--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ * Author: Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
+ */
+
+#ifndef __MDP_REG_OVL_H__
+#define __MDP_REG_OVL_H__
+
+#define MDP_OVL_EN (0x00c)
+#define MDP_OVL_ROI_SIZE (0x020)
+#define MDP_OVL_DP_CON (0x024)
+#define MDP_OVL_SRC_CON (0x02c)
+#define MDP_OVL_L0_CON (0x030)
+#define MDP_OVL_L0_SRC_SIZE (0x038)
+
+/* MASK */
+#define MDP_OVL_DP_CON_MASK (0x0FFFFFFF)
+#define MDP_OVL_EN_MASK (0xB07D07B1)
+#define MDP_OVL_L0_CON_MASK (0xFFFFFFFF)
+#define MDP_OVL_L0_SRC_SIZE_MASK (0x1FFF1FFF)
+#define MDP_OVL_ROI_SIZE_MASK (0x1FFF1FFF)
+#define MDP_OVL_SRC_CON_MASK (0x0000031F)
+
+#endif //__MDP_REG_OVL_H__