diff --git a/arch/arm/include/asm/arch-rockchip/ddr_rk3288.h b/arch/arm/include/asm/arch-rockchip/ddr_rk3288.h
new file mode 100644
index 0000000..fccabcd
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/ddr_rk3288.h
@@ -0,0 +1,484 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef _ASM_ARCH_DDR_RK3288_H
+#define _ASM_ARCH_DDR_RK3288_H
+
+struct rk3288_ddr_pctl {
+	u32 scfg;
+	u32 sctl;
+	u32 stat;
+	u32 intrstat;
+	u32 reserved0[12];
+	u32 mcmd;
+	u32 powctl;
+	u32 powstat;
+	u32 cmdtstat;
+	u32 tstaten;
+	u32 reserved1[3];
+	u32 mrrcfg0;
+	u32 mrrstat0;
+	u32 mrrstat1;
+	u32 reserved2[4];
+	u32 mcfg1;
+	u32 mcfg;
+	u32 ppcfg;
+	u32 mstat;
+	u32 lpddr2zqcfg;
+	u32 reserved3;
+	u32 dtupdes;
+	u32 dtuna;
+	u32 dtune;
+	u32 dtuprd0;
+	u32 dtuprd1;
+	u32 dtuprd2;
+	u32 dtuprd3;
+	u32 dtuawdt;
+	u32 reserved4[3];
+	u32 togcnt1u;
+	u32 tinit;
+	u32 trsth;
+	u32 togcnt100n;
+	u32 trefi;
+	u32 tmrd;
+	u32 trfc;
+	u32 trp;
+	u32 trtw;
+	u32 tal;
+	u32 tcl;
+	u32 tcwl;
+	u32 tras;
+	u32 trc;
+	u32 trcd;
+	u32 trrd;
+	u32 trtp;
+	u32 twr;
+	u32 twtr;
+	u32 texsr;
+	u32 txp;
+	u32 txpdll;
+	u32 tzqcs;
+	u32 tzqcsi;
+	u32 tdqs;
+	u32 tcksre;
+	u32 tcksrx;
+	u32 tcke;
+	u32 tmod;
+	u32 trstl;
+	u32 tzqcl;
+	u32 tmrr;
+	u32 tckesr;
+	u32 tdpd;
+	u32 reserved5[14];
+	u32 ecccfg;
+	u32 ecctst;
+	u32 eccclr;
+	u32 ecclog;
+	u32 reserved6[28];
+	u32 dtuwactl;
+	u32 dturactl;
+	u32 dtucfg;
+	u32 dtuectl;
+	u32 dtuwd0;
+	u32 dtuwd1;
+	u32 dtuwd2;
+	u32 dtuwd3;
+	u32 dtuwdm;
+	u32 dturd0;
+	u32 dturd1;
+	u32 dturd2;
+	u32 dturd3;
+	u32 dtulfsrwd;
+	u32 dtulfsrrd;
+	u32 dtueaf;
+	u32 dfitctrldelay;
+	u32 dfiodtcfg;
+	u32 dfiodtcfg1;
+	u32 dfiodtrankmap;
+	u32 dfitphywrdata;
+	u32 dfitphywrlat;
+	u32 reserved7[2];
+	u32 dfitrddataen;
+	u32 dfitphyrdlat;
+	u32 reserved8[2];
+	u32 dfitphyupdtype0;
+	u32 dfitphyupdtype1;
+	u32 dfitphyupdtype2;
+	u32 dfitphyupdtype3;
+	u32 dfitctrlupdmin;
+	u32 dfitctrlupdmax;
+	u32 dfitctrlupddly;
+	u32 reserved9;
+	u32 dfiupdcfg;
+	u32 dfitrefmski;
+	u32 dfitctrlupdi;
+	u32 reserved10[4];
+	u32 dfitrcfg0;
+	u32 dfitrstat0;
+	u32 dfitrwrlvlen;
+	u32 dfitrrdlvlen;
+	u32 dfitrrdlvlgateen;
+	u32 dfiststat0;
+	u32 dfistcfg0;
+	u32 dfistcfg1;
+	u32 reserved11;
+	u32 dfitdramclken;
+	u32 dfitdramclkdis;
+	u32 dfistcfg2;
+	u32 dfistparclr;
+	u32 dfistparlog;
+	u32 reserved12[3];
+	u32 dfilpcfg0;
+	u32 reserved13[3];
+	u32 dfitrwrlvlresp0;
+	u32 dfitrwrlvlresp1;
+	u32 dfitrwrlvlresp2;
+	u32 dfitrrdlvlresp0;
+	u32 dfitrrdlvlresp1;
+	u32 dfitrrdlvlresp2;
+	u32 dfitrwrlvldelay0;
+	u32 dfitrwrlvldelay1;
+	u32 dfitrwrlvldelay2;
+	u32 dfitrrdlvldelay0;
+	u32 dfitrrdlvldelay1;
+	u32 dfitrrdlvldelay2;
+	u32 dfitrrdlvlgatedelay0;
+	u32 dfitrrdlvlgatedelay1;
+	u32 dfitrrdlvlgatedelay2;
+	u32 dfitrcmd;
+	u32 reserved14[46];
+	u32 ipvr;
+	u32 iptr;
+};
+check_member(rk3288_ddr_pctl, iptr, 0x03fc);
+
+struct rk3288_ddr_publ_datx {
+	u32 dxgcr;
+	u32 dxgsr[2];
+	u32 dxdllcr;
+	u32 dxdqtr;
+	u32 dxdqstr;
+	u32 reserved[10];
+};
+
+struct rk3288_ddr_publ {
+	u32 ridr;
+	u32 pir;
+	u32 pgcr;
+	u32 pgsr;
+	u32 dllgcr;
+	u32 acdllcr;
+	u32 ptr[3];
+	u32 aciocr;
+	u32 dxccr;
+	u32 dsgcr;
+	u32 dcr;
+	u32 dtpr[3];
+	u32 mr[4];
+	u32 odtcr;
+	u32 dtar;
+	u32 dtdr[2];
+	u32 reserved1[24];
+	u32 dcuar;
+	u32 dcudr;
+	u32 dcurr;
+	u32 dculr;
+	u32 dcugcr;
+	u32 dcutpr;
+	u32 dcusr[2];
+	u32 reserved2[8];
+	u32 bist[17];
+	u32 reserved3[15];
+	u32 zq0cr[2];
+	u32 zq0sr[2];
+	u32 zq1cr[2];
+	u32 zq1sr[2];
+	u32 zq2cr[2];
+	u32 zq2sr[2];
+	u32 zq3cr[2];
+	u32 zq3sr[2];
+	struct rk3288_ddr_publ_datx datx8[4];
+};
+check_member(rk3288_ddr_publ, datx8[3].dxdqstr, 0x0294);
+
+struct rk3288_msch {
+	u32 coreid;
+	u32 revisionid;
+	u32 ddrconf;
+	u32 ddrtiming;
+	u32 ddrmode;
+	u32 readlatency;
