diff --git a/arch/arm/dts/rk3399-sdram-lpddr3-4GB-1600.dtsi b/arch/arm/dts/rk3399-sdram-lpddr3-4GB-1600.dtsi
new file mode 100644
index 0000000000..65dfc3806c
--- /dev/null
+++ b/arch/arm/dts/rk3399-sdram-lpddr3-4GB-1600.dtsi
@@ -0,0 +1,1536 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+&dmc {
+	rockchip,sdram-params = <
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+		0x02700270
+		0x02700270
+		0x02700270
+		0x02700270
+		0x00000270
+		0x00000000
+		0x00000000
+		0x00000000
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+		0x00800000
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+		0x00800080
+		0x00800080
+		0x00800080
+		0x00800080
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+		0x00b30080
+		0x00000003
+		0x00000000
+		0x00020000
+		0x00000200
+		0x00000000
+		0x51315152
+		0xc0013150
+		0x020000c0
+		0x00100001
+		0x07054208
+		0x000f0c18
+		0x01000140
+		0x00000c20
+		0x00000000
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+		0x0004c008
+		0x000000b3
+		0x00000000
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+		0x00010000
+		0x01665555
+		0x00665555
+		0x00010f00
+		0x05010200
+		0x00000003
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+		0x00cc0101
+		0x00030066
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+		0x08000000
+		0x0c00c007
+		0x00000100
+		0x00000100
+		0x55555555
+		0xaaaaaaaa
+		0x55555555
+		0xaaaaaaaa
+		0x00005555
+		0x00000000
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+		0x00200000
+		0x00000000
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+		0x00000000
+		0x00000000
+		0x00000000
+		0x02700270
+		0x02700270
+		0x02700270
+		0x02700270
+		0x00000270
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00800000
+		0x00800080
+		0x00800080
+		0x00800080
+		0x00800080
+		0x00800080
+		0x00800080
+		0x00800080
+		0x00800080
+		0x00b30080
+		0x00000003
+		0x00000000
+		0x00020000
+		0x00000200
+		0x00000000
+		0x51315152
+		0xc0013150
+		0x020000c0
+		0x00100001
+		0x07054208
+		0x000f0c18
+		0x01000140
+		0x00000c20
+		0x00000000
+		0x00000000
+		0x00000000
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+		0x00000001
+		0x00000000
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+		0x00400320
+		0x00000040
+		0x00806420
+		0x00917531
+		0x00806420
+		0x01917531
+		0x00020003
+		0x00000000
+		0x00000000
+		0x00000000
+		0x000556aa
+		0x000aaaaa
+		0x000aa955
+		0x00055555
+		0x000b3133
+		0x0004cd33
+		0x0004cecc
+		0x000b32cc
+		0x0a418820
+		0x103f0000
+		0x0000003f
+		0x00038055
+		0x03800380
+		0x03800380
+		0x00000380
+		0x42080010
+		0x00000003
+		0x00000000
+		0x00000000
+		0x00000000
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+		0x00000000
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+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00800000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000001
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00400320
+		0x00000040
+		0x00008eca
+		0x00009fdb
+		0x00008eca
+		0x01009fdb
+		0x00020003
+		0x00000000
+		0x00000000
+		0x00000000
+		0x000556aa
+		0x000aaaaa
+		0x000aa955
+		0x00055555
+		0x000b3133
+		0x0004cd33
+		0x0004cecc
+		0x000b32cc
+		0x0004a0e6
+		0x080f0000
+		0x0000000f
+		0x00038055
+		0x03800380
+		0x03800380
+		0x00000380
+		0x42080010
+		0x00000003
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
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+		0x00000000
+		0x00000000
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+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
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+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
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+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
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+		0x00000000
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+		0x00800000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000001
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00400320
+		0x00000040
+		0x00008eca
+		0x00009fdb
+		0x00008eca
+		0x01009fdb
+		0x00020003
+		0x00000000
+		0x00000000
+		0x00000000
+		0x000556aa
+		0x000aaaaa
+		0x000aa955
+		0x00055555
+		0x000b3133
+		0x0004cd33
+		0x0004cecc
+		0x000b32cc
+		0x1ee6b16a
+		0x10000000
+		0x00000000
+		0x00038055
+		0x03800380
+		0x03800380
+		0x00000380
+		0x42080010
+		0x00000003
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
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+		0x00000000
+		0x00000000
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+		0x00000000
+		0x00000000
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+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000001
+		0x00000000
+		0x01000005
+		0x04000f00
+		0x00020040
+		0x00020055
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000050
+		0x00000000
+		0x00010100
+		0x00000601
+		0x00000000
+		0x00006400
+		0x01221102
+		0x00000000
+		0x00051f00
+		0x051f051f
+		0x051f051f
+		0x00030003
+		0x03000300
+		0x00000300
+		0x01221102
+		0x00000000
+		0x00000000
+		0x03020000
+		0x00000001
+		0x00000011
+		0x00000011
+		0x00000400
+		0x00000000
+		0x00000011
+		0x00000011
+		0x00004410
+		0x00004410
+		0x00004410
+		0x00004410
+		0x00004410
+		0x00000011
+		0x00004410
+		0x00000011
+		0x00004410
+		0x00000011
+		0x00004410
+		0x00000000
+		0x00000000
+		0x00000000
+		0x04000000
+		0x00000000
+		0x00000000
+		0x00000508
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0x00000000
+		0xe4000000
+		0x00000000
+		0x00000000
+		0x01010000
+		0x00000000
+	>;
+};
diff --git a/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h b/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
new file mode 100644
index 0000000000..22a6ca9ae1
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2016-2017 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_SDRAM_RK3399_H
+#define _ASM_ARCH_SDRAM_RK3399_H
+
+enum {
+	DDR3 = 0x3,
+	LPDDR2 = 0x5,
+	LPDDR3 = 0x6,
+	LPDDR4 = 0x7,
+	UNUSED = 0xFF
+};
+
+struct rk3399_ddr_pctl_regs {
+	u32 denali_ctl[332];
+};
+
+struct rk3399_ddr_publ_regs {
+	u32 denali_phy[959];
+};
+
+struct rk3399_ddr_pi_regs {
+	u32 denali_pi[200];
+};
+
+struct rk3399_msch_regs {
+	u32 coreid;
+	u32 revisionid;
+	u32 ddrconf;
+	u32 ddrsize;
+	u32 ddrtiminga0;
+	u32 ddrtimingb0;
+	u32 ddrtimingc0;
+	u32 devtodev0;
+	u32 reserved0[(0x110 - 0x20) / 4];
+	u32 ddrmode;
+	u32 reserved1[(0x1000 - 0x114) / 4];
+	u32 agingx0;
+};
+
+struct rk3399_msch_timings {
+	u32 ddrtiminga0;
+	u32 ddrtimingb0;
+	u32 ddrtimingc0;
+	u32 devtodev0;
+	u32 ddrmode;
+	u32 agingx0;
+};
+
+struct rk3399_ddr_cic_regs {
+	u32 cic_ctrl0;
+	u32 cic_ctrl1;
+	u32 cic_idle_th;
+	u32 cic_cg_wait_th;
+	u32 cic_status0;
+	u32 cic_status1;
+	u32 cic_ctrl2;
+	u32 cic_ctrl3;
+	u32 cic_ctrl4;
+};
+
+/* DENALI_CTL_00 */
+#define START		1
+
+/* DENALI_CTL_68 */
+#define PWRUP_SREFRESH_EXIT	(1 << 16)
+
+/* DENALI_CTL_274 */
+#define MEM_RST_VALID	1
+
+struct rk3399_sdram_channel {
+	unsigned int rank;
+	/* dram column number, 0 means this channel is invalid */
+	unsigned int col;
+	/* dram bank number, 3:8bank, 2:4bank */
+	unsigned int bk;
+	/* channel buswidth, 2:32bit, 1:16bit, 0:8bit */
+	unsigned int bw;
+	/* die buswidth, 2:32bit, 1:16bit, 0:8bit */
+	unsigned int dbw;
+	/*
+	 * row_3_4 = 1: 6Gb or 12Gb die
+	 * row_3_4 = 0: normal die, power of 2
+	 */
+	unsigned int row_3_4;
+	unsigned int cs0_row;
+	unsigned int cs1_row;
+	unsigned int ddrconfig;
+	struct rk3399_msch_timings noc_timings;
+};
+
+struct rk3399_base_params {
+	unsigned int ddr_freq;
+	unsigned int dramtype;
+	unsigned int num_channels;
+	unsigned int stride;
+	unsigned int odt;
+};
+
+struct rk3399_sdram_params {
+	struct rk3399_sdram_channel ch[2];
+	struct rk3399_base_params base;
+	struct rk3399_ddr_pctl_regs pctl_regs;
+	struct rk3399_ddr_pi_regs pi_regs;
+	struct rk3399_ddr_publ_regs phy_regs;
+};
+
+#define PI_CA_TRAINING		(1 << 0)
+#define PI_WRITE_LEVELING	(1 << 1)
+#define PI_READ_GATE_TRAINING	(1 << 2)
+#define PI_READ_LEVELING	(1 << 3)
+#define PI_WDQ_LEVELING		(1 << 4)
+#define PI_FULL_TRAINING	0xff
+
+#endif
diff --git a/arch/arm/mach-rockchip/rk3399/Makefile b/arch/arm/mach-rockchip/rk3399/Makefile
index 98ebeac340..793ce31c12 100644
--- a/arch/arm/mach-rockchip/rk3399/Makefile
+++ b/arch/arm/mach-rockchip/rk3399/Makefile
@@ -6,4 +6,5 @@
 
 obj-y += clk_rk3399.o
 obj-y += rk3399.o
+obj-y += sdram_rk3399.o
 obj-y += syscon_rk3399.o
diff --git a/arch/arm/mach-rockchip/rk3399/rk3399.c b/arch/arm/mach-rockchip/rk3399/rk3399.c
index 8bb950ebd1..cbfd3fa09a 100644
--- a/arch/arm/mach-rockchip/rk3399/rk3399.c
+++ b/arch/arm/mach-rockchip/rk3399/rk3399.c
@@ -40,5 +40,6 @@ int arch_cpu_init(void)
 	/* Emmc clock generator: disable the clock multipilier */
 	rk_clrreg(GRF_EMMCCORE_CON11, 0x0ff);
 
+	printf("time %x, %x\n", readl(0xff8680a8), readl(0xff8680ac));
 	return 0;
 }
diff --git a/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c b/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c
new file mode 100644
index 0000000000..749b52c8e7
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c
@@ -0,0 +1,1321 @@
+/*
+ * (C) Copyright 2016-2017 Rockchip Inc.
