diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 20db302d31ce..ef9ec3b6a5c8 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -326,7 +326,7 @@ static void mtk_mac_config(struct phylink_config *config, unsigned int mode,
 		/* Setup SGMIISYS with the determined property */
 		if (state->interface != PHY_INTERFACE_MODE_SGMII)
 			err = mtk_sgmii_setup_mode_force(eth->sgmii, sid,
-							 state);
+							 state->interface);
 		else if (phylink_autoneg_inband(mode))
 			err = mtk_sgmii_setup_mode_an(eth->sgmii, sid);
 
@@ -423,6 +423,13 @@ static void mtk_mac_link_up(struct phylink_config *config,
 					   phylink_config);
 	u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id));
 
+	if (phy_interface_mode_is_8023z(interface)) {
+		/* Decide how GMAC and SGMIISYS be mapped */
+		int sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ?
+			   0 : mac->id;
+		mtk_sgmii_link_up(eth->sgmii, sid, speed, duplex);
+	}
+
 	mcr &= ~(MAC_MCR_SPEED_100 | MAC_MCR_SPEED_1000 |
 		 MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_TX_FC |
 		 MAC_MCR_FORCE_RX_FC);
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 454cfcd465fd..6f4b99bb7bfb 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -932,7 +932,8 @@ int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *np,
 		   u32 ana_rgc3);
 int mtk_sgmii_setup_mode_an(struct mtk_sgmii *ss, int id);
 int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id,
-			       const struct phylink_link_state *state);
+			       phy_interface_t interface);
+void mtk_sgmii_link_up(struct mtk_sgmii *ss, int id, int speed, int duplex);
 void mtk_sgmii_restart_an(struct mtk_eth *eth, int mac_id);
 
 int mtk_gmac_sgmii_path_setup(struct mtk_eth *eth, int mac_id);
diff --git a/drivers/net/ethernet/mediatek/mtk_sgmii.c b/drivers/net/ethernet/mediatek/mtk_sgmii.c
index 32d83421226a..372c85c830b5 100644
--- a/drivers/net/ethernet/mediatek/mtk_sgmii.c
+++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c
@@ -60,7 +60,7 @@ int mtk_sgmii_setup_mode_an(struct mtk_sgmii *ss, int id)
 }
 
 int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id,
-			       const struct phylink_link_state *state)
+			       phy_interface_t interface)
 {
 	unsigned int val;
 
@@ -69,7 +69,7 @@ int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id,
 
 	regmap_read(ss->regmap[id], ss->ana_rgc3, &val);
 	val &= ~RG_PHY_SPEED_MASK;
-	if (state->interface == PHY_INTERFACE_MODE_2500BASEX)
+	if (interface == PHY_INTERFACE_MODE_2500BASEX)
 		val |= RG_PHY_SPEED_3_125G;
 	regmap_write(ss->regmap[id], ss->ana_rgc3, val);
 
@@ -78,11 +78,33 @@ int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id,
 	val &= ~SGMII_AN_ENABLE;
 	regmap_write(ss->regmap[id], SGMSYS_PCS_CONTROL_1, val);
 
+	if (interface == PHY_INTERFACE_MODE_1000BASEX ||
+	    interface == PHY_INTERFACE_MODE_2500BASEX) {
+		/* SGMII force mode setting */
+		regmap_read(ss->regmap[id], SGMSYS_SGMII_MODE, &val);
+		val &= ~SGMII_IF_MODE_MASK;
+		val |= SGMII_SPEED_1000;
+		val |= SGMII_DUPLEX_FULL;
+		regmap_write(ss->regmap[id], SGMSYS_SGMII_MODE, val);
+	}
+
+	/* Release PHYA power down state */
+	regmap_read(ss->regmap[id], SGMSYS_QPHY_PWR_STATE_CTRL, &val);
+	val &= ~SGMII_PHYA_PWD;
+	regmap_write(ss->regmap[id], SGMSYS_QPHY_PWR_STATE_CTRL, val);
+
+	return 0;
+}
+
+void mtk_sgmii_link_up(struct mtk_sgmii *ss, int id, int speed, int duplex)
+{
+	unsigned int val;
+
 	/* SGMII force mode setting */
 	regmap_read(ss->regmap[id], SGMSYS_SGMII_MODE, &val);
 	val &= ~SGMII_IF_MODE_MASK;
 
-	switch (state->speed) {
+	switch (speed) {
 	case SPEED_10:
 		val |= SGMII_SPEED_10;
 		break;
@@ -95,17 +117,10 @@ int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id,
 		break;
 	}
 
-	if (state->duplex == DUPLEX_FULL)
+	if (duplex == DUPLEX_FULL)
 		val |= SGMII_DUPLEX_FULL;
 
 	regmap_write(ss->regmap[id], SGMSYS_SGMII_MODE, val);
-
-	/* Release PHYA power down state */
-	regmap_read(ss->regmap[id], SGMSYS_QPHY_PWR_STATE_CTRL, &val);
-	val &= ~SGMII_PHYA_PWD;
-	regmap_write(ss->regmap[id], SGMSYS_QPHY_PWR_STATE_CTRL, val);
-
-	return 0;
 }
 
 void mtk_sgmii_restart_an(struct mtk_eth *eth, int mac_id)