+	u32 reserved1[8];
+	u32 activate;
+	u32 devtodev;
+};
+check_member(rk3288_msch, devtodev, 0x003c);
+
+/* PCT_DFISTCFG0 */
+#define DFI_INIT_START			(1 << 0)
+
+/* PCT_DFISTCFG1 */
+#define DFI_DRAM_CLK_SR_EN		(1 << 0)
+#define DFI_DRAM_CLK_DPD_EN		(1 << 1)
+
+/* PCT_DFISTCFG2 */
+#define DFI_PARITY_INTR_EN		(1 << 0)
+#define DFI_PARITY_EN			(1 << 1)
+
+/* PCT_DFILPCFG0 */
+#define TLP_RESP_TIME_SHIFT		16
+#define LP_SR_EN			(1 << 8)
+#define LP_PD_EN			(1 << 0)
+
+/* PCT_DFITCTRLDELAY */
+#define TCTRL_DELAY_TIME_SHIFT		0
+
+/* PCT_DFITPHYWRDATA */
+#define TPHY_WRDATA_TIME_SHIFT		0
+
+/* PCT_DFITPHYRDLAT */
+#define TPHY_RDLAT_TIME_SHIFT		0
+
+/* PCT_DFITDRAMCLKDIS */
+#define TDRAM_CLK_DIS_TIME_SHIFT	0
+
+/* PCT_DFITDRAMCLKEN */
+#define TDRAM_CLK_EN_TIME_SHIFT		0
+
+/* PCTL_DFIODTCFG */
+#define RANK0_ODT_WRITE_SEL		(1 << 3)
+#define RANK1_ODT_WRITE_SEL		(1 << 11)
+
+/* PCTL_DFIODTCFG1 */
+#define ODT_LEN_BL8_W_SHIFT		16
+
+/* PUBL_ACDLLCR */
+#define ACDLLCR_DLLDIS			(1 << 31)
+#define ACDLLCR_DLLSRST			(1 << 30)
+
+/* PUBL_DXDLLCR */
+#define DXDLLCR_DLLDIS			(1 << 31)
+#define DXDLLCR_DLLSRST			(1 << 30)
+
+/* PUBL_DLLGCR */
+#define DLLGCR_SBIAS			(1 << 30)
+
+/* PUBL_DXGCR */
+#define DQSRTT				(1 << 9)
+#define DQRTT				(1 << 10)
+
+/* PIR */
+#define PIR_INIT			(1 << 0)
+#define PIR_DLLSRST			(1 << 1)
+#define PIR_DLLLOCK			(1 << 2)
+#define PIR_ZCAL			(1 << 3)
+#define PIR_ITMSRST			(1 << 4)
+#define PIR_DRAMRST			(1 << 5)
+#define PIR_DRAMINIT			(1 << 6)
+#define PIR_QSTRN			(1 << 7)
+#define PIR_RVTRN			(1 << 8)
+#define PIR_ICPC			(1 << 16)
+#define PIR_DLLBYP			(1 << 17)
+#define PIR_CTLDINIT			(1 << 18)
+#define PIR_CLRSR			(1 << 28)
+#define PIR_LOCKBYP			(1 << 29)
+#define PIR_ZCALBYP			(1 << 30)
+#define PIR_INITBYP			(1u << 31)
+
+/* PGCR */
+#define PGCR_DFTLMT_SHIFT		3
+#define PGCR_DFTCMP_SHIFT		2
+#define PGCR_DQSCFG_SHIFT		1
+#define PGCR_ITMDMD_SHIFT		0
+
+/* PGSR */
+#define PGSR_IDONE			(1 << 0)
+#define PGSR_DLDONE			(1 << 1)
+#define PGSR_ZCDONE			(1 << 2)
+#define PGSR_DIDONE			(1 << 3)
+#define PGSR_DTDONE			(1 << 4)
+#define PGSR_DTERR			(1 << 5)
+#define PGSR_DTIERR			(1 << 6)
+#define PGSR_DFTERR			(1 << 7)
+#define PGSR_RVERR			(1 << 8)
+#define PGSR_RVEIRR			(1 << 9)
+
+/* PTR0 */
+#define PRT_ITMSRST_SHIFT		18
+#define PRT_DLLLOCK_SHIFT		6
+#define PRT_DLLSRST_SHIFT		0
+
+/* PTR1 */
+#define PRT_DINIT0_SHIFT		0
+#define PRT_DINIT1_SHIFT		19
+
+/* PTR2 */
+#define PRT_DINIT2_SHIFT		0
+#define PRT_DINIT3_SHIFT		17
+
+/* DCR */
+#define DDRMD_LPDDR			0
+#define DDRMD_DDR			1
+#define DDRMD_DDR2			2
+#define DDRMD_DDR3			3
+#define DDRMD_LPDDR2_LPDDR3		4
+#define DDRMD_MASK			7
+#define DDRMD_SHIFT			0
+#define PDQ_MASK			7
+#define PDQ_SHIFT			4
+
+/* DXCCR */
+#define DQSNRES_MASK			0xf
+#define DQSNRES_SHIFT			8
+#define DQSRES_MASK			0xf
+#define DQSRES_SHIFT			4
+
+/* DTPR */
+#define TDQSCKMAX_SHIFT			27
+#define TDQSCKMAX_MASK			7
+#define TDQSCK_SHIFT			24
+#define TDQSCK_MASK			7
+
+/* DSGCR */
+#define DQSGX_SHIFT			5
+#define DQSGX_MASK			7
+#define DQSGE_SHIFT			8
+#define DQSGE_MASK			7
+
+/* SCTL */
+#define INIT_STATE			0
+#define CFG_STATE			1
+#define GO_STATE			2
+#define SLEEP_STATE			3
+#define WAKEUP_STATE			4
+
+/* STAT */
+#define LP_TRIG_SHIFT			4
+#define LP_TRIG_MASK			7
+#define PCTL_STAT_MSK			7
+#define INIT_MEM			0
+#define CONFIG				1
+#define CONFIG_REQ			2
+#define ACCESS				3
+#define ACCESS_REQ			4
+#define LOW_POWER			5
+#define LOW_POWER_ENTRY_REQ		6
+#define LOW_POWER_EXIT_REQ		7
+
+/* ZQCR*/
+#define PD_OUTPUT_SHIFT			0
+#define PU_OUTPUT_SHIFT			5
+#define PD_ONDIE_SHIFT			10
+#define PU_ONDIE_SHIFT			15
+#define ZDEN_SHIFT			28
+
+/* DDLGCR */
+#define SBIAS_BYPASS			(1 << 23)
+
+/* MCFG */