+ *
+ * SPDX-License-Identifier:     GPL-2.0
+ *
+ * Adapted from coreboot.
+ */
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <dt-structs.h>
+#include <ram.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sdram_rk3399.h>
+#include <asm/arch/cru_rk3399.h>
+#include <asm/arch/grf_rk3399.h>
+#include <asm/arch/hardware.h>
+#include <linux/err.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+struct chan_info {
+	struct rk3399_ddr_pctl_regs *pctl;
+	struct rk3399_ddr_pi_regs *pi;
+	struct rk3399_ddr_publ_regs *publ;
+	struct rk3399_msch_regs *msch;
+};
+
+struct dram_info {
+#ifdef CONFIG_SPL_BUILD
+	struct chan_info chan[2];
+	struct clk ddr_clk;
+	struct rk3399_cru *cru;
+	struct rk3399_pmucru *pmucru;
+	struct rk3399_pmusgrf_regs *pmusgrf;
+	struct rk3399_ddr_cic_regs *cic;
+#endif
+	struct ram_info info;
+	struct rk3399_pmugrf_regs *pmugrf;
+};
+
+/*
+ * sys_reg bitfield struct
+ * [31]		row_3_4_ch1
+ * [30]		row_3_4_ch0
+ * [29:28]	chinfo
+ * [27]		rank_ch1
+ * [26:25]	col_ch1
+ * [24]		bk_ch1
+ * [23:22]	cs0_row_ch1
+ * [21:20]	cs1_row_ch1
+ * [19:18]	bw_ch1
+ * [17:16]	dbw_ch1;
+ * [15:13]	ddrtype
+ * [12]		channelnum
+ * [11]		rank_ch0
+ * [10:9]	col_ch0
+ * [8]		bk_ch0
+ * [7:6]	cs0_row_ch0
+ * [5:4]	cs1_row_ch0
+ * [3:2]	bw_ch0
+ * [1:0]	dbw_ch0
+*/
+#define SYS_REG_DDRTYPE_SHIFT		13
+#define SYS_REG_DDRTYPE_MASK		7
+#define SYS_REG_NUM_CH_SHIFT		12
+#define SYS_REG_NUM_CH_MASK		1
+#define SYS_REG_ROW_3_4_SHIFT(ch)	(30 + (ch))
+#define SYS_REG_ROW_3_4_MASK		1
+#define SYS_REG_CHINFO_SHIFT(ch)	(28 + (ch))
+#define SYS_REG_RANK_SHIFT(ch)		(11 + (ch) * 16)
+#define SYS_REG_RANK_MASK		1
+#define SYS_REG_COL_SHIFT(ch)		(9 + (ch) * 16)
+#define SYS_REG_COL_MASK		3
+#define SYS_REG_BK_SHIFT(ch)		(8 + (ch) * 16)
+#define SYS_REG_BK_MASK			1
+#define SYS_REG_CS0_ROW_SHIFT(ch)	(6 + (ch) * 16)
+#define SYS_REG_CS0_ROW_MASK		3
+#define SYS_REG_CS1_ROW_SHIFT(ch)	(4 + (ch) * 16)
+#define SYS_REG_CS1_ROW_MASK		3
+#define SYS_REG_BW_SHIFT(ch)		(2 + (ch) * 16)
+#define SYS_REG_BW_MASK			3
+#define SYS_REG_DBW_SHIFT(ch)		((ch) * 16)
+#define SYS_REG_DBW_MASK		3
+
+#define PRESET_SGRF_HOLD(n)	((0x1 << (6 + 16)) | ((n) << 6))
+#define PRESET_GPIO0_HOLD(n)	((0x1 << (7 + 16)) | ((n) << 7))
+#define PRESET_GPIO1_HOLD(n)	((0x1 << (8 + 16)) | ((n) << 8))
+
+#define PHY_DRV_ODT_Hi_Z	0x0
+#define PHY_DRV_ODT_240		0x1
+#define PHY_DRV_ODT_120		0x8
+#define PHY_DRV_ODT_80		0x9
+#define PHY_DRV_ODT_60		0xc
+#define PHY_DRV_ODT_48		0xd
+#define PHY_DRV_ODT_40		0xe
+#define PHY_DRV_ODT_34_3	0xf
+
+#ifdef CONFIG_SPL_BUILD
+
+struct rockchip_dmc_plat {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct dtd_rockchip_rk3399_dmc dtplat;
+#else
+	struct rk3399_sdram_params sdram_params;
+#endif
+	struct regmap *map;
+};
+
+static void copy_to_reg(u32 *dest, const u32 *src, u32 n)
+{
+	int i;
+
+	for (i = 0; i < n / sizeof(u32); i++) {
+		writel(*src, dest);
+		src++;
+		dest++;
+	}
+}
+
+static void phy_dll_bypass_set(struct rk3399_ddr_publ_regs *ddr_publ_regs,
+			       u32 freq)
+{
+	u32 *denali_phy = ddr_publ_regs->denali_phy;
+
+	/* From IP spec, only freq small than 125 can enter dll bypass mode */
+	if (freq <= 125) {
+		/* phy_sw_master_mode_X PHY_86/214/342/470 4bits offset_8 */
+		setbits_le32(&denali_phy[86], (0x3 << 2) << 8);
+		setbits_le32(&denali_phy[214], (0x3 << 2) << 8);
+		setbits_le32(&denali_phy[342], (0x3 << 2) << 8);
+		setbits_le32(&denali_phy[470], (0x3 << 2) << 8);
+
+		/* phy_adrctl_sw_master_mode PHY_547/675/803 4bits offset_16 */
+		setbits_le32(&denali_phy[547], (0x3 << 2) << 16);
+		setbits_le32(&denali_phy[675], (0x3 << 2) << 16);
+		setbits_le32(&denali_phy[803], (0x3 << 2) << 16);
+	} else {
+		/* phy_sw_master_mode_X PHY_86/214/342/470 4bits offset_8 */
+		clrbits_le32(&denali_phy[86], (0x3 << 2) << 8);
+		clrbits_le32(&denali_phy[214], (0x3 << 2) << 8);
+		clrbits_le32(&denali_phy[342], (0x3 << 2) << 8);
+		clrbits_le32(&denali_phy[470], (0x3 << 2) << 8);
+
+		/* phy_adrctl_sw_master_mode PHY_547/675/803 4bits offset_16 */
+		clrbits_le32(&denali_phy[547], (0x3 << 2) << 16);
+		clrbits_le32(&denali_phy[675], (0x3 << 2) << 16);
+		clrbits_le32(&denali_phy[803], (0x3 << 2) << 16);
+	}
+}
+
+static void set_memory_map(const struct chan_info *chan, u32 channel,
+			   const struct rk3399_sdram_params *sdram_params)
+{
+	const struct rk3399_sdram_channel *sdram_ch =
+		&sdram_params->ch[channel];
+	u32 *denali_ctl = chan->pctl->denali_ctl;
+	u32 *denali_pi = chan->pi->denali_pi;
+	u32 cs_map;
+	u32 reduc;
+	u32 row;
+
+	/* Get row number from ddrconfig setting */
+	if (sdram_ch->ddrconfig < 2 || sdram_ch->ddrconfig == 4)
+		row = 16;
+	else if (sdram_ch->ddrconfig == 3)
+		row = 14;
+	else
+		row = 15;
+
+	cs_map = (sdram_ch->rank > 1) ? 3 : 1;
+	reduc = (sdram_ch->bw == 2) ? 0 : 1;
+
+	/* Set the dram configuration to ctrl */
+	clrsetbits_le32(&denali_ctl[191], 0xF, (12 - sdram_ch->col));
+	clrsetbits_le32(&denali_ctl[190], (0x3 << 16) | (0x7 << 24),
+			((3 - sdram_ch->bk) << 16) |
+			((16 - row) << 24));
+
+	clrsetbits_le32(&denali_ctl[196], 0x3 | (1 << 16),
+			cs_map | (reduc << 16));
+
+	/* PI_199 PI_COL_DIFF:RW:0:4 */
+	clrsetbits_le32(&denali_pi[199], 0xF, (12 - sdram_ch->col));
+
+	/* PI_155 PI_ROW_DIFF:RW:24:3 PI_BANK_DIFF:RW:16:2 */
+	clrsetbits_le32(&denali_pi[155], (0x3 << 16) | (0x7 << 24),
+			((3 - sdram_ch->bk) << 16) |
+			((16 - row) << 24));
+	/* PI_41 PI_CS_MAP:RW:24:4 */
+	clrsetbits_le32(&denali_pi[41], 0xf << 24, cs_map << 24);
+	if ((sdram_ch->rank == 1) && (sdram_params->base.dramtype == DDR3))
