diff --git a/plat/mediatek/mt8188/plat_mmap.c b/plat/mediatek/mt8188/plat_mmap.c
new file mode 100644
index 0000000..0d4cbe8
--- /dev/null
+++ b/plat/mediatek/mt8188/plat_mmap.c
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+#include <mtk_mmap_pool.h>
+#include <platform_def.h>
+
+static const mmap_region_t plat_mmap[] = {
+	MAP_REGION_FLAT(MTK_DEV_RNG0_BASE, MTK_DEV_RNG0_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(MTK_DEV_RNG1_BASE, MTK_DEV_RNG1_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	{ 0 }
+};
+DECLARE_MTK_MMAP_REGIONS(plat_mmap);