diff --git a/devicemodel/core/main.c b/devicemodel/core/main.c
index a850b06d6..3141b031c 100644
--- a/devicemodel/core/main.c
+++ b/devicemodel/core/main.c
@@ -149,7 +149,7 @@ usage(int code)
 		"       %*s [--vtpm2 sock_path] [--virtio_poll interval] [--mac_seed seed_string]\n"
 		"       %*s [--cpu_affinity pCPUs] [--lapic_pt] [--rtvm] [--windows]\n"
 		"       %*s [--debugexit] [--logger_setting param_setting]\n"
-		"       %*s [--pm_notify_channel] [--pm_by_vuart vuart_node]\n"
+		"       %*s [--pm_notify_channel channel] [--pm_by_vuart vuart_node]\n"
 		"       %*s [--ssram] <vm>\n"
 		"       -A: create ACPI tables\n"
 		"       -B: bootargs for kernel\n"
@@ -433,8 +433,10 @@ guest_pm_notify_init(struct vmctx *ctx)
 		ioc_init(ctx);
 	else if (PWR_EVENT_NOTIFY_PWR_BT == pm_notify_channel)
 		power_button_init(ctx);
-	else if (PWR_EVENT_NOTIFY_UART == pm_notify_channel)
-		ret = pm_by_vuart_init(ctx);
+	else if (PWR_EVENT_NOTIFY_UART == pm_notify_channel ||
+		 PWR_EVENT_NOTIFY_UART_TRIG_PLAT_S5 == pm_notify_channel)
+		ret = pm_by_vuart_init(ctx,
+			(PWR_EVENT_NOTIFY_UART_TRIG_PLAT_S5 == pm_notify_channel));
 	else
 		pr_info("No pm notify channel given\n");
 
@@ -448,7 +450,8 @@ guest_pm_notify_deinit(struct vmctx *ctx)
 		ioc_deinit(ctx);
 	else if (PWR_EVENT_NOTIFY_PWR_BT == pm_notify_channel)
 		power_button_deinit(ctx);
-	else if (PWR_EVENT_NOTIFY_UART == pm_notify_channel)
+	else if (PWR_EVENT_NOTIFY_UART == pm_notify_channel ||
+		 PWR_EVENT_NOTIFY_UART_TRIG_PLAT_S5 == pm_notify_channel)
 		pm_by_vuart_deinit(ctx);
 	else
 		pr_err("No correct pm notify channel given\n");
@@ -968,13 +971,20 @@ main(int argc, char *argv[])
 				errx(EX_USAGE, "invalid logger setting params %s", optarg);
 			break;
 		case CMD_OPT_PM_NOTIFY_CHANNEL:
-			if (strncmp("ioc", optarg, 3) == 0)
+			if (strncmp("ioc", optarg, sizeof("ioc")) == 0)
 				pm_notify_channel = PWR_EVENT_NOTIFY_IOC;
-			else if (strncmp("power_button", optarg, 12) == 0)
+			else if (strncmp("power_button", optarg, sizeof("power_button")) == 0)
 				pm_notify_channel = PWR_EVENT_NOTIFY_PWR_BT;
-			else if (strncmp("uart", optarg, 4) == 0)
-				pm_notify_channel = PWR_EVENT_NOTIFY_UART;
-
+			else if (strncmp("uart", optarg, sizeof("uart") - 1) == 0) {
+				if (optarg[sizeof("uart") - 1] == '\0')
+					pm_notify_channel = PWR_EVENT_NOTIFY_UART;
+				else if (strncmp(",allow_trigger_s5", optarg + sizeof("uart") - 1,
+						sizeof(",allow_trigger_s5")) == 0)
+					pm_notify_channel = PWR_EVENT_NOTIFY_UART_TRIG_PLAT_S5;
+				else
+					errx(EX_USAGE, "invalid pm_notify_channel: %s", optarg);
+			} else
+				errx(EX_USAGE, "invalid pm_notify_channel: %s", optarg);
 			break;
 		case CMD_OPT_PM_BY_VUART:
 			if (parse_pm_by_vuart(optarg) != 0)
diff --git a/devicemodel/core/pm_vuart.c b/devicemodel/core/pm_vuart.c
index 28e91aaed..f4aff9a93 100644
--- a/devicemodel/core/pm_vuart.c
+++ b/devicemodel/core/pm_vuart.c
@@ -46,6 +46,7 @@ enum node_type_t {
 	MAX_NODE_CNT,
 };
 