+		writel(0x2EC7FFFF, &denali_pi[34]);
+}
+
+static void set_ds_odt(const struct chan_info *chan,
+		       const struct rk3399_sdram_params *sdram_params)
+{
+	u32 *denali_phy = chan->publ->denali_phy;
+
+	u32 tsel_idle_en, tsel_wr_en, tsel_rd_en;
+	u32 tsel_idle_select_p, tsel_wr_select_p, tsel_rd_select_p;
+	u32 ca_tsel_wr_select_p, ca_tsel_wr_select_n;
+	u32 tsel_idle_select_n, tsel_wr_select_n, tsel_rd_select_n;
+	u32 reg_value;
+
+	if (sdram_params->base.dramtype == LPDDR4) {
+		tsel_rd_select_p = PHY_DRV_ODT_Hi_Z;
+		tsel_wr_select_p = PHY_DRV_ODT_40;
+		ca_tsel_wr_select_p = PHY_DRV_ODT_40;
+		tsel_idle_select_p = PHY_DRV_ODT_Hi_Z;
+
+		tsel_rd_select_n = PHY_DRV_ODT_240;
+		tsel_wr_select_n = PHY_DRV_ODT_40;
+		ca_tsel_wr_select_n = PHY_DRV_ODT_40;
+		tsel_idle_select_n = PHY_DRV_ODT_240;
+	} else if (sdram_params->base.dramtype == LPDDR3) {
+		tsel_rd_select_p = PHY_DRV_ODT_240;
+		tsel_wr_select_p = PHY_DRV_ODT_34_3;
+		ca_tsel_wr_select_p = PHY_DRV_ODT_48;
+		tsel_idle_select_p = PHY_DRV_ODT_240;
+
+		tsel_rd_select_n = PHY_DRV_ODT_Hi_Z;
+		tsel_wr_select_n = PHY_DRV_ODT_34_3;
+		ca_tsel_wr_select_n = PHY_DRV_ODT_48;
+		tsel_idle_select_n = PHY_DRV_ODT_Hi_Z;
+	} else {
+		tsel_rd_select_p = PHY_DRV_ODT_240;
+		tsel_wr_select_p = PHY_DRV_ODT_34_3;
+		ca_tsel_wr_select_p = PHY_DRV_ODT_34_3;
+		tsel_idle_select_p = PHY_DRV_ODT_240;
+
+		tsel_rd_select_n = PHY_DRV_ODT_240;
+		tsel_wr_select_n = PHY_DRV_ODT_34_3;
+		ca_tsel_wr_select_n = PHY_DRV_ODT_34_3;
+		tsel_idle_select_n = PHY_DRV_ODT_240;
+	}
+
+	if (sdram_params->base.odt == 1)
+		tsel_rd_en = 1;
+	else
+		tsel_rd_en = 0;
+
+	tsel_wr_en = 0;
+	tsel_idle_en = 0;
+
+	/*
+	 * phy_dq_tsel_select_X 24bits DENALI_PHY_6/134/262/390 offset_0
+	 * sets termination values for read/idle cycles and drive strength
+	 * for write cycles for DQ/DM
+	 */
+	reg_value = tsel_rd_select_n | (tsel_rd_select_p << 0x4) |
+		    (tsel_wr_select_n << 8) | (tsel_wr_select_p << 12) |
+		    (tsel_idle_select_n << 16) | (tsel_idle_select_p << 20);
+	clrsetbits_le32(&denali_phy[6], 0xffffff, reg_value);
+	clrsetbits_le32(&denali_phy[134], 0xffffff, reg_value);
+	clrsetbits_le32(&denali_phy[262], 0xffffff, reg_value);
+	clrsetbits_le32(&denali_phy[390], 0xffffff, reg_value);
+
+	/*
+	 * phy_dqs_tsel_select_X 24bits DENALI_PHY_7/135/263/391 offset_0
+	 * sets termination values for read/idle cycles and drive strength
+	 * for write cycles for DQS
+	 */
+	clrsetbits_le32(&denali_phy[7], 0xffffff, reg_value);
+	clrsetbits_le32(&denali_phy[135], 0xffffff, reg_value);
+	clrsetbits_le32(&denali_phy[263], 0xffffff, reg_value);
+	clrsetbits_le32(&denali_phy[391], 0xffffff, reg_value);
+
+	/* phy_adr_tsel_select_ 8bits DENALI_PHY_544/672/800 offset_0 */
+	reg_value = ca_tsel_wr_select_n | (ca_tsel_wr_select_p << 0x4);
+	clrsetbits_le32(&denali_phy[544], 0xff, reg_value);
+	clrsetbits_le32(&denali_phy[672], 0xff, reg_value);
+	clrsetbits_le32(&denali_phy[800], 0xff, reg_value);
+
+	/* phy_pad_addr_drive 8bits DENALI_PHY_928 offset_0 */
+	clrsetbits_le32(&denali_phy[928], 0xff, reg_value);
+
+	/* phy_pad_rst_drive 8bits DENALI_PHY_937 offset_0 */
+	clrsetbits_le32(&denali_phy[937], 0xff, reg_value);
+
+	/* phy_pad_cke_drive 8bits DENALI_PHY_935 offset_0 */
+	clrsetbits_le32(&denali_phy[935], 0xff, reg_value);
+
+	/* phy_pad_cs_drive 8bits DENALI_PHY_939 offset_0 */
+	clrsetbits_le32(&denali_phy[939], 0xff, reg_value);
+
+	/* phy_pad_clk_drive 8bits DENALI_PHY_929 offset_0 */
+	clrsetbits_le32(&denali_phy[929], 0xff, reg_value);
+
+	/* phy_pad_fdbk_drive 23bit DENALI_PHY_924/925 */
+	clrsetbits_le32(&denali_phy[924], 0xff,
+			tsel_wr_select_n | (tsel_wr_select_p << 4));
+	clrsetbits_le32(&denali_phy[925], 0xff,
+			tsel_rd_select_n | (tsel_rd_select_p << 4));
+
+	/* phy_dq_tsel_enable_X 3bits DENALI_PHY_5/133/261/389 offset_16 */
+	reg_value = (tsel_rd_en | (tsel_wr_en << 1) | (tsel_idle_en << 2))
+		<< 16;
+	clrsetbits_le32(&denali_phy[5], 0x7 << 16, reg_value);
+	clrsetbits_le32(&denali_phy[133], 0x7 << 16, reg_value);
+	clrsetbits_le32(&denali_phy[261], 0x7 << 16, reg_value);
+	clrsetbits_le32(&denali_phy[389], 0x7 << 16, reg_value);
+
+	/* phy_dqs_tsel_enable_X 3bits DENALI_PHY_6/134/262/390 offset_24 */
+	reg_value = (tsel_rd_en | (tsel_wr_en << 1) | (tsel_idle_en << 2))
+		<< 24;
+	clrsetbits_le32(&denali_phy[6], 0x7 << 24, reg_value);
+	clrsetbits_le32(&denali_phy[134], 0x7 << 24, reg_value);
+	clrsetbits_le32(&denali_phy[262], 0x7 << 24, reg_value);
+	clrsetbits_le32(&denali_phy[390], 0x7 << 24, reg_value);
+
+	/* phy_adr_tsel_enable_ 1bit DENALI_PHY_518/646/774 offset_8 */
+	reg_value = tsel_wr_en << 8;
+	clrsetbits_le32(&denali_phy[518], 0x1 << 8, reg_value);
+	clrsetbits_le32(&denali_phy[646], 0x1 << 8, reg_value);
+	clrsetbits_le32(&denali_phy[774], 0x1 << 8, reg_value);
+
+	/* phy_pad_addr_term tsel 1bit DENALI_PHY_933 offset_17 */
+	reg_value = tsel_wr_en << 17;
+	clrsetbits_le32(&denali_phy[933], 0x1 << 17, reg_value);
+	/*
+	 * pad_rst/cke/cs/clk_term tsel 1bits
+	 * DENALI_PHY_938/936/940/934 offset_17
+	 */
+	clrsetbits_le32(&denali_phy[938], 0x1 << 17, reg_value);
+	clrsetbits_le32(&denali_phy[936], 0x1 << 17, reg_value);
+	clrsetbits_le32(&denali_phy[940], 0x1 << 17, reg_value);
+	clrsetbits_le32(&denali_phy[934], 0x1 << 17, reg_value);
+
+	/* phy_pad_fdbk_term 1bit DENALI_PHY_930 offset_17 */
+	clrsetbits_le32(&denali_phy[930], 0x1 << 17, reg_value);
+}
+
+static int phy_io_config(const struct chan_info *chan,
+			  const struct rk3399_sdram_params *sdram_params)
