diff --git a/plat/mediatek/mt8186/include/plat_sip_calls.h b/plat/mediatek/mt8186/include/plat_sip_calls.h
new file mode 100644
index 000000000..598a5b8c9
--- /dev/null
+++ b/plat/mediatek/mt8186/include/plat_sip_calls.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2021, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLAT_SIP_CALLS_H
+#define PLAT_SIP_CALLS_H
+
+/*******************************************************************************
+ * Plat SiP function constants
+ ******************************************************************************/
+#define MTK_PLAT_SIP_NUM_CALLS    0
+
+#endif /* PLAT_SIP_CALLS_H */
diff --git a/plat/mediatek/mt8186/plat_sip_calls.c b/plat/mediatek/mt8186/plat_sip_calls.c
new file mode 100644
index 000000000..716f3d9d8
--- /dev/null
+++ b/plat/mediatek/mt8186/plat_sip_calls.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2021, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <common/runtime_svc.h>
+
+uintptr_t mediatek_plat_sip_handler(uint32_t smc_fid,
+				u_register_t x1,
+				u_register_t x2,
+				u_register_t x3,
+				u_register_t x4,
+				void *cookie,
+				void *handle,
+				u_register_t flags)
+{
+	switch (smc_fid) {
+	default:
+		ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
+		break;
+	}
+
+	SMC_RET1(handle, SMC_UNK);
+}
diff --git a/plat/mediatek/mt8186/platform.mk b/plat/mediatek/mt8186/platform.mk
index d7ed8f949..32755baad 100644
--- a/plat/mediatek/mt8186/platform.mk
+++ b/plat/mediatek/mt8186/platform.mk
@@ -32,6 +32,7 @@ BL31_SOURCES += common/desc_image_load.c                              \
                 plat/common/plat_gicv3.c                              \
                 ${MTK_PLAT}/common/drivers/pmic_wrap/pmic_wrap_init.c \
                 ${MTK_PLAT}/common/mtk_plat_common.c                  \
+                ${MTK_PLAT}/common/mtk_sip_svc.c                      \
                 ${MTK_PLAT}/common/params_setup.c                     \
                 ${MTK_PLAT}/common/drivers/timer/mt_timer.c           \
                 ${MTK_PLAT_SOC}/aarch64/platform_common.c             \
@@ -40,6 +41,7 @@ BL31_SOURCES += common/desc_image_load.c                              \
                 ${MTK_PLAT_SOC}/drivers/emi_mpu/emi_mpu.c             \
                 ${MTK_PLAT_SOC}/drivers/pmic/pmic.c                   \
                 ${MTK_PLAT_SOC}/plat_pm.c                             \
+                ${MTK_PLAT_SOC}/plat_sip_calls.c                      \
                 ${MTK_PLAT_SOC}/plat_topology.c
 
 # Configs for A76 and A55