diff --git a/plat/mediatek/mt8186/drivers/spm/notifier/mt_spm_notifier.h b/plat/mediatek/mt8186/drivers/spm/notifier/mt_spm_notifier.h
new file mode 100644
index 0000000..89aa163
--- /dev/null
+++ b/plat/mediatek/mt8186/drivers/spm/notifier/mt_spm_notifier.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MT_SPM_SSPM_NOTIFIER_H
+#define MT_SPM_SSPM_NOTIFIER_H
+
+enum MT_SPM_SSPM_NOTIFY_ID {
+	MT_SPM_NOTIFY_LP_ENTER			= 0U,
+	MT_SPM_NOTIFY_LP_LEAVE			= 1U,
+	MT_SPM_NOTIFY_SUSPEND_VCORE_VOLTAGE	= 2U,
+};
+
+int mt_spm_sspm_notify(int type, unsigned int lp_mode);
+
+static inline int mt_spm_sspm_notify_u32(int type, unsigned int lp_mode)
+{
+	return mt_spm_sspm_notify(type, lp_mode);
+}
+
+#endif /* MT_SPM_SSPM_NOTIFIER_H */
diff --git a/plat/mediatek/mt8186/drivers/spm/notifier/mt_spm_sspm_intc.h b/plat/mediatek/mt8186/drivers/spm/notifier/mt_spm_sspm_intc.h
new file mode 100644
index 0000000..0b85c60
--- /dev/null
+++ b/plat/mediatek/mt8186/drivers/spm/notifier/mt_spm_sspm_intc.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MT_SPM_SSPM_INTC_H
+#define MT_SPM_SSPM_INTC_H
+
+#include <mt_spm_reg.h>
+
+#define MT_SPM_SSPM_INTC_SEL_0	(0x10)
+#define MT_SPM_SSPM_INTC_SEL_1	(0x20)
+#define MT_SPM_SSPM_INTC_SEL_2	(0x40)
+#define MT_SPM_SSPM_INTC_SEL_3	(0x80)
+
+#define MT_SPM_SSPM_INTC_TRIGGER(id, sg) \
+	(((0x10 << id) | (sg << id)) & 0xff)
+
+#define MT_SPM_SSPM_INTC0_HIGH	MT_SPM_SSPM_INTC_TRIGGER(0, 1)
+#define MT_SPM_SSPM_INTC0_LOW	MT_SPM_SSPM_INTC_TRIGGER(0, 0)
+#define MT_SPM_SSPM_INTC1_HIGH	MT_SPM_SSPM_INTC_TRIGGER(1, 1)
+#define MT_SPM_SSPM_INTC1_LOW	MT_SPM_SSPM_INTC_TRIGGER(1, 0)
+#define MT_SPM_SSPM_INTC2_HIGH	MT_SPM_SSPM_INTC_TRIGGER(2, 1)
+#define MT_SPM_SSPM_INTC2_LOW	MT_SPM_SSPM_INTC_TRIGGER(2, 0)
+#define MT_SPM_SSPM_INTC3_HIGH	MT_SPM_SSPM_INTC_TRIGGER(3, 1)
+#define MT_SPM_SSPM_INTC3_LOW	MT_SPM_SSPM_INTC_TRIGGER(3, 0)
+
+/*
+ * mt8186 use cpc pbi as notify.
+ * Therefore, it won't need be notified by spm driver.
+ */
+#define DO_SPM_SSPM_LP_SUSPEND()
+#define DO_SPM_SSPM_LP_RESUME()
+
+#endif /* MT_SPM_SSPM_INTC_H */
diff --git a/plat/mediatek/mt8186/drivers/spm/notifier/mt_spm_sspm_notifier.c b/plat/mediatek/mt8186/drivers/spm/notifier/mt_spm_sspm_notifier.c
new file mode 100644
index 0000000..198bac5
--- /dev/null
+++ b/plat/mediatek/mt8186/drivers/spm/notifier/mt_spm_sspm_notifier.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stddef.h>
+#include <lib/mmio.h>
+
+#include <mt_spm_notifier.h>
+#include <mt_spm_sspm_intc.h>
+#include <sspm_reg.h>
+
+#define MT_SPM_SSPM_MBOX_OFF(x)		(SSPM_MBOX_3_BASE + x)
+#define MT_SPM_MBOX(slot)		MT_SPM_SSPM_MBOX_OFF((slot << 2UL))
+
+#define SSPM_MBOX_SPM_LP_LOOKUP1	MT_SPM_MBOX(0)
+#define SSPM_MBOX_SPM_LP_LOOKUP2	MT_SPM_MBOX(1)
+#define SSPM_MBOX_SPM_LP1		MT_SPM_MBOX(2)
+#define SSPM_MBOX_SPM_LP2		MT_SPM_MBOX(3)
+
+int mt_spm_sspm_notify(int type, unsigned int lp_mode)
+{
+	switch (type) {
+	case MT_SPM_NOTIFY_LP_ENTER:
+		mmio_write_32(SSPM_MBOX_SPM_LP1, lp_mode);
+		DO_SPM_SSPM_LP_SUSPEND();
+		break;
+	case MT_SPM_NOTIFY_LP_LEAVE:
+		mmio_write_32(SSPM_MBOX_SPM_LP1, lp_mode);
+		DO_SPM_SSPM_LP_RESUME();
+		break;
+	case MT_SPM_NOTIFY_SUSPEND_VCORE_VOLTAGE:
+		mmio_write_32(SSPM_MBOX_SPM_LP2, lp_mode);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}