diff --git a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 3cd1e3b..9789b28 100755
--- a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -2937,8 +2937,11 @@
 		/* PSE Free Queue Flow Control  */
 		mtk_w32(eth, 0x01fa01f4, PSE_FQFC_CFG2);
 
-		/* PSE should not drop port8 and port9 packets */
-		mtk_w32(eth, 0x00000300, PSE_DROP_CFG);
+		/* PSE should not drop port8 and port9 packets from WDMA Tx */
+		mtk_w32(eth, 0x00000300, PSE_NO_DROP_CFG);
+
+		/* PSE should drop p8 and p9 packets when WDMA Rx ring full*/
+		mtk_w32(eth, 0x00000300, PSE_PPE0_DROP);
 
 		/* PSE config input queue threshold */
 		mtk_w32(eth, 0x001a000e, PSE_IQ_REV(1));
diff --git a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index b6380ff..d74107b 100755
--- a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -124,7 +124,8 @@
 /* PSE Free Queue Flow Control  */
 #define PSE_FQFC_CFG1		0x100
 #define PSE_FQFC_CFG2		0x104
-#define PSE_DROP_CFG		0x108
+#define PSE_NO_DROP_CFG		0x108
+#define PSE_PPE0_DROP		0x110
 
 /* PSE Input Queue Reservation Register*/
 #define PSE_IQ_REV(x)		(0x140 + ((x - 1) * 0x4))