diff --git a/arch/arm/include/asm/arch-rockchip/sdram_px30.h b/arch/arm/include/asm/arch-rockchip/sdram_px30.h
new file mode 100644
index 0000000000..9b608a9224
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/sdram_px30.h
@@ -0,0 +1,212 @@
+/* SPDX-License-Identifier:     GPL-2.0+ */
+/*
+ * Copyright (C) 2018 Rockchip Electronics Co., Ltd
+ */
+
+#ifndef _ASM_ARCH_SDRAM_PX30_H
+#define _ASM_ARCH_SDRAM_PX30_H
+#include <asm/arch-rockchip/sdram_common.h>
+#include <asm/arch-rockchip/sdram_msch.h>
+#include <asm/arch-rockchip/sdram_pctl_px30.h>
+#include <asm/arch-rockchip/sdram_phy_px30.h>
+#include <asm/arch-rockchip/sdram_phy_ron_rtt_px30.h>
+
+#define SR_IDLE				93
+#define PD_IDLE				13
+
+/* PMUGRF */
+#define PMUGRF_OS_REG0			(0x200)
+#define PMUGRF_OS_REG(n)		(PMUGRF_OS_REG0 + (n) * 4)
+
+/* DDR GRF */
+#define DDR_GRF_CON(n)			(0 + (n) * 4)
+#define DDR_GRF_STATUS_BASE		(0X100)
+#define DDR_GRF_STATUS(n)		(DDR_GRF_STATUS_BASE + (n) * 4)
+#define DDR_GRF_LP_CON			(0x20)
+
+#define SPLIT_MODE_32_L16_VALID		(0)
+#define SPLIT_MODE_32_H16_VALID		(1)
+#define SPLIT_MODE_16_L8_VALID		(2)
+#define SPLIT_MODE_16_H8_VALID		(3)
+
+#define DDR_GRF_SPLIT_CON		(0x8)
+#define SPLIT_MODE_MASK			(0x3)
+#define SPLIT_MODE_OFFSET		(9)
+#define SPLIT_BYPASS_MASK		(1)
+#define SPLIT_BYPASS_OFFSET		(8)
+#define SPLIT_SIZE_MASK			(0xff)
+#define SPLIT_SIZE_OFFSET		(0)
+
+/* CRU define */
+/* CRU_PLL_CON0 */
+#define PB(n)				((0x1 << (15 + 16)) | ((n) << 15))
+#define POSTDIV1(n)			((0x7 << (12 + 16)) | ((n) << 12))
+#define FBDIV(n)			((0xFFF << 16) | (n))
+
+/* CRU_PLL_CON1 */
+#define RSTMODE(n)			((0x1 << (15 + 16)) | ((n) << 15))
+#define RST(n)				((0x1 << (14 + 16)) | ((n) << 14))
+#define PD(n)				((0x1 << (13 + 16)) | ((n) << 13))
+#define DSMPD(n)			((0x1 << (12 + 16)) | ((n) << 12))
+#define LOCK(n)				(((n) >> 10) & 0x1)
+#define POSTDIV2(n)			((0x7 << (6 + 16)) | ((n) << 6))
+#define REFDIV(n)			((0x3F << 16) | (n))
+
+/* CRU_MODE */
+#define CLOCK_FROM_XIN_OSC		(0)
+#define CLOCK_FROM_PLL			(1)
+#define CLOCK_FROM_RTC_32K		(2)
+#define DPLL_MODE(n)			((0x3 << (4 + 16)) | ((n) << 4))
+
+/* CRU_SOFTRESET_CON1 */
+#define upctl2_psrstn_req(n)		(((0x1 << 6) << 16) | ((n) << 6))
+#define upctl2_asrstn_req(n)		(((0x1 << 5) << 16) | ((n) << 5))
+#define upctl2_srstn_req(n)		(((0x1 << 4) << 16) | ((n) << 4))
+
+/* CRU_SOFTRESET_CON2 */
+#define ddrphy_psrstn_req(n)		(((0x1 << 2) << 16) | ((n) << 2))
+#define ddrphy_srstn_req(n)		(((0x1 << 0) << 16) | ((n) << 0))
+
+/* CRU register */
