--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 MediaTek Inc.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#ifndef _MTMIPS_SERIAL_H_
+#define _MTMIPS_SERIAL_H_
+
+void mtmips_spl_serial_init(void);
+
+#endif /* _MTMIPS_SERIAL_H_ */