+{
+	u32 *denali_phy = chan->publ->denali_phy;
+	u32 vref_mode_dq, vref_value_dq, vref_mode_ac, vref_value_ac;
+	u32 mode_sel;
+	u32 reg_value;
+	u32 drv_value, odt_value;
+	u32 speed;
+
+	/* vref setting */
+	if (sdram_params->base.dramtype == LPDDR4) {
+		/* LPDDR4 */
+		vref_mode_dq = 0x6;
+		vref_value_dq = 0x1f;
+		vref_mode_ac = 0x6;
+		vref_value_ac = 0x1f;
+	} else if (sdram_params->base.dramtype == LPDDR3) {
+		if (sdram_params->base.odt == 1) {
+			vref_mode_dq = 0x5;  /* LPDDR3 ODT */
+			drv_value = (readl(&denali_phy[6]) >> 12) & 0xf;
+			odt_value = (readl(&denali_phy[6]) >> 4) & 0xf;
+			if (drv_value == PHY_DRV_ODT_48) {
+				switch (odt_value) {
+				case PHY_DRV_ODT_240:
+					vref_value_dq = 0x16;
+					break;
+				case PHY_DRV_ODT_120:
+					vref_value_dq = 0x26;
+					break;
+				case PHY_DRV_ODT_60:
+					vref_value_dq = 0x36;
+					break;
+				default:
+					debug("Invalid ODT value.\n");
+					return -EINVAL;
+				}
+			} else if (drv_value == PHY_DRV_ODT_40) {
+				switch (odt_value) {
+				case PHY_DRV_ODT_240:
+					vref_value_dq = 0x19;
+					break;
+				case PHY_DRV_ODT_120:
+					vref_value_dq = 0x23;
+					break;
+				case PHY_DRV_ODT_60:
+					vref_value_dq = 0x31;
+					break;
+				default:
+					debug("Invalid ODT value.\n");
+					return -EINVAL;
+				}
+			} else if (drv_value == PHY_DRV_ODT_34_3) {
+				switch (odt_value) {
+				case PHY_DRV_ODT_240:
+					vref_value_dq = 0x17;
+					break;
+				case PHY_DRV_ODT_120:
+					vref_value_dq = 0x20;
+					break;
+				case PHY_DRV_ODT_60:
+					vref_value_dq = 0x2e;
+					break;
+				default:
+					debug("Invalid ODT value.\n");
+					return -EINVAL;
+				}
+			} else {
+				debug("Invalid DRV value.\n");
+				return -EINVAL;
+			}
+		} else {
+			vref_mode_dq = 0x2;  /* LPDDR3 */
+			vref_value_dq = 0x1f;
+		}
+		vref_mode_ac = 0x2;
+		vref_value_ac = 0x1f;
+	} else if (sdram_params->base.dramtype == DDR3) {
+		/* DDR3L */
+		vref_mode_dq = 0x1;
+		vref_value_dq = 0x1f;
+		vref_mode_ac = 0x1;
+		vref_value_ac = 0x1f;
+	} else {
+		debug("Unknown DRAM type.\n");
+		return -EINVAL;
+	}
+
+	reg_value = (vref_mode_dq << 9) | (0x1 << 8) | vref_value_dq;
+
+	/* PHY_913 PHY_PAD_VREF_CTRL_DQ_0 12bits offset_8 */
+	clrsetbits_le32(&denali_phy[913], 0xfff << 8, reg_value << 8);
+	/* PHY_914 PHY_PAD_VREF_CTRL_DQ_1 12bits offset_0 */
+	clrsetbits_le32(&denali_phy[914], 0xfff, reg_value);
+	/* PHY_914 PHY_PAD_VREF_CTRL_DQ_2 12bits offset_16 */
+	clrsetbits_le32(&denali_phy[914], 0xfff << 16, reg_value << 16);
+	/* PHY_915 PHY_PAD_VREF_CTRL_DQ_3 12bits offset_0 */
+	clrsetbits_le32(&denali_phy[915], 0xfff, reg_value);
+
+	reg_value = (vref_mode_ac << 9) | (0x1 << 8) | vref_value_ac;
+
+	/* PHY_915 PHY_PAD_VREF_CTRL_AC 12bits offset_16 */
+	clrsetbits_le32(&denali_phy[915], 0xfff << 16, reg_value << 16);
+
+	if (sdram_params->base.dramtype == LPDDR4)
+		mode_sel = 0x6;
+	else if (sdram_params->base.dramtype == LPDDR3)
+		mode_sel = 0x0;
+	else if (sdram_params->base.dramtype == DDR3)
+		mode_sel = 0x1;
+	else
+		return -EINVAL;
+
+	/* PHY_924 PHY_PAD_FDBK_DRIVE */
+	clrsetbits_le32(&denali_phy[924], 0x7 << 15, mode_sel << 15);
+	/* PHY_926 PHY_PAD_DATA_DRIVE */
+	clrsetbits_le32(&denali_phy[926], 0x7 << 6, mode_sel << 6);
+	/* PHY_927 PHY_PAD_DQS_DRIVE */
+	clrsetbits_le32(&denali_phy[927], 0x7 << 6, mode_sel << 6);
+	/* PHY_928 PHY_PAD_ADDR_DRIVE */
+	clrsetbits_le32(&denali_phy[928], 0x7 << 14, mode_sel << 14);
+	/* PHY_929 PHY_PAD_CLK_DRIVE */
+	clrsetbits_le32(&denali_phy[929], 0x7 << 14, mode_sel << 14);
+	/* PHY_935 PHY_PAD_CKE_DRIVE */
+	clrsetbits_le32(&denali_phy[935], 0x7 << 14, mode_sel << 14);
+	/* PHY_937 PHY_PAD_RST_DRIVE */
+	clrsetbits_le32(&denali_phy[937], 0x7 << 14, mode_sel << 14);
+	/* PHY_939 PHY_PAD_CS_DRIVE */
+	clrsetbits_le32(&denali_phy[939], 0x7 << 14, mode_sel << 14);
+
+
+	/* speed setting */
+	if (sdram_params->base.ddr_freq < 400)
+		speed = 0x0;
+	else if (sdram_params->base.ddr_freq < 800)
+		speed = 0x1;
+	else if (sdram_params->base.ddr_freq < 1200)
+		speed = 0x2;
+	else
+		speed = 0x3;
+
+	/* PHY_924 PHY_PAD_FDBK_DRIVE */
+	clrsetbits_le32(&denali_phy[924], 0x3 << 21, speed << 21);
+	/* PHY_926 PHY_PAD_DATA_DRIVE */
+	clrsetbits_le32(&denali_phy[926], 0x3 << 9, speed << 9);
+	/* PHY_927 PHY_PAD_DQS_DRIVE */
+	clrsetbits_le32(&denali_phy[927], 0x3 << 9, speed << 9);
+	/* PHY_928 PHY_PAD_ADDR_DRIVE */
+	clrsetbits_le32(&denali_phy[928], 0x3 << 17, speed << 17);
+	/* PHY_929 PHY_PAD_CLK_DRIVE */
+	clrsetbits_le32(&denali_phy[929], 0x3 << 17, speed << 17);
+	/* PHY_935 PHY_PAD_CKE_DRIVE */
+	clrsetbits_le32(&denali_phy[935], 0x3 << 17, speed << 17);
+	/* PHY_937 PHY_PAD_RST_DRIVE */
+	clrsetbits_le32(&denali_phy[937], 0x3 << 17, speed << 17);
+	/* PHY_939 PHY_PAD_CS_DRIVE */
+	clrsetbits_le32(&denali_phy[939], 0x3 << 17, speed << 17);
+
+	return 0;
+}
+
+static int pctl_cfg(const struct chan_info *chan, u32 channel,
+		    const struct rk3399_sdram_params *sdram_params)
+{
+	u32 *denali_ctl = chan->pctl->denali_ctl;
+	u32 *denali_pi = chan->pi->denali_pi;
+	u32 *denali_phy = chan->publ->denali_phy;
+	const u32 *params_ctl = sdram_params->pctl_regs.denali_ctl;
+	const u32 *params_phy = sdram_params->phy_regs.denali_phy;
+	u32 tmp, tmp1, tmp2;
+	u32 pwrup_srefresh_exit;
+	int ret;
+
+	/*
+	 * work around controller bug:
+	 * Do not program DRAM_CLASS until NO_PHY_IND_TRAIN_INT is programmed
+	 */
+	copy_to_reg(&denali_ctl[1], &params_ctl[1],
+		    sizeof(struct rk3399_ddr_pctl_regs) - 4);
