net: phy: realtek: add rx delay support for RTL8211F

Add RX delay enable support for RTL8211F PHY.

Reviewed-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 8f1d75963259848490b66af7a4453e628b8177ab..8f0a897a46dc31495f719331a1fb2268294ec469 100644 (file)
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -56,6 +56,7 @@
 
 #define MIIM_RTL8211F_PAGE_SELECT      0x1f
 #define MIIM_RTL8211F_TX_DELAY         0x100
+#define MIIM_RTL8211F_RX_DELAY         0x8
 #define MIIM_RTL8211F_LCR              0x10
 
 static int rtl8211f_phy_extread(struct phy_device *phydev, int addr,
@@ -183,6 +184,16 @@ static int rtl8211f_config(struct phy_device *phydev)
                reg &= ~MIIM_RTL8211F_TX_DELAY;
 
        phy_write(phydev, MDIO_DEVAD_NONE, 0x11, reg);
+
+       /* enable RX-delay for rgmii-id and rgmii-rxid, otherwise disable it */
+       reg = phy_read(phydev, MDIO_DEVAD_NONE, 0x15);
+       if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+           phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)
+               reg |= MIIM_RTL8211F_RX_DELAY;
+       else
+               reg &= ~MIIM_RTL8211F_RX_DELAY;
+       phy_write(phydev, MDIO_DEVAD_NONE, 0x15, reg);
+
        /* restore to default page 0 */
        phy_write(phydev, MDIO_DEVAD_NONE,
                  MIIM_RTL8211F_PAGE_SELECT, 0x0);