diff --git a/plat/imx/imx8m/imx8mm/include/imx8mm_private.h b/plat/imx/imx8m/imx8mm/include/imx8mm_private.h
new file mode 100644
index 000000000..52d13f031
--- /dev/null
+++ b/plat/imx/imx8m/imx8mm/include/imx8mm_private.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef IMX8MM_PRIVATE_H
+#define IMX8MM_PRIVATE_H
+
+/*******************************************************************************
+ * Function and variable prototypes
+ ******************************************************************************/
+void plat_imx8mm_io_setup(void);
+
+#endif /* IMX8MM_PRIVATE_H */