_ID) &&