+#define MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT	24
+#define PD_IDLE_SHIFT			8
+#define MDDR_EN				(2 << 22)
+#define LPDDR2_EN			(3 << 22)
+#define DDR2_EN				(0 << 5)
+#define DDR3_EN				(1 << 5)
+#define LPDDR2_S2			(0 << 6)
+#define LPDDR2_S4			(1 << 6)
+#define MDDR_LPDDR2_BL_2		(0 << 20)
+#define MDDR_LPDDR2_BL_4		(1 << 20)
+#define MDDR_LPDDR2_BL_8		(2 << 20)
+#define MDDR_LPDDR2_BL_16		(3 << 20)
+#define DDR2_DDR3_BL_4			0
+#define DDR2_DDR3_BL_8			1
+#define TFAW_SHIFT			18
+#define PD_EXIT_SLOW			(0 << 17)
+#define PD_EXIT_FAST			(1 << 17)
+#define PD_TYPE_SHIFT			16
+#define BURSTLENGTH_SHIFT		20
+
+/* POWCTL */
+#define POWER_UP_START			(1 << 0)
+
+/* POWSTAT */
+#define POWER_UP_DONE			(1 << 0)
+
+/* MCMD */
+enum {
+	DESELECT_CMD			= 0,
+	PREA_CMD,
+	REF_CMD,
+	MRS_CMD,
+	ZQCS_CMD,
+	ZQCL_CMD,
+	RSTL_CMD,
+	MRR_CMD				= 8,
+	DPDE_CMD,
+};
+
+#define LPDDR2_MA_SHIFT			4
+#define LPDDR2_MA_MASK			0xff
+#define LPDDR2_OP_SHIFT			12
+#define LPDDR2_OP_MASK			0xff
+
+#define START_CMD			(1u << 31)
+
+/* DEVTODEV */
+#define BUSWRTORD_SHIFT			4
+#define BUSRDTOWR_SHIFT			2
+#define BUSRDTORD_SHIFT			0
+
+/* mr1 for ddr3 */
+#define DDR3_DLL_DISABLE		1
+
+/*
+ *TODO(sjg@chromium.org): We use a PMU register to store SDRAM information for
+ * passing from SPL to U-Boot. It would probably be better to use a normal C
+ * structure in SRAM.
+ *
+ * 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
+
+#endif
diff --git a/arch/arm/include/asm/arch-rockchip/sdram.h b/arch/arm/include/asm/arch-rockchip/sdram.h
new file mode 100644
index 0000000..d3de42d
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/sdram.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ *
+ * Copyright 2014 Rockchip Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef _ASM_ARCH_RK3288_SDRAM_H__
+#define _ASM_ARCH_RK3288_SDRAM_H__
+
+enum {
+	DDR3 = 3,
+	LPDDR3 = 6,
+	UNUSED = 0xFF,
+};
+
+struct rk3288_sdram_channel {
+	u8 rank;
+	u8 col;
+	u8 bk;
+	u8 bw;
+	u8 dbw;
+	u8 row_3_4;
+	u8 cs0_row;
+	u8 cs1_row;
+};
+
+struct rk3288_sdram_pctl_timing {
+	u32 togcnt1u;
+	u32 tinit;
+	u32 trsth;
+	u32 togcnt100n;
+	u32 trefi;
+	u32 tmrd;
+	u32 trfc;
+	u32 trp;
+	u32 trtw;
+	u32 tal;
+	u32 tcl;
+	u32 tcwl;
+	u32 tras;
+	u32 trc;
+	u32 trcd;
+	u32 trrd;
+	u32 trtp;
+	u32 twr;
+	u32 twtr;
+	u32 texsr;
+	u32 txp;
+	u32 txpdll;
+	u32 tzqcs;
+	u32 tzqcsi;
+	u32 tdqs;
+	u32 tcksre;
+	u32 tcksrx;
+	u32 tcke;
+	u32 tmod;
+	u32 trstl;
+	u32 tzqcl;
+	u32 tmrr;
+	u32 tckesr;
+	u32 tdpd;
+};
+check_member(rk3288_sdram_pctl_timing, tdpd, 0x144 - 0xc0);
+
+struct rk3288_sdram_phy_timing {
+	u32 dtpr0;
+	u32 dtpr1;
+	u32 dtpr2;
+	u32 mr[4];
+};
+
+struct rk3288_base_params {
+	u32 noc_timing;
+	u32 noc_activate;
+	u32 ddrconfig;
+	u32 ddr_freq;
+	u32 dramtype;
+	u32 stride;
+	u32 odt;
+};
+
+struct rk3288_sdram_params {
+	struct rk3288_sdram_channel ch[2];
+	struct rk3288_sdram_pctl_timing pctl_timing;
+	struct rk3288_sdram_phy_timing phy_timing;
+	struct rk3288_base_params base;
+	int num_channels;
+};
+
+#endif
diff --git a/arch/arm/mach-rockchip/rk3288/Makefile b/arch/arm/mach-rockchip/rk3288/Makefile
index 3f9900d..6f62375 100644
--- a/arch/arm/mach-rockchip/rk3288/Makefile
+++ b/arch/arm/mach-rockchip/rk3288/Makefile
@@ -5,4 +5,5 @@
 #
 
 obj-y += reset_rk3288.o
+obj-y += sdram_rk3288.o
 obj-y += syscon_rk3288.o
diff --git a/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c b/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
new file mode 100644
index 0000000..09017cc
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
@@ -0,0 +1,878 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ * Copyright 2014 Rockchip Inc.
+ *
+ * SPDX-License-Identifier:     GPL-2.0
+ *
+ * Adapted from coreboot.
