diff --git a/plat/mediatek/mt8186/include/plat_pm.h b/plat/mediatek/mt8186/include/plat_pm.h
new file mode 100644
index 0000000..436db34
--- /dev/null
+++ b/plat/mediatek/mt8186/include/plat_pm.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2021, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLAT_PM_H
+#define PLAT_PM_H
+
+#include <lib/utils_def.h>
+
+#define MT_PLAT_PWR_STATE_CPU			U(1)
+#define MT_PLAT_PWR_STATE_CLUSTER		U(2)
+#define MT_PLAT_PWR_STATE_MCUSYS		U(3)
+#define MT_PLAT_PWR_STATE_SUSPEND2IDLE		U(8)
+#define MT_PLAT_PWR_STATE_SYSTEM_SUSPEND	U(9)
+
+#define MTK_LOCAL_STATE_RUN			U(0)
+#define MTK_LOCAL_STATE_RET			U(1)
+#define MTK_LOCAL_STATE_OFF			U(2)
+
+#define MTK_AFFLVL_CPU				U(0)
+#define MTK_AFFLVL_CLUSTER			U(1)
+#define MTK_AFFLVL_MCUSYS			U(2)
+#define MTK_AFFLVL_SYSTEM			U(3)
+
+#define IS_CLUSTER_OFF_STATE(s)					\
+		is_local_state_off(s->pwr_domain_state[MTK_AFFLVL_CLUSTER])
+#define IS_MCUSYS_OFF_STATE(s)					\
+		is_local_state_off(s->pwr_domain_state[MTK_AFFLVL_MCUSYS])
+#define IS_SYSTEM_SUSPEND_STATE(s)				\
+		is_local_state_off(s->pwr_domain_state[MTK_AFFLVL_SYSTEM])
+
+#define IS_PLAT_SUSPEND_ID(stateid)				\
+		((stateid == MT_PLAT_PWR_STATE_SUSPEND2IDLE)	\
+		|| (stateid == MT_PLAT_PWR_STATE_SYSTEM_SUSPEND))
+
+#endif /* PLAT_PM_H */