diff --git a/arch/arm/include/asm/arch-imx8m/lpddr4_define.h b/arch/arm/include/asm/arch-imx8m/lpddr4_define.h
new file mode 100644
index 0000000..caf5baf
--- /dev/null
+++ b/arch/arm/include/asm/arch-imx8m/lpddr4_define.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2018 NXP
+ */
+
+#ifndef __LPDDR4_DEFINE_H_
+#define __LPDDR4_DEFINE_H_
+
+#define LPDDR4_DVFS_DBI
+#define DDR_ONE_RANK
+/* #define LPDDR4_DBI_ON */
+#define DFI_BUG_WR
+#define M845S_4GBx2
+#define PRETRAIN
+
+/* DRAM MR setting */
+#ifdef LPDDR4_DBI_ON
+#define LPDDR4_MR3			0xf1
+#define LPDDR4_PHY_DMIPinPresent	0x1
+#else
+#define LPDDR4_MR3			0x31
+#define LPDDR4_PHY_DMIPinPresent	0x0
+#endif
+
+#ifdef DDR_ONE_RANK
+#define LPDDR4_CS			0x1
+#else
+#define LPDDR4_CS			0x3
+#endif
+
+/* PHY training feature */
+#define LPDDR4_HDT_CTL_2D		0xC8
+#define LPDDR4_HDT_CTL_3200_1D		0xC8
+#define LPDDR4_HDT_CTL_400_1D		0xC8
+#define LPDDR4_HDT_CTL_100_1D		0xC8
+
+/* 400/100 training seq */
+#define LPDDR4_TRAIN_SEQ_P2		0x121f
+#define LPDDR4_TRAIN_SEQ_P1		0x121f
+#define LPDDR4_TRAIN_SEQ_P0		0x121f
+#define LPDDR4_TRAIN_SEQ_100		0x121f
+#define LPDDR4_TRAIN_SEQ_400		0x121f
+
+/* 2D share & weight */
+#define LPDDR4_2D_WEIGHT		0x1f7f
+#define LPDDR4_2D_SHARE			1
+#define LPDDR4_CATRAIN_3200_1d		0
+#define LPDDR4_CATRAIN_400		0
+#define LPDDR4_CATRAIN_100		0
+#define LPDDR4_CATRAIN_3200_2d		0
+
+/* MRS parameter */
+/* for LPDDR4 Rtt */
+#define LPDDR4_RTT40			6
+#define LPDDR4_RTT48			5
+#define LPDDR4_RTT60			4
+#define LPDDR4_RTT80			3
+#define LPDDR4_RTT120			2
+#define LPDDR4_RTT240			1
+#define LPDDR4_RTT_DIS			0
+
+/* for LPDDR4 Ron */
+#define LPDDR4_RON34			7
+#define LPDDR4_RON40			6
+#define LPDDR4_RON48			5
+#define LPDDR4_RON60			4
+#define LPDDR4_RON80			3
+
+#define LPDDR4_PHY_ADDR_RON60		0x1
+#define LPDDR4_PHY_ADDR_RON40		0x3
+#define LPDDR4_PHY_ADDR_RON30		0x7
+#define LPDDR4_PHY_ADDR_RON24		0xf
+#define LPDDR4_PHY_ADDR_RON20		0x1f
+
+/* for read channel */
+#define LPDDR4_RON			LPDDR4_RON40
+#define LPDDR4_PHY_RTT			30
+#define LPDDR4_PHY_VREF_VALUE		17
+
+/* for write channel */
+#define LPDDR4_PHY_RON			30
+#define LPDDR4_PHY_ADDR_RON		LPDDR4_PHY_ADDR_RON40
+#define LPDDR4_RTT_DQ			LPDDR4_RTT40
+#define LPDDR4_RTT_CA			LPDDR4_RTT40
+#define LPDDR4_RTT_CA_BANK0		LPDDR4_RTT40
+#define LPDDR4_RTT_CA_BANK1		LPDDR4_RTT40
+#define LPDDR4_VREF_VALUE_CA		((1 << 6) | (0xd))
+#define LPDDR4_VREF_VALUE_DQ_RANK0	((1 << 6) | (0xd))
+#define LPDDR4_VREF_VALUE_DQ_RANK1	((1 << 6) | (0xd))
+#define LPDDR4_MR22_RANK0		((0 << 5) | (1 << 4) | (0 << 3) | \
+					(LPDDR4_RTT40))
+#define LPDDR4_MR22_RANK1		((1 << 5) | (1 << 4) | (1 << 3) | \
+					(LPDDR4_RTT40))
+
+#define LPDDR4_MR3_PU_CAL		1
+
+#endif /* __LPDDR4_DEFINE_H__ */