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <errno.h>
+#include <ram.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cru_rk3288.h>
+#include <asm/arch/ddr_rk3288.h>
+#include <asm/arch/grf_rk3288.h>
+#include <asm/arch/pmu_rk3288.h>
+#include <asm/arch/sdram.h>
+#include <linux/err.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct chan_info {
+	struct rk3288_ddr_pctl *pctl;
+	struct rk3288_ddr_publ *publ;
+	struct rk3288_msch *msch;
+};
+
+struct dram_info {
+	struct chan_info chan[2];
+	struct ram_info info;
+	struct udevice *ddr_clk;
+	struct rk3288_cru *cru;
+	struct rk3288_grf *grf;
+	struct rk3288_sgrf *sgrf;
+	struct rk3288_pmu *pmu;
+};
+
+#ifdef CONFIG_SPL_BUILD
+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 ddr_reset(struct rk3288_cru *cru, u32 ch, u32 ctl, u32 phy)
+{
+	u32 phy_ctl_srstn_shift = 4 + 5 * ch;
+	u32 ctl_psrstn_shift = 3 + 5 * ch;
+	u32 ctl_srstn_shift = 2 + 5 * ch;
+	u32 phy_psrstn_shift = 1 + 5 * ch;
+	u32 phy_srstn_shift = 5 * ch;
+
+	rk_clrsetreg(&cru->cru_softrst_con[10],
+		     1 << phy_ctl_srstn_shift | 1 << ctl_psrstn_shift |
+		     1 << ctl_srstn_shift | 1 << phy_psrstn_shift |
+		     1 << phy_srstn_shift,
+		     phy << phy_ctl_srstn_shift | ctl << ctl_psrstn_shift |
+		     ctl << ctl_srstn_shift | phy << phy_psrstn_shift |
+		     phy << phy_srstn_shift);
+}
+
+static void ddr_phy_ctl_reset(struct rk3288_cru *cru, u32 ch, u32 n)
+{
+	u32 phy_ctl_srstn_shift = 4 + 5 * ch;
+
+	rk_clrsetreg(&cru->cru_softrst_con[10],
+		     1 << phy_ctl_srstn_shift, n << phy_ctl_srstn_shift);
+}
+
+static void phy_pctrl_reset(struct rk3288_cru *cru,
+			    struct rk3288_ddr_publ *publ,
+			    u32 channel)
+{
+	int i;
+
+	ddr_reset(cru, channel, 1, 1);
+	udelay(1);
+	clrbits_le32(&publ->acdllcr, ACDLLCR_DLLSRST);
+	for (i = 0; i < 4; i++)
+		clrbits_le32(&publ->datx8[i].dxdllcr, DXDLLCR_DLLSRST);
+
+	udelay(10);
+	setbits_le32(&publ->acdllcr, ACDLLCR_DLLSRST);
+	for (i = 0; i < 4; i++)
+		setbits_le32(&publ->datx8[i].dxdllcr, DXDLLCR_DLLSRST);
+
+	udelay(10);
+	ddr_reset(cru, channel, 1, 0);
+	udelay(10);
+	ddr_reset(cru, channel, 0, 0);
+	udelay(10);
+}
+
+static void phy_dll_bypass_set(struct rk3288_ddr_publ *publ,
+	u32 freq)
+{
+	int i;
+	if (freq <= 250000000) {
+		if (freq <= 150000000)
+			clrbits_le32(&publ->dllgcr, SBIAS_BYPASS);
+		else
+			setbits_le32(&publ->dllgcr, SBIAS_BYPASS);
+		setbits_le32(&publ->acdllcr, ACDLLCR_DLLDIS);
+		for (i = 0; i < 4; i++)
+			setbits_le32(&publ->datx8[i].dxdllcr,
+				     DXDLLCR_DLLDIS);
+
+		setbits_le32(&publ->pir, PIR_DLLBYP);
+	} else {
+		clrbits_le32(&publ->dllgcr, SBIAS_BYPASS);
+		clrbits_le32(&publ->acdllcr, ACDLLCR_DLLDIS);
+		for (i = 0; i < 4; i++) {
+			clrbits_le32(&publ->datx8[i].dxdllcr,
+				     DXDLLCR_DLLDIS);
+		}
+
+		clrbits_le32(&publ->pir, PIR_DLLBYP);
+	}
+}
+
+static void dfi_cfg(struct rk3288_ddr_pctl *pctl, u32 dramtype)
+{
+	writel(DFI_INIT_START, &pctl->dfistcfg0);
+	writel(DFI_DRAM_CLK_SR_EN | DFI_DRAM_CLK_DPD_EN,
+	       &pctl->dfistcfg1);
+	writel(DFI_PARITY_INTR_EN | DFI_PARITY_EN, &pctl->dfistcfg2);
+	writel(7 << TLP_RESP_TIME_SHIFT | LP_SR_EN | LP_PD_EN,
+	       &pctl->dfilpcfg0);
+
+	writel(2 << TCTRL_DELAY_TIME_SHIFT, &pctl->dfitctrldelay);
+	writel(1 << TPHY_WRDATA_TIME_SHIFT, &pctl->dfitphywrdata);
+	writel(0xf << TPHY_RDLAT_TIME_SHIFT, &pctl->dfitphyrdlat);
+	writel(2 << TDRAM_CLK_DIS_TIME_SHIFT, &pctl->dfitdramclkdis);
+	writel(2 << TDRAM_CLK_EN_TIME_SHIFT, &pctl->dfitdramclken);
+	writel(1, &pctl->dfitphyupdtype0);
+
+	/* cs0 and cs1 write odt enable */
+	writel((RANK0_ODT_WRITE_SEL | RANK1_ODT_WRITE_SEL),
+	       &pctl->dfiodtcfg);
+	/* odt write length */
+	writel(7 << ODT_LEN_BL8_W_SHIFT, &pctl->dfiodtcfg1);
+	/* phyupd and ctrlupd disabled */
+	writel(0, &pctl->dfiupdcfg);
+}
+
+static void ddr_set_enable(struct rk3288_grf *grf, uint channel, bool enable)
+{
+	uint val = 0;
+
+	if (enable) {
+		val = 1 << (channel ? DDR1_16BIT_EN_SHIFT :
+				DDR0_16BIT_EN_SHIFT);
+	}
+	rk_clrsetreg(&grf->soc_con0,
+		     1 << (channel ? DDR1_16BIT_EN_SHIFT : DDR0_16BIT_EN_SHIFT),
+		     val);
+}
+
+static void ddr_set_ddr3_mode(struct rk3288_grf *grf, uint channel,
+			      bool ddr3_mode)
+{
+	uint mask, val;
+
+	mask = 1 << (channel ? MSCH1_MAINDDR3_SHIFT : MSCH0_MAINDDR3_SHIFT);
+	val = ddr3_mode << (channel ? MSCH1_MAINDDR3_SHIFT :
+					MSCH0_MAINDDR3_SHIFT);
+	rk_clrsetreg(&grf->soc_con0, mask, val);
+}
+
+static void ddr_set_en_bst_odt(struct rk3288_grf *grf, uint channel,
+			       bool enable, bool enable_bst, bool enable_odt)
+{
+	uint mask;
+	bool disable_bst = !enable_bst;
+
+	mask = channel ?
