diff --git a/feed/mtkhnat_util/files/mtkhnat b/feed/mtkhnat_util/files/mtkhnat
index 53e444b..38d3fe2 100755
--- a/feed/mtkhnat_util/files/mtkhnat
+++ b/feed/mtkhnat_util/files/mtkhnat
@@ -6,9 +6,12 @@
 config_get enable global enable 0
 config_get hqos global hqos 0
 config_get txq_num global txq_num 16
+config_get sch_num global sch_num 2
 config_get scheduling global scheduling "wrr"
 config_get sch0_bw global sch0_bw 100000
 config_get sch1_bw global sch1_bw 100000
+config_get sch2_bw global sch2_bw 100000
+config_get sch3_bw global sch3_bw 100000
 
 # disable bridge netfilter module to avoid high cpu usage
 echo 0 > /proc/sys/net/bridge/bridge-nf-call-arptables
@@ -28,8 +31,12 @@
 
 #if enable=0, disable qdma_sch & qdma_txq
 [ "${enable}" -eq 1 ] || {
-	echo 0 ${scheduling} ${sch0_bw} > /sys/kernel/debug/${module}/qdma_sch0
-	echo 0 ${scheduling} ${sch1_bw} > /sys/kernel/debug/${module}/qdma_sch1
+	for i in $(seq 0 $((sch_num - 1)))
+	do
+		eval sch_bw='$sch'$i'_bw'
+		echo 0 ${scheduling} ${sch_bw} > /sys/kernel/debug/${module}/qdma_sch${i}
+	done
+
 	echo 0 0 0 0 0 0 4 > /sys/kernel/debug/${module}/qdma_txq0
 	for i in $(seq 1 $((txq_num - 1)))
 	do
@@ -44,35 +51,36 @@
 
 #if hqos=0, disable qdma_sch & qdma_txq
 [ "${hqos}" -eq 1 ] || {
-	SOC=`cat /proc/device-tree/ethernet*/compatible | cut -c 10-15`
-	DUAL_SCH=$(if [ $SOC = "mt7981" ]; then echo true; fi)
-
-	echo 0 ${scheduling} ${sch0_bw} > /sys/kernel/debug/${module}/qdma_sch0
-	echo 0 ${scheduling} ${sch1_bw} > /sys/kernel/debug/${module}/qdma_sch1
+	for i in $(seq 0 $((sch_num - 1)))
+	do
+		eval sch_bw='$sch'$i'_bw'
+		echo 0 ${scheduling} ${sch_bw} > /sys/kernel/debug/${module}/qdma_sch${i}
+	done
 
 	for i in $(seq 0 $((txq_num - 1)))
 	do
-		if [ "${i}" -le $(((txq_num / 2) - 1)) ] || [ ! $DUAL_SCH ]; then
-			echo 0 0 0 0 0 0 4 > /sys/kernel/debug/${module}/qdma_txq$i
-		else
-			echo 1 0 0 0 0 0 4 > /sys/kernel/debug/${module}/qdma_txq$i
-		fi
+		current_sch=$((${i} / (txq_num / sch_num)))
+		echo ${current_sch} 0 0 0 0 0 4 > /sys/kernel/debug/${module}/qdma_txq$i
 	done
 
 	exit 0
 }
 
-# enable qdma_sch0 and qdma_sch1
-echo 1 ${scheduling} ${sch0_bw} > /sys/kernel/debug/${module}/qdma_sch0
-echo 1 ${scheduling} ${sch1_bw} > /sys/kernel/debug/${module}/qdma_sch1
+# enable qdma_sch
+for i in $(seq 0 $((sch_num - 1)))
+do
+	eval sch_bw='$sch'$i'_bw'
+	echo 1 ${scheduling} ${sch_bw} > /sys/kernel/debug/${module}/qdma_sch${i}
+done
 
