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 8f1d759..8f0a897 100644
--- 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 @@
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);