+		(1 << LPDDR3_EN1_SHIFT | 1 << UPCTL1_BST_DIABLE_SHIFT |
+			1 << UPCTL1_LPDDR3_ODT_EN_SHIFT) :
+		(1 << LPDDR3_EN0_SHIFT | 1 << UPCTL0_BST_DIABLE_SHIFT |
+			1 << UPCTL0_LPDDR3_ODT_EN_SHIFT);
+	rk_clrsetreg(&grf->soc_con2, mask,
+		     enable << (channel ? LPDDR3_EN1_SHIFT : LPDDR3_EN0_SHIFT) |
+		     disable_bst << (channel ? UPCTL1_BST_DIABLE_SHIFT :
+				UPCTL0_BST_DIABLE_SHIFT) |
+		     enable_odt << (channel ? UPCTL1_LPDDR3_ODT_EN_SHIFT :
+				UPCTL0_LPDDR3_ODT_EN_SHIFT));
+}
+
+static void pctl_cfg(u32 channel, struct rk3288_ddr_pctl *pctl,
+		     const struct rk3288_sdram_params *sdram_params,
+		     struct rk3288_grf *grf)
+{
+	unsigned int burstlen;
+
+	burstlen = (sdram_params->base.noc_timing >> 18) & 0x7;
+	copy_to_reg(&pctl->togcnt1u, &sdram_params->pctl_timing.togcnt1u,
+		    sizeof(sdram_params->pctl_timing));
+	switch (sdram_params->base.dramtype) {
+	case LPDDR3:
+		writel(sdram_params->pctl_timing.tcl - 1,
+		       &pctl->dfitrddataen);
+		writel(sdram_params->pctl_timing.tcwl,
+		       &pctl->dfitphywrlat);
+		burstlen >>= 1;
+		writel(LPDDR2_S4 | 0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT |
+		       LPDDR2_EN | burstlen << BURSTLENGTH_SHIFT |
+		       (6 - 4) << TFAW_SHIFT | PD_EXIT_FAST |
+		       1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
+		       &pctl->mcfg);
+		ddr_set_ddr3_mode(grf, channel, false);
+		ddr_set_enable(grf, channel, true);
+		ddr_set_en_bst_odt(grf, channel, true, false,
+				   sdram_params->base.odt);
+		break;
+	case DDR3:
+		if (sdram_params->phy_timing.mr[1] & DDR3_DLL_DISABLE) {
+			writel(sdram_params->pctl_timing.tcl - 3,
+			       &pctl->dfitrddataen);
+		} else {
+			writel(sdram_params->pctl_timing.tcl - 2,
+			       &pctl->dfitrddataen);
+		}
+		writel(sdram_params->pctl_timing.tcwl - 1,
+		       &pctl->dfitphywrlat);
+		writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | DDR3_EN |
+		       DDR2_DDR3_BL_8 | (6 - 4) << TFAW_SHIFT | PD_EXIT_SLOW |
+		       1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
+		       &pctl->mcfg);
+		ddr_set_ddr3_mode(grf, channel, true);
+		ddr_set_enable(grf, channel, true);
+
+		ddr_set_en_bst_odt(grf, channel, false, true, false);
+		break;
+	}
+
+	setbits_le32(&pctl->scfg, 1);
+}
+
+static void phy_cfg(const struct chan_info *chan, u32 channel,
+		    const struct rk3288_sdram_params *sdram_params)
+{
+	struct rk3288_ddr_publ *publ = chan->publ;
+	struct rk3288_msch *msch = chan->msch;
+	uint ddr_freq_mhz = sdram_params->base.ddr_freq / 1000000;
+	u32 dinit2, tmp;
+	int i;
+
+	dinit2 = DIV_ROUND_UP(ddr_freq_mhz * 200000, 1000);
+	/* DDR PHY Timing */
+	copy_to_reg(&publ->dtpr[0], &sdram_params->phy_timing.dtpr0,
+		    sizeof(sdram_params->phy_timing));
+	writel(sdram_params->base.noc_timing, &msch->ddrtiming);
+	writel(0x3f, &msch->readlatency);
+	writel(sdram_params->base.noc_activate, &msch->activate);
+	writel(2 << BUSWRTORD_SHIFT | 2 << BUSRDTOWR_SHIFT |
+	       1 << BUSRDTORD_SHIFT, &msch->devtodev);
+	writel(DIV_ROUND_UP(ddr_freq_mhz * 5120, 1000) << PRT_DLLLOCK_SHIFT |
+	       DIV_ROUND_UP(ddr_freq_mhz * 50, 1000) << PRT_DLLSRST_SHIFT |
+	       8 << PRT_ITMSRST_SHIFT, &publ->ptr[0]);
+	writel(DIV_ROUND_UP(ddr_freq_mhz * 500000, 1000) << PRT_DINIT0_SHIFT |
+	       DIV_ROUND_UP(ddr_freq_mhz * 400, 1000) << PRT_DINIT1_SHIFT,
+	       &publ->ptr[1]);
+	writel(min(dinit2, 0x1ffffU) << PRT_DINIT2_SHIFT |
+	       DIV_ROUND_UP(ddr_freq_mhz * 1000, 1000) << PRT_DINIT3_SHIFT,
+	       &publ->ptr[2]);
+
+	switch (sdram_params->base.dramtype) {
+	case LPDDR3:
+		clrsetbits_le32(&publ->pgcr, 0x1F,
+				0 << PGCR_DFTLMT_SHIFT |
+				0 << PGCR_DFTCMP_SHIFT |
+				1 << PGCR_DQSCFG_SHIFT |
+				0 << PGCR_ITMDMD_SHIFT);
+		/* DDRMODE select LPDDR3 */
+		clrsetbits_le32(&publ->dcr, DDRMD_MASK << DDRMD_SHIFT,
+				DDRMD_LPDDR2_LPDDR3 << DDRMD_SHIFT);
+		clrsetbits_le32(&publ->dxccr,
+				DQSNRES_MASK << DQSNRES_SHIFT |
+				DQSRES_MASK << DQSRES_SHIFT,
+				4 << DQSRES_SHIFT | 0xc << DQSNRES_SHIFT);
+		tmp = readl(&publ->dtpr[1]);
+		tmp = ((tmp >> TDQSCKMAX_SHIFT) & TDQSCKMAX_MASK) -
+			((tmp >> TDQSCK_SHIFT) & TDQSCK_MASK);
+		clrsetbits_le32(&publ->dsgcr,
+				DQSGE_MASK << DQSGE_SHIFT |
+				DQSGX_MASK << DQSGX_SHIFT,
+				tmp << DQSGE_SHIFT | tmp << DQSGX_SHIFT);
+		break;
+	case DDR3:
+		clrbits_le32(&publ->pgcr, 0x1f);
+		clrsetbits_le32(&publ->dcr, DDRMD_MASK << DDRMD_SHIFT,
+				DDRMD_DDR3 << DDRMD_SHIFT);
+		break;
+	}
+	if (sdram_params->base.odt) {
+		/*dynamic RTT enable */
+		for (i = 0; i < 4; i++)
+			setbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT);
+	} else {
+		/*dynamic RTT disable */
+		for (i = 0; i < 4; i++)
+			clrbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT);
+	}
+}
+
+static void phy_init(struct rk3288_ddr_publ *publ)
+{
+	setbits_le32(&publ->pir, PIR_INIT | PIR_DLLSRST
+		| PIR_DLLLOCK | PIR_ZCAL | PIR_ITMSRST | PIR_CLRSR);
+	udelay(1);
+	while ((readl(&publ->pgsr) &
