diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 7a3ec9d39a9a62952a5f598c9dd03794a3a58529..dd6f54d1b49539a39fb2b18bfd19d2a5e10f3746 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -243,6 +243,7 @@ static int m88e1111_config_init(struct phy_device *phydev)
 
 		temp &= ~(MII_M1111_HWCFG_MODE_MASK);
 		temp |= MII_M1111_HWCFG_MODE_SGMII_NO_CLK;
+		temp |= MII_M1111_HWCFG_FIBER_COPPER_AUTO;
 
 		err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
 		if (err < 0)