+	writel(params_ctl[0], &denali_ctl[0]);
+	copy_to_reg(denali_pi, &sdram_params->pi_regs.denali_pi[0],
+		    sizeof(struct rk3399_ddr_pi_regs));
+	/* rank count need to set for init */
+	set_memory_map(chan, channel, sdram_params);
+
+	writel(sdram_params->phy_regs.denali_phy[910], &denali_phy[910]);
+	writel(sdram_params->phy_regs.denali_phy[911], &denali_phy[911]);
+	writel(sdram_params->phy_regs.denali_phy[912], &denali_phy[912]);
+
+	pwrup_srefresh_exit = readl(&denali_ctl[68]) & PWRUP_SREFRESH_EXIT;
+	clrbits_le32(&denali_ctl[68], PWRUP_SREFRESH_EXIT);
+
+	/* PHY_DLL_RST_EN */
+	clrsetbits_le32(&denali_phy[957], 0x3 << 24, 1 << 24);
+
+	setbits_le32(&denali_pi[0], START);
+	setbits_le32(&denali_ctl[0], START);
+
+	/* Wating for phy DLL lock */
+	while (1) {
+		tmp = readl(&denali_phy[920]);
+		tmp1 = readl(&denali_phy[921]);
+		tmp2 = readl(&denali_phy[922]);
+		if ((((tmp >> 16) & 0x1) == 0x1) &&
+		    (((tmp1 >> 16) & 0x1) == 0x1) &&
+		    (((tmp1 >> 0) & 0x1) == 0x1) &&
+		    (((tmp2 >> 0) & 0x1) == 0x1))
+			break;
+	}
+
+	copy_to_reg(&denali_phy[896], &params_phy[896], (958 - 895) * 4);
+	copy_to_reg(&denali_phy[0], &params_phy[0], (90 - 0 + 1) * 4);
+	copy_to_reg(&denali_phy[128], &params_phy[128], (218 - 128 + 1) * 4);
+	copy_to_reg(&denali_phy[256], &params_phy[256], (346 - 256 + 1) * 4);
+	copy_to_reg(&denali_phy[384], &params_phy[384], (474 - 384 + 1) * 4);
+	copy_to_reg(&denali_phy[512], &params_phy[512], (549 - 512 + 1) * 4);
+	copy_to_reg(&denali_phy[640], &params_phy[640], (677 - 640 + 1) * 4);
+	copy_to_reg(&denali_phy[768], &params_phy[768], (805 - 768 + 1) * 4);
+	set_ds_odt(chan, sdram_params);
+
+	/*
+	 * phy_dqs_tsel_wr_timing_X 8bits DENALI_PHY_84/212/340/468 offset_8
+	 * dqs_tsel_wr_end[7:4] add Half cycle
+	 */
+	tmp = (readl(&denali_phy[84]) >> 8) & 0xff;
+	clrsetbits_le32(&denali_phy[84], 0xff << 8, (tmp + 0x10) << 8);
+	tmp = (readl(&denali_phy[212]) >> 8) & 0xff;
+	clrsetbits_le32(&denali_phy[212], 0xff << 8, (tmp + 0x10) << 8);
+	tmp = (readl(&denali_phy[340]) >> 8) & 0xff;
+	clrsetbits_le32(&denali_phy[340], 0xff << 8, (tmp + 0x10) << 8);
+	tmp = (readl(&denali_phy[468]) >> 8) & 0xff;
+	clrsetbits_le32(&denali_phy[468], 0xff << 8, (tmp + 0x10) << 8);
+
+	/*
+	 * phy_dqs_tsel_wr_timing_X 8bits DENALI_PHY_83/211/339/467 offset_8
+	 * dq_tsel_wr_end[7:4] add Half cycle
+	 */
+	tmp = (readl(&denali_phy[83]) >> 16) & 0xff;
+	clrsetbits_le32(&denali_phy[83], 0xff << 16, (tmp + 0x10) << 16);
+	tmp = (readl(&denali_phy[211]) >> 16) & 0xff;
+	clrsetbits_le32(&denali_phy[211], 0xff << 16, (tmp + 0x10) << 16);
+	tmp = (readl(&denali_phy[339]) >> 16) & 0xff;
+	clrsetbits_le32(&denali_phy[339], 0xff << 16, (tmp + 0x10) << 16);
+	tmp = (readl(&denali_phy[467]) >> 16) & 0xff;
+	clrsetbits_le32(&denali_phy[467], 0xff << 16, (tmp + 0x10) << 16);
+
+	ret = phy_io_config(chan, sdram_params);
+	if (ret)
+		return ret;
+
+	/* PHY_DLL_RST_EN */
+	clrsetbits_le32(&denali_phy[957], 0x3 << 24, 0x2 << 24);
+
+	/* Wating for PHY and DRAM init complete */
+	tmp = 0;
+	while (!(readl(&denali_ctl[203]) & (1 << 3))) {
+		mdelay(10);
+		tmp++;
+		if (tmp > 10)
+			return -ETIME;
+	}
+
+	clrsetbits_le32(&denali_ctl[68], PWRUP_SREFRESH_EXIT,
+			pwrup_srefresh_exit);
+	return 0;
+}
+
+static void select_per_cs_training_index(const struct chan_info *chan,
+					 u32 rank)
+{
+	u32 *denali_phy = chan->publ->denali_phy;
+
+	/* PHY_84 PHY_PER_CS_TRAINING_EN_0 1bit offset_16 */
+	if ((readl(&denali_phy[84])>>16) & 1) {
+		/*
+		 * PHY_8/136/264/392
+		 * phy_per_cs_training_index_X 1bit offset_24
+		 */
+		clrsetbits_le32(&denali_phy[8], 0x1 << 24, rank << 24);
+		clrsetbits_le32(&denali_phy[136], 0x1 << 24, rank << 24);
+		clrsetbits_le32(&denali_phy[264], 0x1 << 24, rank << 24);
+		clrsetbits_le32(&denali_phy[392], 0x1 << 24, rank << 24);
+	}
+}
+
+static void override_write_leveling_value(const struct chan_info *chan)
+{
+	u32 *denali_ctl = chan->pctl->denali_ctl;
+	u32 *denali_phy = chan->publ->denali_phy;
+	u32 byte;
+
+	/* PHY_896 PHY_FREQ_SEL_MULTICAST_EN 1bit offset_0 */
+	setbits_le32(&denali_phy[896], 1);
+
+	/*
+	 * PHY_8/136/264/392
+	 * phy_per_cs_training_multicast_en_X 1bit offset_16
+	 */
+	clrsetbits_le32(&denali_phy[8], 0x1 << 16, 1 << 16);
+	clrsetbits_le32(&denali_phy[136], 0x1 << 16, 1 << 16);
+	clrsetbits_le32(&denali_phy[264], 0x1 << 16, 1 << 16);
+	clrsetbits_le32(&denali_phy[392], 0x1 << 16, 1 << 16);
+
+	for (byte = 0; byte < 4; byte++)
+		clrsetbits_le32(&denali_phy[63 + (128 * byte)], 0xffff << 16,
+				0x200 << 16);
+
+	/* PHY_896 PHY_FREQ_SEL_MULTICAST_EN 1bit offset_0 */
+	clrbits_le32(&denali_phy[896], 1);
+
+	/* CTL_200 ctrlupd_req 1bit offset_8 */
+	clrsetbits_le32(&denali_ctl[200], 0x1 << 8, 0x1 << 8);
+}
+
+static int data_training_ca(const struct chan_info *chan, u32 channel,
+			    const struct rk3399_sdram_params *sdram_params)
+{
+	u32 *denali_pi = chan->pi->denali_pi;
+	u32 *denali_phy = chan->publ->denali_phy;
+	u32 i, tmp;
+	u32 obs_0, obs_1, obs_2, obs_err = 0;
+	u32 rank = sdram_params->ch[channel].rank;
+
+	for (i = 0; i < rank; i++) {
+		select_per_cs_training_index(chan, i);
+		/* PI_100 PI_CALVL_EN:RW:8:2 */
+		clrsetbits_le32(&denali_pi[100], 0x3 << 8, 0x2 << 8);
+		/* PI_92 PI_CALVL_REQ:WR:16:1,PI_CALVL_CS:RW:24:2 */
+		clrsetbits_le32(&denali_pi[92],
+				(0x1 << 16) | (0x3 << 24),
+				(0x1 << 16) | (i << 24));
+
+		/* Waiting for training complete */
+		while (1) {
+			/* PI_174 PI_INT_STATUS:RD:8:18 */
+			tmp = readl(&denali_pi[174]) >> 8;
+			/*
+			 * check status obs