+		(PGSR_IDONE | PGSR_DLDONE | PGSR_ZCDONE)) !=
+		(PGSR_IDONE | PGSR_DLDONE | PGSR_ZCDONE))
+		;
+}
+
+static void send_command(struct rk3288_ddr_pctl *pctl, u32 rank,
+			 u32 cmd, u32 arg)
+{
+	writel((START_CMD | (rank << 20) | arg | cmd), &pctl->mcmd);
+	udelay(1);
+	while (readl(&pctl->mcmd) & START_CMD)
+		;
+}
+
+static inline void send_command_op(struct rk3288_ddr_pctl *pctl,
+				   u32 rank, u32 cmd, u32 ma, u32 op)
+{
+	send_command(pctl, rank, cmd, (ma & LPDDR2_MA_MASK) << LPDDR2_MA_SHIFT |
+		     (op & LPDDR2_OP_MASK) << LPDDR2_OP_SHIFT);
+}
+
+static void memory_init(struct rk3288_ddr_publ *publ,
+			u32 dramtype)
+{
+	setbits_le32(&publ->pir,
+		     (PIR_INIT | PIR_DRAMINIT | PIR_LOCKBYP
+		      | PIR_ZCALBYP | PIR_CLRSR | PIR_ICPC
+		      | (dramtype == DDR3 ? PIR_DRAMRST : 0)));
+	udelay(1);
+	while ((readl(&publ->pgsr) & (PGSR_IDONE | PGSR_DLDONE))
+		!= (PGSR_IDONE | PGSR_DLDONE))
+		;
+}
+
+static void move_to_config_state(struct rk3288_ddr_publ *publ,
+				 struct rk3288_ddr_pctl *pctl)
+{
+	unsigned int state;
+
+	while (1) {
+		state = readl(&pctl->stat) & PCTL_STAT_MSK;
+
+		switch (state) {
+		case LOW_POWER:
+			writel(WAKEUP_STATE, &pctl->sctl);
+			while ((readl(&pctl->stat) & PCTL_STAT_MSK)
+				!= ACCESS)
+				;
+			/* wait DLL lock */
+			while ((readl(&publ->pgsr) & PGSR_DLDONE)
+				!= PGSR_DLDONE)
+				;
+			/* if at low power state,need wakeup first,
+			 * and then enter the config
+			 * so here no break.
+			 */
+		case ACCESS:
+			/* no break */
+		case INIT_MEM:
+			writel(CFG_STATE, &pctl->sctl);
+			while ((readl(&pctl->stat) & PCTL_STAT_MSK) != CONFIG)
+				;
+			break;
+		case CONFIG:
+			return;
+		default:
+			break;
+		}
+	}
+}
+
+static void set_bandwidth_ratio(const struct chan_info *chan, u32 channel,
+				u32 n, struct rk3288_grf *grf)
+{
+	struct rk3288_ddr_pctl *pctl = chan->pctl;
+	struct rk3288_ddr_publ *publ = chan->publ;
+	struct rk3288_msch *msch = chan->msch;
+
+	if (n == 1) {
+		setbits_le32(&pctl->ppcfg, 1);
+		writel(RK_SETBITS(1 << (8 + channel)), &grf->soc_con0);
+		setbits_le32(&msch->ddrtiming, 1 << 31);
+		/* Data Byte disable*/
+		clrbits_le32(&publ->datx8[2].dxgcr, 1);
+		clrbits_le32(&publ->datx8[3].dxgcr, 1);
+		/*disable DLL */
+		setbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLDIS);
+		setbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLDIS);
+	} else {
+		clrbits_le32(&pctl->ppcfg, 1);
+		writel(RK_CLRBITS(1 << (8 + channel)), &grf->soc_con0);
+		clrbits_le32(&msch->ddrtiming, 1 << 31);
+		/* Data Byte enable*/
+		setbits_le32(&publ->datx8[2].dxgcr, 1);
+		setbits_le32(&publ->datx8[3].dxgcr, 1);
+
+		/*enable DLL */
+		clrbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLDIS);
+		clrbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLDIS);
+		/* reset DLL */
+		clrbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLSRST);
+		clrbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLSRST);
+		udelay(10);
+		setbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLSRST);
+		setbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLSRST);
+	}
+	setbits_le32(&pctl->dfistcfg0, 1 << 2);
+}
+
+static int data_training(const struct chan_info *chan, u32 channel,
+			 const struct rk3288_sdram_params *sdram_params)
+{
+	unsigned int j;
+	int ret = 0;
+	u32 rank;
+	int i;
+	u32 step[2] = { PIR_QSTRN, PIR_RVTRN };
+	struct rk3288_ddr_publ *publ = chan->publ;
+	struct rk3288_ddr_pctl *pctl = chan->pctl;
+
+	/* disable auto refresh */
+	writel(0, &pctl->trefi);
+
+	if (sdram_params->base.dramtype != LPDDR3)
+		setbits_le32(&publ->pgcr, 1 << PGCR_DQSCFG_SHIFT);
+	rank = sdram_params->ch[channel].rank | 1;
+	for (j = 0; j < ARRAY_SIZE(step); j++) {
+		/*
+		 * trigger QSTRN and RVTRN
+		 * clear DTDONE status
+		 */
+		setbits_le32(&publ->pir, PIR_CLRSR);
+
+		/* trigger DTT */
+		setbits_le32(&publ->pir,
+			     PIR_INIT | step[j] | PIR_LOCKBYP | PIR_ZCALBYP |
+			     PIR_CLRSR);
+		udelay(1);
+		/* wait echo byte DTDONE */
+		while ((readl(&publ->datx8[0].dxgsr[0]) & rank)
+			!= rank)
+			;
+		while ((readl(&publ->datx8[1].dxgsr[0]) & rank)
+			!= rank)
+			;
+		if (!(readl(&pctl->ppcfg) & 1)) {
+			while ((readl(&publ->datx8[2].dxgsr[0])
+				& rank) != rank)
+				;
+			while ((readl(&publ->datx8[3].dxgsr[0])
+				& rank) != rank)
+				;
+		}
+		if (readl(&publ->pgsr) &
+		    (PGSR_DTERR | PGSR_RVERR | PGSR_RVEIRR)) {
+			ret = -1;
+			break;
+		}
+	}
+	/* send some auto refresh to complement the lost while DTT */
+	for (i = 0; i < (rank > 1 ? 8 : 4); i++)
+		send_command(pctl, rank, REF_CMD, 0);
+
+	if (sdram_params->base.dramtype != LPDDR3)
+		clrbits_le32(&publ->pgcr, 1 << PGCR_DQSCFG_SHIFT);
+
+	/* resume auto refresh */
+	writel(sdram_params->pctl_timing.trefi, &pctl->trefi);
+
+	return ret;
+}
+
+static void move_to_access_state(const struct chan_info *chan)
+{
+	struct rk3288_ddr_publ *publ = chan->publ;
+	struct rk3288_ddr_pctl *pctl = chan->pctl;
