diff --git a/drivers/renesas/rcar/io/io_memdrv.h b/drivers/renesas/rcar/io/io_memdrv.h
new file mode 100644
index 0000000..41727d3
--- /dev/null
+++ b/drivers/renesas/rcar/io/io_memdrv.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2015-2017, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef IO_MEMDRV_H__
+#define IO_MEMDRV_H__
+
+struct io_dev_connector;
+int32_t rcar_register_io_dev_memdrv(const io_dev_connector_t **connector);
+
+#endif