diff --git a/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h b/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h
new file mode 100644
index 0000000..59c1891
--- /dev/null
+++ b/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2017 NXP
+ * Copyright 2020 Linaro
+ *
+ */
+
+#ifndef __COMPULAB_DDR_H__
+#define __COMPULAB_DDR_H__
+
+extern struct dram_timing_info ucm_dram_timing_ff020008;
+extern struct dram_timing_info ucm_dram_timing_ff000110;
+extern struct dram_timing_info ucm_dram_timing_01061010;
+
+void spl_dram_init_compulab(void);
+
+#define TCM_DATA_CFG 0x7e0000
+
+struct lpddr4_tcm_desc {
+	unsigned int size;
+	unsigned int sign;
+	unsigned int index;
+	unsigned int count;
+};
+
+#endif