+	unsigned int state;
+
+	while (1) {
+		state = readl(&pctl->stat) & PCTL_STAT_MSK;
+
+		switch (state) {
+		case LOW_POWER:
+			if (((readl(&pctl->stat) >> LP_TRIG_SHIFT) &
+					LP_TRIG_MASK) == 1)
+				return;
+
+			writel(WAKEUP_STATE, &pctl->sctl);
+			while ((readl(&pctl->stat) & PCTL_STAT_MSK) != ACCESS)
+				;
+			/* wait DLL lock */
+			while ((readl(&publ->pgsr) & PGSR_DLDONE)
+				!= PGSR_DLDONE)
+				;
+			break;
+		case INIT_MEM:
+			writel(CFG_STATE, &pctl->sctl);
+			while ((readl(&pctl->stat) & PCTL_STAT_MSK) != CONFIG)
+				;
+		case CONFIG:
+			writel(GO_STATE, &pctl->sctl);
+			while ((readl(&pctl->stat) & PCTL_STAT_MSK) == CONFIG)
+				;
+			break;
+		case ACCESS:
+			return;
+		default:
+			break;
+		}
+	}
+}
+
+static void dram_cfg_rbc(const struct chan_info *chan, u32 chnum,
+			 const struct rk3288_sdram_params *sdram_params)
+{
+	struct rk3288_ddr_publ *publ = chan->publ;
+
+	if (sdram_params->ch[chnum].bk == 3)
+		clrsetbits_le32(&publ->dcr, PDQ_MASK << PDQ_SHIFT,
+				1 << PDQ_SHIFT);
+	else
+		clrbits_le32(&publ->dcr, PDQ_MASK << PDQ_SHIFT);
+
+	writel(sdram_params->base.ddrconfig, &chan->msch->ddrconf);
+}
+
+static void dram_all_config(const struct dram_info *dram,
+			    const struct rk3288_sdram_params *sdram_params)
+{
+	unsigned int chan;
+	u32 sys_reg = 0;
+
+	sys_reg |= sdram_params->base.dramtype << SYS_REG_DDRTYPE_SHIFT;
+	sys_reg |= (sdram_params->num_channels - 1) << SYS_REG_NUM_CH_SHIFT;
+	for (chan = 0; chan < sdram_params->num_channels; chan++) {
+		const struct rk3288_sdram_channel *info =
+			&sdram_params->ch[chan];
+
+		sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(chan);
+		sys_reg |= chan << SYS_REG_CHINFO_SHIFT(chan);
+		sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(chan);
+		sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(chan);
+		sys_reg |= info->bk == 3 ? 1 << SYS_REG_BK_SHIFT(chan) : 0;
+		sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(chan);
+		sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(chan);
+		sys_reg |= info->bw << SYS_REG_BW_SHIFT(chan);
+		sys_reg |= info->dbw << SYS_REG_DBW_SHIFT(chan);
+
+		dram_cfg_rbc(&dram->chan[chan], chan, sdram_params);
+	}
+	writel(sys_reg, &dram->pmu->sys_reg[2]);
+	writel(RK_CLRSETBITS(0x1F, sdram_params->base.stride),
+	       &dram->sgrf->soc_con2);
+}
+
+static int sdram_init(const struct dram_info *dram,
+		      const struct rk3288_sdram_params *sdram_params)
+{
+	int channel;
+	int zqcr;
+	int ret;
+
+	debug("%s start\n", __func__);
+	if ((sdram_params->base.dramtype == DDR3 &&
+	     sdram_params->base.ddr_freq > 800000000) ||
+	    (sdram_params->base.dramtype == LPDDR3 &&
+	     sdram_params->base.ddr_freq > 533000000)) {
+		debug("SDRAM frequency is too high!");
+		return -E2BIG;
+	}
+
+	debug("ddr clk %s\n", dram->ddr_clk->name);
+	ret = clk_set_rate(dram->ddr_clk, sdram_params->base.ddr_freq);
+	debug("ret=%d\n", ret);
+	if (ret) {
+		debug("Could not set DDR clock\n");
+		return ret;
+	}
+
+	for (channel = 0; channel < 2; channel++) {
+		const struct chan_info *chan = &dram->chan[channel];
+		struct rk3288_ddr_pctl *pctl = chan->pctl;
+		struct rk3288_ddr_publ *publ = chan->publ;
+
+		phy_pctrl_reset(dram->cru, publ, channel);
+		phy_dll_bypass_set(publ, sdram_params->base.ddr_freq);
+
+		if (channel >= sdram_params->num_channels)
+			continue;
+
+		dfi_cfg(pctl, sdram_params->base.dramtype);
+
+		pctl_cfg(channel, pctl, sdram_params, dram->grf);
+
+		phy_cfg(chan, channel, sdram_params);
+
+		phy_init(publ);
+
+		writel(POWER_UP_START, &pctl->powctl);
+		while (!(readl(&pctl->powstat) & POWER_UP_DONE))
+			;
+
+		memory_init(publ, sdram_params->base.dramtype);
+		move_to_config_state(publ, pctl);
+
+		if (sdram_params->base.dramtype == LPDDR3) {
+			send_command(pctl, 3, DESELECT_CMD, 0);
+			udelay(1);
+			send_command(pctl, 3, PREA_CMD, 0);
+			udelay(1);
+			send_command_op(pctl, 3, MRS_CMD, 63, 0xfc);
+			udelay(1);
+			send_command_op(pctl, 3, MRS_CMD, 1,
+					sdram_params->phy_timing.mr[1]);
+			udelay(1);
+			send_command_op(pctl, 3, MRS_CMD, 2,
+					sdram_params->phy_timing.mr[2]);
+			udelay(1);
+			send_command_op(pctl, 3, MRS_CMD, 3,
+					sdram_params->phy_timing.mr[3]);
+			udelay(1);
+		}
+
+		set_bandwidth_ratio(chan, channel,
+				    sdram_params->ch[channel].bw, dram->grf);
+		/*
+		 * set cs
+		 * CS0, n=1
+		 * CS1, n=2
+		 * CS0 & CS1, n = 3
+		 */
+		clrsetbits_le32(&publ->pgcr, 0xF << 18,
+				(sdram_params->ch[channel].rank | 1) << 18);
+		/* DS=40ohm,ODT=155ohm */
+		zqcr = 1 << ZDEN_SHIFT | 2 << PU_ONDIE_SHIFT |
+			2 << PD_ONDIE_SHIFT | 0x19 << PU_OUTPUT_SHIFT |
+			0x19 << PD_OUTPUT_SHIFT;
+		writel(zqcr, &publ->zq1cr[0]);
+		writel(zqcr, &publ->zq0cr[0]);
+
+		if (sdram_params->base.dramtype == LPDDR3) {
+			/* LPDDR2/LPDDR3 need to wait DAI complete, max 10us */
+			udelay(10);
+			send_command_op(pctl,
+					sdram_params->ch[channel].rank | 1,
+					MRS_CMD, 11,
