diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7621.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7621.c
index e4ba4b2c2e..9ad0237efe 100644
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7621.c
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7621.c
@@ -98,9 +98,15 @@ static void mt7621_hw_init(struct mt7620_gsw *gsw, struct device_node *np)
 	mt7530_mdio_w32(gsw, 0x7000, 0x3);
 	usleep_range(10, 20);
 
-	/* (GE1, Force 1000M/FD, FC OFF, MAX_RX_LENGTH 1536) */
-	mtk_switch_w32(gsw, 0x2305e30b, GSW_REG_MAC_P0_MCR);
-	mt7530_mdio_w32(gsw, 0x3600, 0x5e30b);
+	if ((rt_sysc_r32(SYSC_REG_CHIP_REV_ID) & 0xFFFF) == 0x0101) {
+		/* (GE1, Force 1000M/FD, FC ON, MAX_RX_LENGTH 1536) */
+		mtk_switch_w32(gsw, 0x2305e30b, GSW_REG_MAC_P0_MCR);
+		mt7530_mdio_w32(gsw, 0x3600, 0x5e30b);
+	} else {
+		/* (GE1, Force 1000M/FD, FC ON, MAX_RX_LENGTH 1536) */
+		mtk_switch_w32(gsw, 0x2305e33b, GSW_REG_MAC_P0_MCR);
+		mt7530_mdio_w32(gsw, 0x3600, 0x5e33b);
+	}
 
 	/* (GE2, Link down) */
 	mtk_switch_w32(gsw, 0x8000, GSW_REG_MAC_P1_MCR);