 # enable bridge netfilter module to allow skb being marked
 echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables
 echo 1 > /proc/sys/net/bridge/bridge-nf-call-ip6tables
 
 setup_queue() {
-	local queue_id queue_scheduler queue_minebl queue_maxebl
+	local queue_id queue_minebl queue_maxebl
 	local queue_minrate queue_maxrate queue_resv minrate maxrate queue_weight
+	local current_sch
 
 	config_get queue_id $1 id 0
 	config_get queue_minrate $1 minrate 0
@@ -86,37 +94,24 @@
 	# start to set per queue config
 	queue_minebl=1
 	queue_maxebl=1
-	queue_scheduler=0
 
 	# if min rate = 0, set min enable = 0
 	# if max rate = 0, set max enable = 0
 	[ "${queue_minrate}" -eq 0 ] && queue_minebl=0
 	[ "${queue_maxrate}" -eq 0 ] && queue_maxebl=0
 
-	# calculate min rate according to sch0_bw
-	minrate=$((sch0_bw * $queue_minrate))
-	minrate=$((minrate / 100))
-
-	# calculate max rate according to sch0_bw
-	maxrate=$((sch0_bw * $queue_maxrate))
-	maxrate=$((maxrate / 100))
-
-	# set the queue of sch0 group(the lower half of total queues)
-	[ "${queue_id}" -le $(((txq_num / 2) - 1)) ] && \
-	echo 0 ${queue_minebl} ${minrate} ${queue_maxebl} ${maxrate} ${queue_weight} \
-		${queue_resv} > /sys/kernel/debug/${module}/qdma_txq${queue_id}
+	# get current scheduler id
+	current_sch=$((${queue_id} / (txq_num / sch_num)))
 
-	# calculate min rate according to sch1_bw
-	minrate=$((sch1_bw * $queue_minrate))
+	# calculate min rate according to schx_bw
+	minrate=$((sch${current_sch}_bw * $queue_minrate))
 	minrate=$((minrate / 100))
 
-	# calculate max rate according to sch1_bw
-	maxrate=$((sch1_bw * $queue_maxrate))
+	# calculate max rate according to schx_bw
+	maxrate=$((sch${current_sch}_bw * $queue_maxrate))
 	maxrate=$((maxrate / 100))
 
-	# set the queue of sch1 group(the upper half of total queues)
-	[ "${queue_id}" -gt $(((txq_num / 2) - 1)) ] && \
-	echo 1 ${queue_minebl} ${minrate} ${queue_maxebl} ${maxrate} ${queue_weight} \
+	echo ${current_sch} ${queue_minebl} ${minrate} ${queue_maxebl} ${maxrate} ${queue_weight} \
 		${queue_resv} > /sys/kernel/debug/${module}/qdma_txq${queue_id}
 }
 
diff --git a/feed/mtkhnat_util/files/mtkhnat.config b/feed/mtkhnat_util/files/mtkhnat.config
index f252a98..b5a29e4 100755
--- a/feed/mtkhnat_util/files/mtkhnat.config
+++ b/feed/mtkhnat_util/files/mtkhnat.config
@@ -1,23 +1,29 @@
 ####################################################################
 #	hqos: 1:ON, 0:OFF                                          #
 #	txq_num: 16:default (only supports 64 queues for MT7622)   #
+#	sch_num: 2 or 4 (only supports 2 schedulers for MT7622)    #
 #	scheduling: wrr: weighted round-robin, sp: strict priority #
 #	sch0_bw: sch0 bandwidth (unit:Kbps)                        #
 #	sch1_bw: sch1 bandwidth (unit:Kbps)                        #
+#	sch2_bw: sch2 bandwidth (unit:Kbps)                        #
+#	sch3_bw: sch3 bandwidth (unit:Kbps)                        #
 ####################################################################
 config global global
 	option enable 1
 	option hqos 0
 	option txq_num 16
+	option sch_num 2
 	option scheduling 'wrr'
 	option sch0_bw 1000000
 	option sch1_bw 1000000
+	option sch2_bw 1000000
+	option sch3_bw 1000000
 
 ####################################################################
 #	id: queue id                                               #
 #	minrate: percentage of min rate limit                      #
 #	maxrate: percentage of max rate limit                      #
-#	weight: weight for queue schedule                          #
+#	weight: weight for queue schedule (only for wrr)           #
 #	resv: buffer reserved for HW/SW path                       #
 ####################################################################
 config queue