+			 * PHY_532/660/789 phy_adr_calvl_obs1_:0:32
+			 */
+			obs_0 = readl(&denali_phy[532]);
+			obs_1 = readl(&denali_phy[660]);
+			obs_2 = readl(&denali_phy[788]);
+			if (((obs_0 >> 30) & 0x3) ||
+			    ((obs_1 >> 30) & 0x3) ||
+			    ((obs_2 >> 30) & 0x3))
+				obs_err = 1;
+			if ((((tmp >> 11) & 0x1) == 0x1) &&
+			    (((tmp >> 13) & 0x1) == 0x1) &&
+			    (((tmp >> 5) & 0x1) == 0x0) &&
+			    (obs_err == 0))
+				break;
+			else if ((((tmp >> 5) & 0x1) == 0x1) ||
+				 (obs_err == 1))
+				return -EIO;
+		}
+		/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+		writel(0x00003f7c, (&denali_pi[175]));
+	}
+	clrbits_le32(&denali_pi[100], 0x3 << 8);
+
+	return 0;
+}
+
+static int data_training_wl(const struct chan_info *chan, u32 channel,
+			    const struct rk3399_sdram_params *sdram_params)
+{
+	u32 *denali_pi = chan->pi->denali_pi;
+	u32 *denali_phy = chan->publ->denali_phy;
+	u32 i, tmp;
+	u32 obs_0, obs_1, obs_2, obs_3, obs_err = 0;
+	u32 rank = sdram_params->ch[channel].rank;
+
+	for (i = 0; i < rank; i++) {
+		select_per_cs_training_index(chan, i);
+		/* PI_60 PI_WRLVL_EN:RW:8:2 */
+		clrsetbits_le32(&denali_pi[60], 0x3 << 8, 0x2 << 8);
+		/* PI_59 PI_WRLVL_REQ:WR:8:1,PI_WRLVL_CS:RW:16:2 */
+		clrsetbits_le32(&denali_pi[59],
+				(0x1 << 8) | (0x3 << 16),
+				(0x1 << 8) | (i << 16));
+
+		/* Waiting for training complete */
+		while (1) {
+			/* PI_174 PI_INT_STATUS:RD:8:18 */
+			tmp = readl(&denali_pi[174]) >> 8;
+
+			/*
+			 * check status obs, if error maybe can not
+			 * get leveling done PHY_40/168/296/424
+			 * phy_wrlvl_status_obs_X:0:13
+			 */
+			obs_0 = readl(&denali_phy[40]);
+			obs_1 = readl(&denali_phy[168]);
+			obs_2 = readl(&denali_phy[296]);
+			obs_3 = readl(&denali_phy[424]);
+			if (((obs_0 >> 12) & 0x1) ||
+			    ((obs_1 >> 12) & 0x1) ||
+			    ((obs_2 >> 12) & 0x1) ||
+			    ((obs_3 >> 12) & 0x1))
+				obs_err = 1;
+			if ((((tmp >> 10) & 0x1) == 0x1) &&
+			    (((tmp >> 13) & 0x1) == 0x1) &&
+			    (((tmp >> 4) & 0x1) == 0x0) &&
+			    (obs_err == 0))
+				break;
+			else if ((((tmp >> 4) & 0x1) == 0x1) ||
+				 (obs_err == 1))
+				return -EIO;
+		}
+		/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+		writel(0x00003f7c, (&denali_pi[175]));
+	}
+
+	override_write_leveling_value(chan);
+	clrbits_le32(&denali_pi[60], 0x3 << 8);
+
+	return 0;
+}
+
+static int data_training_rg(const struct chan_info *chan, u32 channel,
+			    const struct rk3399_sdram_params *sdram_params)
+{
+	u32 *denali_pi = chan->pi->denali_pi;
+	u32 *denali_phy = chan->publ->denali_phy;
+	u32 i, tmp;
+	u32 obs_0, obs_1, obs_2, obs_3, obs_err = 0;
+	u32 rank = sdram_params->ch[channel].rank;
+
+	for (i = 0; i < rank; i++) {
+		select_per_cs_training_index(chan, i);
+		/* PI_80 PI_RDLVL_GATE_EN:RW:24:2 */
+		clrsetbits_le32(&denali_pi[80], 0x3 << 24, 0x2 << 24);
+		/*
+		 * PI_74 PI_RDLVL_GATE_REQ:WR:16:1
+		 * PI_RDLVL_CS:RW:24:2
+		 */
+		clrsetbits_le32(&denali_pi[74],
+				(0x1 << 16) | (0x3 << 24),
+				(0x1 << 16) | (i << 24));
+
+		/* Waiting for training complete */
+		while (1) {
+			/* PI_174 PI_INT_STATUS:RD:8:18 */
+			tmp = readl(&denali_pi[174]) >> 8;
+
+			/*
+			 * check status obs
+			 * PHY_43/171/299/427
+			 *     PHY_GTLVL_STATUS_OBS_x:16:8
+			 */
+			obs_0 = readl(&denali_phy[43]);
+			obs_1 = readl(&denali_phy[171]);
+			obs_2 = readl(&denali_phy[299]);
+			obs_3 = readl(&denali_phy[427]);
+			if (((obs_0 >> (16 + 6)) & 0x3) ||
+			    ((obs_1 >> (16 + 6)) & 0x3) ||
+			    ((obs_2 >> (16 + 6)) & 0x3) ||
+			    ((obs_3 >> (16 + 6)) & 0x3))
+				obs_err = 1;
+			if ((((tmp >> 9) & 0x1) == 0x1) &&
+			    (((tmp >> 13) & 0x1) == 0x1) &&
+			    (((tmp >> 3) & 0x1) == 0x0) &&
+			    (obs_err == 0))
+				break;
+			else if ((((tmp >> 3) & 0x1) == 0x1) ||
+				 (obs_err == 1))
+				return -EIO;
+		}
+		/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+		writel(0x00003f7c, (&denali_pi[175]));
+	}
+	clrbits_le32(&denali_pi[80], 0x3 << 24);
+
+	return 0;
+}
+
+static int data_training_rl(const struct chan_info *chan, u32 channel,
+			    const struct rk3399_sdram_params *sdram_params)
+{
+	u32 *denali_pi = chan->pi->denali_pi;
+	u32 i, tmp;
+	u32 rank = sdram_params->ch[channel].rank;
+
+	for (i = 0; i < rank; i++) {
+		select_per_cs_training_index(chan, i);
+		/* PI_80 PI_RDLVL_EN:RW:16:2 */
+		clrsetbits_le32(&denali_pi[80], 0x3 << 16, 0x2 << 16);
+		/* PI_74 PI_RDLVL_REQ:WR:8:1,PI_RDLVL_CS:RW:24:2 */
+		clrsetbits_le32(&denali_pi[74],
+				(0x1 << 8) | (0x3 << 24),
+				(0x1 << 8) | (i << 24));
+
+		/* Waiting for training complete */
+		while (1) {
+			/* PI_174 PI_INT_STATUS:RD:8:18 */
+			tmp = readl(&denali_pi[174]) >> 8;
+
+			/*
+			 * make sure status obs not report error bit
+			 * PHY_46/174/302/430
+			 *     phy_rdlvl_status_obs_X:16:8
+			 */
+			if ((((tmp >> 8) & 0x1) == 0x1) &&
+			    (((tmp >> 13) & 0x1) == 0x1) &&
+			    (((tmp >> 2) & 0x1) == 0x0))
+				break;
+			else if (((tmp >> 2) & 0x1) == 0x1)
+				return -EIO;
+		}
+		/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+		writel(0x00003f7c, (&denali_pi[175]));
+	}
+	clrbits_le32(&denali_pi[80], 0x3 << 16);
+
+	return 0;
+}
+
+static int data_training_wdql(const struct chan_info *chan, u32 channel,
+			      const struct rk3399_sdram_params *sdram_params)
+{
+	u32 *denali_pi = chan->pi->denali_pi;
+	u32 i, tmp;
+	u32 rank = sdram_params->ch[channel].rank;
+
+	for (i = 0; i < rank; i++) {
+		select_per_cs_training_index(chan, i);
+		/*
+		 * disable PI_WDQLVL_VREF_EN before wdq leveling?