+static bool allow_trigger_s5;
 static uint8_t node_index = MAX_NODE_CNT;
 static char node_path[MAX_NODE_PATH];
 static int node_fd = -1;
@@ -265,11 +266,13 @@ static int set_tty_attr(int fd, int speed)
 	return 0;
 }
 
-int pm_by_vuart_init(struct vmctx *ctx)
+int pm_by_vuart_init(struct vmctx *ctx, bool trigger_s5)
 {
 	assert(node_index < MAX_NODE_CNT);
 
-	pr_info("%s idx: %d, path: %s\r\n", __func__, node_index, node_path);
+	allow_trigger_s5 = trigger_s5;
+	pr_info("%s: allow_trigger_s5: %u, idx: %u, path: %s\r\n",
+			__func__, trigger_s5, node_index, node_path);
 
 	if (node_index == PTY_NODE)
 		node_fd = pty_open_virtual_uart(node_path);
@@ -290,7 +293,7 @@ int pm_by_vuart_init(struct vmctx *ctx)
 		return -1;
 	}
 
-	if (start_pm_monitor_thread()) {
+	if (trigger_s5 && start_pm_monitor_thread()) {
 		close(node_fd);
 		node_fd = -1;
 		return -1;
@@ -301,12 +304,14 @@ int pm_by_vuart_init(struct vmctx *ctx)
 
 void pm_by_vuart_deinit(struct vmctx *ctx)
 {
-	pthread_cancel(pm_monitor_thread);
-	pthread_join(pm_monitor_thread, NULL);
+	if (allow_trigger_s5) {
+		pthread_cancel(pm_monitor_thread);
+		pthread_join(pm_monitor_thread, NULL);
+		close(socket_fd);
+		socket_fd = -1;
+	}
 	close(node_fd);
 	node_fd = -1;
-	close(socket_fd);
-	socket_fd = -1;
 }
 
 /* called when acrn-dm receive stop command */
diff --git a/devicemodel/include/pm.h b/devicemodel/include/pm.h
index ad9903494..d35275d20 100644
--- a/devicemodel/include/pm.h
+++ b/devicemodel/include/pm.h
@@ -5,9 +5,10 @@
 #ifndef	_DM_INCLUDE_PM_
 #define	_DM_INCLUDE_PM_
 
-#define	PWR_EVENT_NOTIFY_IOC	0x1
-#define	PWR_EVENT_NOTIFY_PWR_BT	0x2
-#define	PWR_EVENT_NOTIFY_UART	0x3
+#define	PWR_EVENT_NOTIFY_IOC			0x1
+#define	PWR_EVENT_NOTIFY_PWR_BT			0x2
+#define	PWR_EVENT_NOTIFY_UART			0x3
+#define	PWR_EVENT_NOTIFY_UART_TRIG_PLAT_S5	0x4
 
 int wait_for_resume(struct vmctx *ctx);
 int vm_resume(struct vmctx *ctx);
diff --git a/devicemodel/include/pm_vuart.h b/devicemodel/include/pm_vuart.h
index a2da149b6..8368d9ed6 100644
--- a/devicemodel/include/pm_vuart.h
+++ b/devicemodel/include/pm_vuart.h
@@ -12,7 +12,7 @@
 #define	__PM_VUART__
 
 int parse_pm_by_vuart(const char *opts);
-int pm_by_vuart_init(struct vmctx *ctx);
+int pm_by_vuart_init(struct vmctx *ctx, bool trigger_s5);
 void pm_by_vuart_deinit(struct vmctx *ctx);
 
 #endif