+					sdram_params->base.odt ? 3 : 0);
+			if (channel == 0) {
+				writel(0, &pctl->mrrcfg0);
+				send_command_op(pctl, 1, MRR_CMD, 8, 0);
+				/* S8 */
+				if ((readl(&pctl->mrrstat0) & 0x3) != 3) {
+					debug("failed!");
+					return -EREMOTEIO;
+				}
+			}
+		}
+
+		if (-1 == data_training(chan, channel, sdram_params)) {
+			if (sdram_params->base.dramtype == LPDDR3) {
+				ddr_phy_ctl_reset(dram->cru, channel, 1);
+				udelay(10);
+				ddr_phy_ctl_reset(dram->cru, channel, 0);
+				udelay(10);
+			}
+			debug("failed!");
+			return -EIO;
+		}
+
+		if (sdram_params->base.dramtype == LPDDR3) {
+			u32 i;
+			writel(0, &pctl->mrrcfg0);
+			for (i = 0; i < 17; i++)
+				send_command_op(pctl, 1, MRR_CMD, i, 0);
+		}
+		move_to_access_state(chan);
+	}
+	dram_all_config(dram, sdram_params);
+	debug("%s done\n", __func__);
+
+	return 0;
+}
+#endif
+
+size_t sdram_size_mb(struct rk3288_pmu *pmu)
+{
+	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(&pmu->sys_reg[2]);
+	u32 chans;
+
+	chans = 1 + ((sys_reg >> SYS_REG_NUM_CH_SHIFT) & SYS_REG_NUM_CH_MASK);
+
+	for (ch = 0; ch < chans; 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 = sys_reg & (1 << SYS_REG_BK_SHIFT(ch)) ? 3 : 0;
+		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 = (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 0x00000000~0xfeffffff space since 0xff000000~0xffffffff
+	* is SoC register space (i.e. reserved)
+	*/
+	size_mb = min(size_mb, 0xff000000 >> 20);
+
+	return size_mb;
+}
+
+#ifdef CONFIG_SPL_BUILD
+static int setup_sdram(struct udevice *dev)
+{
+	struct dram_info *priv = dev_get_priv(dev);
+	struct rk3288_sdram_params params;
+	const void *blob = gd->fdt_blob;
+	int node = dev->of_offset;
+	int i, ret;
+
+	params.num_channels = fdtdec_get_int(blob, node,
+					     "rockchip,num-channels", 1);
+	for (i = 0; i < params.num_channels; i++) {
+		ret = fdtdec_get_byte_array(blob, node,
+					    "rockchip,sdram-channel",
+					    (u8 *)&params.ch[i],
+					    sizeof(params.ch[i]));
+		if (ret) {
+			debug("%s: Cannot read rockchip,sdram-channel\n",
+			      __func__);
+			return -EINVAL;
+		}
+	}
+	ret = fdtdec_get_int_array(blob, node, "rockchip,pctl-timing",
+				   (u32 *)&params.pctl_timing,
+				   sizeof(params.pctl_timing) / sizeof(u32));
+	if (ret) {
+		debug("%s: Cannot read rockchip,pctl-timing\n", __func__);
+		return -EINVAL;
+	}
+	ret = fdtdec_get_int_array(blob, node, "rockchip,phy-timing",
+				   (u32 *)&params.phy_timing,
+				   sizeof(params.phy_timing) / sizeof(u32));
+	if (ret) {
+		debug("%s: Cannot read rockchip,phy-timing\n", __func__);
+		return -EINVAL;
+	}
+	ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params",
+				   (u32 *)&params.base,
+				   sizeof(params.base) / sizeof(u32));
+	if (ret) {
+		debug("%s: Cannot read rockchip,sdram-params\n", __func__);
+		return -EINVAL;
+	}
+
+	return sdram_init(priv, &params);
+}
+#endif
+
+static int rk3288_dmc_probe(struct udevice *dev)
+{
+	struct dram_info *priv = dev_get_priv(dev);
+	struct regmap *map;
+	int ret;
+
+	map = syscon_get_regmap_by_driver_data(ROCKCHIP_SYSCON_NOC);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+	priv->chan[0].msch = regmap_get_range(map, 0);
+	priv->chan[1].msch = (struct rk3288_msch *)
+			(regmap_get_range(map, 0) + 0x80);
+
+	map = syscon_get_regmap_by_driver_data(ROCKCHIP_SYSCON_GRF);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+	priv->grf = regmap_get_range(map, 0);
+
+	map = syscon_get_regmap_by_driver_data(ROCKCHIP_SYSCON_SGRF);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+	priv->sgrf = regmap_get_range(map, 0);
+
+	map = syscon_get_regmap_by_driver_data(ROCKCHIP_SYSCON_PMU);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+	priv->pmu = regmap_get_range(map, 0);
+
+	ret = regmap_init_mem(dev, &map);
+	if (ret)
+		return ret;
+	priv->chan[0].pctl = regmap_get_range(map, 0);
+	priv->chan[0].publ = regmap_get_range(map, 1);
+	priv->chan[1].pctl = regmap_get_range(map, 2);
+	priv->chan[1].publ = regmap_get_range(map, 3);
+
+	ret = uclass_get_device(UCLASS_CLK, CLK_DDR, &priv->ddr_clk);
+	if (ret)
+		return ret;
+
+	priv->cru = rockchip_get_cru();
+	if (IS_ERR(priv->cru))
+		return PTR_ERR(priv->cru);
+#ifdef CONFIG_SPL_BUILD
+	ret = setup_sdram(dev);
+	if (ret)
+		return ret;
+#endif
+	priv->info.base = 0;
+	priv->info.size = sdram_size_mb(priv->pmu) << 20;
+
+	return 0;
+}
+
+static int rk3288_dmc_get_info(struct udevice *dev, struct ram_info *info)
+{
+	struct dram_info *priv = dev_get_priv(dev);
+
+	*info = priv->info;
+
+	return 0;
+}
+
+static struct ram_ops rk3288_dmc_ops = {
+	.get_info = rk3288_dmc_get_info,
+};
+
+static const struct udevice_id rk3288_dmc_ids[] = {
+	{ .compatible = "rockchip,rk3288-dmc" },
+	{ }
+};
+
+U_BOOT_DRIVER(dmc_rk3288) = {
+	.name = "rk3288_dmc",
+	.id = UCLASS_RAM,
+	.of_match = rk3288_dmc_ids,
+	.ops = &rk3288_dmc_ops,
+	.probe = rk3288_dmc_probe,
+	.priv_auto_alloc_size = sizeof(struct dram_info),
+};