+		 * PI_181 PI_WDQLVL_VREF_EN:RW:8:1
+		 */
+		clrbits_le32(&denali_pi[181], 0x1 << 8);
+		/* PI_124 PI_WDQLVL_EN:RW:16:2 */
+		clrsetbits_le32(&denali_pi[124], 0x3 << 16, 0x2 << 16);
+		/* PI_121 PI_WDQLVL_REQ:WR:8:1,PI_WDQLVL_CS:RW:16:2 */
+		clrsetbits_le32(&denali_pi[121],
+				(0x1 << 8) | (0x3 << 16),
+				(0x1 << 8) | (i << 16));
+
+		/* Waiting for training complete */
+		while (1) {
+			/* PI_174 PI_INT_STATUS:RD:8:18 */
+			tmp = readl(&denali_pi[174]) >> 8;
+			if ((((tmp >> 12) & 0x1) == 0x1) &&
+			    (((tmp >> 13) & 0x1) == 0x1) &&
+			    (((tmp >> 6) & 0x1) == 0x0))
+				break;
+			else if (((tmp >> 6) & 0x1) == 0x1)
+				return -EIO;
+		}
+		/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+		writel(0x00003f7c, (&denali_pi[175]));
+	}
+	clrbits_le32(&denali_pi[124], 0x3 << 16);
+
+	return 0;
+}
+
+static int data_training(const struct chan_info *chan, u32 channel,
+			 const struct rk3399_sdram_params *sdram_params,
+			 u32 training_flag)
+{
+	u32 *denali_phy = chan->publ->denali_phy;
+
+	/* PHY_927 PHY_PAD_DQS_DRIVE  RPULL offset_22 */
+	setbits_le32(&denali_phy[927], (1 << 22));
+
+	if (training_flag == PI_FULL_TRAINING) {
+		if (sdram_params->base.dramtype == LPDDR4) {
+			training_flag = PI_CA_TRAINING | PI_WRITE_LEVELING |
+					PI_READ_GATE_TRAINING |
+					PI_READ_LEVELING | PI_WDQ_LEVELING;
+		} else if (sdram_params->base.dramtype == LPDDR3) {
+			training_flag = PI_CA_TRAINING | PI_WRITE_LEVELING |
+					PI_READ_GATE_TRAINING;
+		} else if (sdram_params->base.dramtype == DDR3) {
+			training_flag = PI_WRITE_LEVELING |
+					PI_READ_GATE_TRAINING |
+					PI_READ_LEVELING;
+		}
+	}
+
+	/* ca training(LPDDR4,LPDDR3 support) */
+	if ((training_flag & PI_CA_TRAINING) == PI_CA_TRAINING)
+		data_training_ca(chan, channel, sdram_params);
+
+	/* write leveling(LPDDR4,LPDDR3,DDR3 support) */
+	if ((training_flag & PI_WRITE_LEVELING) == PI_WRITE_LEVELING)
+		data_training_wl(chan, channel, sdram_params);
+
+	/* read gate training(LPDDR4,LPDDR3,DDR3 support) */
+	if ((training_flag & PI_READ_GATE_TRAINING) == PI_READ_GATE_TRAINING)
+		data_training_rg(chan, channel, sdram_params);
+
+	/* read leveling(LPDDR4,LPDDR3,DDR3 support) */
+	if ((training_flag & PI_READ_LEVELING) == PI_READ_LEVELING)
+		data_training_rl(chan, channel, sdram_params);
+
+	/* wdq leveling(LPDDR4 support) */
+	if ((training_flag & PI_WDQ_LEVELING) == PI_WDQ_LEVELING)
+		data_training_wdql(chan, channel, sdram_params);
+
+	/* PHY_927 PHY_PAD_DQS_DRIVE  RPULL offset_22 */
+	clrbits_le32(&denali_phy[927], (1 << 22));
+
+	return 0;
+}
+
+static void set_ddrconfig(const struct chan_info *chan,
+			  const struct rk3399_sdram_params *sdram_params,
+			  unsigned char channel, u32 ddrconfig)
+{
+	/* only need to set ddrconfig */
+	struct rk3399_msch_regs *ddr_msch_regs = chan->msch;
+	unsigned int cs0_cap = 0;
+	unsigned int cs1_cap = 0;
+
+	cs0_cap = (1 << (sdram_params->ch[channel].cs0_row
+			+ sdram_params->ch[channel].col
+			+ sdram_params->ch[channel].bk
+			+ sdram_params->ch[channel].bw - 20));
+	if (sdram_params->ch[channel].rank > 1)
+		cs1_cap = cs0_cap >> (sdram_params->ch[channel].cs0_row
+				- sdram_params->ch[channel].cs1_row);
+	if (sdram_params->ch[channel].row_3_4) {
+		cs0_cap = cs0_cap * 3 / 4;
+		cs1_cap = cs1_cap * 3 / 4;
+	}
+
+	writel(ddrconfig | (ddrconfig << 8), &ddr_msch_regs->ddrconf);
+	writel(((cs0_cap / 32) & 0xff) | (((cs1_cap / 32) & 0xff) << 8),
+	       &ddr_msch_regs->ddrsize);
+}
+
+static void dram_all_config(struct dram_info *dram,
+			    const struct rk3399_sdram_params *sdram_params)
+{
+	u32 sys_reg = 0;
+	unsigned int channel, idx;
+
+	sys_reg |= sdram_params->base.dramtype << SYS_REG_DDRTYPE_SHIFT;
+	sys_reg |= (sdram_params->base.num_channels - 1)
+		    << SYS_REG_NUM_CH_SHIFT;
+	for (channel = 0, idx = 0;
+	     (idx < sdram_params->base.num_channels) && (channel < 2);
+	     channel++) {
+		const struct rk3399_sdram_channel *info =
+			&sdram_params->ch[channel];
+		struct rk3399_msch_regs *ddr_msch_regs;
+		const struct rk3399_msch_timings *noc_timing;
+
+		if (sdram_params->ch[channel].col == 0)
+			continue;
+		idx++;
+		sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(channel);
+		sys_reg |= 1 << SYS_REG_CHINFO_SHIFT(channel);
+		sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(channel);
+		sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(channel);
+		sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(channel);
+		sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(channel);
+		sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(channel);
+		sys_reg |= (2 >> info->bw) << SYS_REG_BW_SHIFT(channel);
+		sys_reg |= (2 >> info->dbw) << SYS_REG_DBW_SHIFT(channel);
+
+		ddr_msch_regs = dram->chan[channel].msch;
+		noc_timing = &sdram_params->ch[channel].noc_timings;
+		writel(noc_timing->ddrtiminga0,
+		       &ddr_msch_regs->ddrtiminga0);
+		writel(noc_timing->ddrtimingb0,
+		       &ddr_msch_regs->ddrtimingb0);
+		writel(noc_timing->ddrtimingc0,
+		       &ddr_msch_regs->ddrtimingc0);
+		writel(noc_timing->devtodev0,
+		       &ddr_msch_regs->devtodev0);
+		writel(noc_timing->ddrmode,
+		       &ddr_msch_regs->ddrmode);
+
+		/* rank 1 memory clock disable (dfi_dram_clk_disable = 1) */
+		if (sdram_params->ch[channel].rank == 1)
+			setbits_le32(&dram->chan[channel].pctl->denali_ctl[276],
+				     1 << 17);
+	}
+
+	writel(sys_reg, &dram->pmugrf->os_reg2);
+	rk_clrsetreg(&dram->pmusgrf->soc_con4, 0x1f << 10,
+		     sdram_params->base.stride << 10);
+
+	/* reboot hold register set */
+	writel(PRESET_SGRF_HOLD(0) | PRESET_GPIO0_HOLD(1) |
+		PRESET_GPIO1_HOLD(1),
+		&dram->pmucru->pmucru_rstnhold_con[1]);
+	clrsetbits_le32(&dram->cru->glb_rst_con, 0x3, 0x3);
+}
+
+static int switch_to_phy_index1(struct dram_info *dram,
+				 const struct rk3399_sdram_params *sdram_params)
+{
+	u32 channel;
+	u32 *denali_phy;
+	u32 ch_count = sdram_params->base.num_channels;
+	int ret;
+	int i = 0;
+
+	writel(RK_CLRSETBITS(0x03 << 4 | 1 << 2 | 1,
+			     1 << 4 | 1 << 2 | 1),
+			&dram->cic->cic_ctrl0);
+	while (!(readl(&dram->cic->cic_status0) & (1 << 2))) {
+		mdelay(10);
+		i++;
+		if (i > 10) {
+			debug("index1 frequency change overtime\n");
+			return -ETIME;
+		}
+	}
+
+	i = 0;
+	writel(RK_CLRSETBITS(1 << 1, 1 << 1), &dram->cic->cic_ctrl0);
+	while (!(readl(&dram->cic->cic_status0) & (1 << 0))) {
+		mdelay(10);
+		if (i > 10) {
+			debug("index1 frequency done overtime\n");
+			return -ETIME;
+		}
+	}
+
+	for (channel = 0; channel < ch_count; channel++) {
+		denali_phy = dram->chan[channel].publ->denali_phy;
+		clrsetbits_le32(&denali_phy[896], (0x3 << 8) | 1, 1 << 8);
+		ret = data_training(&dram->chan[channel], channel,
+				  sdram_params, PI_FULL_TRAINING);
+		if (ret) {
+			debug("index1 training failed\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int sdram_init(struct dram_info *dram,
+		      const struct rk3399_sdram_params *sdram_params)
+{
+	unsigned char dramtype = sdram_params->base.dramtype;
+	unsigned int ddr_freq = sdram_params->base.ddr_freq;
+	int channel;
+
+	debug("Starting SDRAM initialization...\n");
+
+	if ((dramtype == DDR3 && ddr_freq > 800) ||
+	    (dramtype == LPDDR3 && ddr_freq > 933) ||
+	    (dramtype == LPDDR4 && ddr_freq > 800)) {
+		debug("SDRAM frequency is to high!");
+		return -E2BIG;
+	}
+
+	for (channel = 0; channel < 2; channel++) {
+		const struct chan_info *chan = &dram->chan[channel];
+		struct rk3399_ddr_publ_regs *publ = chan->publ;
+
+		phy_dll_bypass_set(publ, ddr_freq);
+
+		if (channel >= sdram_params->base.num_channels)
+			continue;
+
+		if (pctl_cfg(chan, channel, sdram_params) != 0) {
+			printf("pctl_cfg fail, reset\n");
+			return -EIO;
+		}
+
+		/* LPDDR2/LPDDR3 need to wait DAI complete, max 10us */
+		if (dramtype == LPDDR3)
+			udelay(10);
+
+		if (data_training(chan, channel,
