#ifndef __DTS_IOMMU_PORT_MT2712_H
#define __DTS_IOMMU_PORT_MT2712_H
-#define MTK_M4U_ID(larb, port) (((larb) << 5) | (port))
+#include <dt-bindings/memory/mtk-memory-port.h>
#define M4U_LARB0_ID 0
#define M4U_LARB1_ID 1
#ifndef _DTS_IOMMU_PORT_MT6779_H_
#define _DTS_IOMMU_PORT_MT6779_H_
-#define MTK_M4U_ID(larb, port) (((larb) << 5) | (port))
+#include <dt-bindings/memory/mtk-memory-port.h>
#define M4U_LARB0_ID 0
#define M4U_LARB1_ID 1
#ifndef __DTS_IOMMU_PORT_MT8167_H
#define __DTS_IOMMU_PORT_MT8167_H
-#define MTK_M4U_ID(larb, port) (((larb) << 5) | (port))
+#include <dt-bindings/memory/mtk-memory-port.h>
#define M4U_LARB0_ID 0
#define M4U_LARB1_ID 1
#ifndef __DTS_IOMMU_PORT_MT8173_H
#define __DTS_IOMMU_PORT_MT8173_H
-#define MTK_M4U_ID(larb, port) (((larb) << 5) | (port))
+#include <dt-bindings/memory/mtk-memory-port.h>
#define M4U_LARB0_ID 0
#define M4U_LARB1_ID 1
#ifndef __DTS_IOMMU_PORT_MT8183_H
#define __DTS_IOMMU_PORT_MT8183_H
-#define MTK_M4U_ID(larb, port) (((larb) << 5) | (port))
+#include <dt-bindings/memory/mtk-memory-port.h>
#define M4U_LARB0_ID 0
#define M4U_LARB1_ID 1
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2020 MediaTek Inc.
+ * Author: Yong Wu <yong.wu@mediatek.com>
+ */
+#ifndef __DT_BINDINGS_MEMORY_MTK_MEMORY_PORT_H_
+#define __DT_BINDINGS_MEMORY_MTK_MEMORY_PORT_H_
+
+#define MTK_LARB_NR_MAX 16
+
+#define MTK_M4U_ID(larb, port) (((larb) << 5) | (port))
+#define MTK_M4U_TO_LARB(id) (((id) >> 5) & 0xf)
+#define MTK_M4U_TO_PORT(id) ((id) & 0x1f)
+
+#endif