+				  sdram_params, PI_FULL_TRAINING)) {
+			printf("SDRAM initialization failed, reset\n");
+			return -EIO;
+		}
+
+		set_ddrconfig(chan, sdram_params, channel,
+			      sdram_params->ch[channel].ddrconfig);
+	}
+	dram_all_config(dram, sdram_params);
+	switch_to_phy_index1(dram, sdram_params);
+
+	debug("Finish SDRAM initialization...\n");
+	return 0;
+}
+
+static int rk3399_dmc_ofdata_to_platdata(struct udevice *dev)
+{
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct rockchip_dmc_plat *plat = dev_get_platdata(dev);
+	const void *blob = gd->fdt_blob;
+	int node = dev->of_offset;
+	int ret;
+
+	ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params",
+			(u32 *)&plat->sdram_params,
+			sizeof(plat->sdram_params) / sizeof(u32));
+	if (ret) {
+		printf("%s: Cannot read rockchip,sdram-params %d\n",
+		       __func__, ret);
+		return ret;
+	}
+	ret = regmap_init_mem(dev, &plat->map);
+	if (ret)
+		printf("%s: regmap failed %d\n", __func__, ret);
+
+#endif
+	return 0;
+}
+
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+static int conv_of_platdata(struct udevice *dev)
+{
+	struct rockchip_dmc_plat *plat = dev_get_platdata(dev);
+	struct dtd_rockchip_rk3399_dmc *dtplat = &plat->dtplat;
+	int ret;
+
+	ret = regmap_init_mem_platdata(dev, dtplat->reg,
+			ARRAY_SIZE(dtplat->reg) / 4,
+			&plat->map);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+#endif
+
+static int rk3399_dmc_init(struct udevice *dev)
+{
+	struct dram_info *priv = dev_get_priv(dev);
+	struct rockchip_dmc_plat *plat = dev_get_platdata(dev);
+	int ret;
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct rk3399_sdram_params *params = &plat->sdram_params;
+#else
+	struct dtd_rockchip_rk3399_dmc *dtplat = &plat->dtplat;
+	struct rk3399_sdram_params *params =
+					(void *)dtplat->rockchip_sdram_params;
+
+	ret = conv_of_platdata(dev);
+	if (ret)
+		return ret;
+#endif
+
+	priv->cic = syscon_get_first_range(ROCKCHIP_SYSCON_CIC);
+	priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
+	priv->pmusgrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUSGRF);
+	priv->pmucru = rockchip_get_pmucru();
+	priv->cru = rockchip_get_cru();
+	priv->chan[0].pctl = regmap_get_range(plat->map, 0);
+	priv->chan[0].pi = regmap_get_range(plat->map, 1);
+	priv->chan[0].publ = regmap_get_range(plat->map, 2);
+	priv->chan[0].msch = regmap_get_range(plat->map, 3);
+	priv->chan[1].pctl = regmap_get_range(plat->map, 4);
+	priv->chan[1].pi = regmap_get_range(plat->map, 5);
+	priv->chan[1].publ = regmap_get_range(plat->map, 6);
+	priv->chan[1].msch = regmap_get_range(plat->map, 7);
+
+	debug("con reg %p %p %p %p %p %p %p %p\n",
+	      priv->chan[0].pctl, priv->chan[0].pi,
+	      priv->chan[0].publ, priv->chan[0].msch,
+	      priv->chan[1].pctl, priv->chan[1].pi,
+	      priv->chan[1].publ, priv->chan[1].msch);
+	debug("cru %p, cic %p, grf %p, sgrf %p, pmucru %p\n", priv->cru,
+	      priv->cic, priv->pmugrf, priv->pmusgrf, priv->pmucru);
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+	ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &priv->ddr_clk);
+#else
+	ret = clk_get_by_index(dev, 0, &priv->ddr_clk);
+#endif
+	if (ret) {
+		printf("%s clk get failed %d\n", __func__, ret);
+		return ret;
+	}
+	ret = clk_set_rate(&priv->ddr_clk, params->base.ddr_freq * MHz);
+	if (ret < 0) {
+		printf("%s clk set failed %d\n", __func__, ret);
+		return ret;
+	}
+	ret = sdram_init(priv, params);
+	if (ret < 0) {
+		printf("%s DRAM init failed%d\n", __func__, ret);
+		return ret;
+	}
+
+	return 0;
+}
+#endif
+
+size_t sdram_size_mb(struct dram_info *dram)
+{
+	u32 rank, col, bk, cs0_row, cs1_row, bw, row_3_4;
+	size_t chipsize_mb = 0;
+	size_t size_mb = 0;
+	u32 ch;
+
+	u32 sys_reg = readl(&dram->pmugrf->os_reg2);
+	u32 ch_num = 1 + ((sys_reg >> SYS_REG_NUM_CH_SHIFT)
+		       & SYS_REG_NUM_CH_MASK);
+
+	for (ch = 0; ch < ch_num; ch++) {
+		rank = 1 + (sys_reg >> SYS_REG_RANK_SHIFT(ch) &
+			SYS_REG_RANK_MASK);
+		col = 9 + (sys_reg >> SYS_REG_COL_SHIFT(ch) & SYS_REG_COL_MASK);
+		bk = 3 - ((sys_reg >> SYS_REG_BK_SHIFT(ch)) & SYS_REG_BK_MASK);
+		cs0_row = 13 + (sys_reg >> SYS_REG_CS0_ROW_SHIFT(ch) &
+				SYS_REG_CS0_ROW_MASK);
+		cs1_row = 13 + (sys_reg >> SYS_REG_CS1_ROW_SHIFT(ch) &
+				SYS_REG_CS1_ROW_MASK);
+		bw = (2 >> ((sys_reg >> SYS_REG_BW_SHIFT(ch)) &
+			SYS_REG_BW_MASK));
+		row_3_4 = sys_reg >> SYS_REG_ROW_3_4_SHIFT(ch) &
+			SYS_REG_ROW_3_4_MASK;
+
+		chipsize_mb = (1 << (cs0_row + col + bk + bw - 20));
+
+		if (rank > 1)
+			chipsize_mb += chipsize_mb >> (cs0_row - cs1_row);
+		if (row_3_4)
+			chipsize_mb = chipsize_mb * 3 / 4;
+		size_mb += chipsize_mb;
+	}
+
+	/*
+	 * we use the 0x00000000~0xf7ffffff space
+	 * since 0xf8000000~0xffffffff is soc register space
+	 * so we reserve it
+	 */
+	size_mb = min_t(size_t, size_mb, 0xf8000000/(1<<20));
+
+	return size_mb;
+}
+
+static int rk3399_dmc_probe(struct udevice *dev)
+{
+#ifdef CONFIG_SPL_BUILD
+	if (rk3399_dmc_init(dev))
+		return 0;
+#else
+	struct dram_info *priv = dev_get_priv(dev);
+
+	priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
+	debug("%s: pmugrf=%p\n", __func__, priv->pmugrf);
+#endif
+	return 0;
+}
+
+static int rk3399_dmc_get_info(struct udevice *dev, struct ram_info *info)
+{
+	struct dram_info *priv = dev_get_priv(dev);
+
+	info = &priv->info;
+	priv->info.base = 0;
+	priv->info.size = sdram_size_mb(priv) << 20;
+
+	return 0;
+}
+
+static struct ram_ops rk3399_dmc_ops = {
+	.get_info = rk3399_dmc_get_info,
+};
+
+
+static const struct udevice_id rk3399_dmc_ids[] = {
+	{ .compatible = "rockchip,rk3399-dmc" },
+	{ }
+};
+
+U_BOOT_DRIVER(dmc_rk3399) = {
+	.name = "rockchip_rk3399_dmc",
+	.id = UCLASS_RAM,
+	.of_match = rk3399_dmc_ids,
+	.ops = &rk3399_dmc_ops,
+#ifdef CONFIG_SPL_BUILD
+	.ofdata_to_platdata = rk3399_dmc_ofdata_to_platdata,
+#endif
+	.probe = rk3399_dmc_probe,
+#ifdef CONFIG_SPL_BUILD
+	.priv_auto_alloc_size = sizeof(struct dram_info),
+	.platdata_auto_alloc_size = sizeof(struct rockchip_dmc_plat),
+#endif
+};
diff --git a/doc/device-tree-bindings/clock/rockchip,rk3399-dmc.txt b/doc/device-tree-bindings/clock/rockchip,rk3399-dmc.txt
new file mode 100644
index 0000000000..a15dc5d1f8
--- /dev/null
+++ b/doc/device-tree-bindings/clock/rockchip,rk3399-dmc.txt
@@ -0,0 +1,42 @@
+Rockchip Dynamic Memory Controller Driver
+Required properties:
+- compatible: "rockchip,rk3399-dmc", "syscon"
+- rockchip,cru: this driver should access cru regs, so need get cru here
+- rockchip,pmucru: this driver should access pmucru regs, so need get pmucru here
+- rockchip,pmugrf: this driver should access pmugrf regs, so need get pmugrf here
+- rockchip,pmusgrf: this driver should access pmusgrf regs, so need get pmusgrf here
+- rockchip,cic: this driver should access cic regs, so need get cic here
+- reg: dynamic ram protocol controller(PCTL) address, PHY Independent(PI) address, phy controller(PHYCTL) address and memory schedule(MSCH) address
+- clock: must include clock specifiers corresponding to entries in the clock-names property.
+    Must contain
+      dmc_clk: for ddr working frequency
+- rockchip,sdram-params: SDRAM parameters, including all the information by ddr driver:
+    Must contain
+      Genarate by vendor tool and adjust for U-Boot dtsi.
+
+Example:
+	dmc: dmc {
+		u-boot,dm-pre-reloc;
+		compatible = "rockchip,rk3399-dmc";
+		devfreq-events = <&dfi>;
+		interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH 0>;
+		clocks = <&cru SCLK_DDRCLK>;
+		clock-names = "dmc_clk";
+		reg = <0x0 0xffa80000 0x0 0x0800
+		       0x0 0xffa80800 0x0 0x1800
+		       0x0 0xffa82000 0x0 0x2000
+		       0x0 0xffa84000 0x0 0x1000
+		       0x0 0xffa88000 0x0 0x0800
+		       0x0 0xffa88800 0x0 0x1800
+		       0x0 0xffa8a000 0x0 0x2000
+		       0x0 0xffa8c000 0x0 0x1000>;
+	};
+
+	&dmc {
+		rockchip,sdram-params = <
+		0x2
+		0xa
+		0x3
+		...
+		>;
+	};