+#define CRU_PLL_CON(pll_id, n)		((pll_id)  * 0x20 + (n) * 4)
+#define CRU_MODE			(0xa0)
+#define CRU_GLB_CNT_TH			(0xb0)
+#define CRU_CLKSEL_CON_BASE		0x100
+#define CRU_CLKSELS_CON(i)		(CRU_CLKSEL_CON_BASE + ((i) * 4))
+#define CRU_CLKGATE_CON_BASE		0x200
+#define CRU_CLKGATE_CON(i)		(CRU_CLKGATE_CON_BASE + ((i) * 4))
+#define CRU_CLKSFTRST_CON_BASE		0x300
+#define CRU_CLKSFTRST_CON(i)		(CRU_CLKSFTRST_CON_BASE + ((i) * 4))
+
+u8 ddr_cfg_2_rbc[] = {
+	/*
+	 * [6:4] max row: 13+n
+	 * [3]  bank(0:4bank,1:8bank)
+	 * [2:0]    col(10+n)
+	 */
+	((5 << 4) | (1 << 3) | 0), /* 0 */
+	((5 << 4) | (1 << 3) | 1), /* 1 */
+	((4 << 4) | (1 << 3) | 2), /* 2 */
+	((3 << 4) | (1 << 3) | 3), /* 3 */
+	((2 << 4) | (1 << 3) | 4), /* 4 */
+	((5 << 4) | (0 << 3) | 2), /* 5 */
+	((4 << 4) | (1 << 3) | 2), /* 6 */
+	/*((0<<3)|3),*/	 /* 12 for ddr4 */
+	/*((1<<3)|1),*/  /* 13 B,C exchange for rkvdec */
+};
+
+/*
+ * for ddr4 if ddrconfig=7, upctl should set 7 and noc should
+ * set to 1 for more efficient.
+ * noc ddrconf, upctl addrmap
+ * 1  7
+ * 2  8
+ * 3  9
+ * 12 10
+ * 5  11
+ */
+u8 d4_rbc_2_d3_rbc[] = {
+	1, /* 7 */
+	2, /* 8 */
+	3, /* 9 */
+	12, /* 10 */
+	5, /* 11 */
+};
+
+/*
+ * row higher than cs should be disabled by set to 0xf
+ * rank addrmap calculate by real cap.
+ */
+u32 addrmap[][8] = {
+	/* map0 map1,   map2,       map3,       map4,      map5
+	 * map6,        map7,       map8
+	 * -------------------------------------------------------
+	 * bk2-0       col 5-2     col 9-6    col 11-10   row 11-0
+	 * row 15-12   row 17-16   bg1,0
+	 * -------------------------------------------------------
+	 * 4,3,2       5-2         9-6                    6
+	 *                         3,2
+	 */
+	{0x00060606, 0x00000000, 0x1f1f0000, 0x00001f1f, 0x05050505,
+		0x05050505, 0x00000505, 0x3f3f}, /* 0 */
+	{0x00070707, 0x00000000, 0x1f000000, 0x00001f1f, 0x06060606,
+		0x06060606, 0x06060606, 0x3f3f}, /* 1 */
+	{0x00080808, 0x00000000, 0x00000000, 0x00001f1f, 0x07070707,
+		0x07070707, 0x00000f07, 0x3f3f}, /* 2 */
+	{0x00090909, 0x00000000, 0x00000000, 0x00001f00, 0x08080808,
+		0x08080808, 0x00000f0f, 0x3f3f}, /* 3 */
+	{0x000a0a0a, 0x00000000, 0x00000000, 0x00000000, 0x09090909,
+		0x0f090909, 0x00000f0f, 0x3f3f}, /* 4 */
+	{0x00080808, 0x00000000, 0x00000000, 0x00001f1f, 0x06060606,
+		0x06060606, 0x00000606, 0x3f3f}, /* 5 */
+	{0x00080808, 0x00000000, 0x00000000, 0x00001f1f, 0x07070707,
+		0x07070707, 0x00000f0f, 0x3f3f}, /* 6 */
+	{0x003f0808, 0x00000006, 0x1f1f0000, 0x00001f1f, 0x06060606,
+		0x06060606, 0x00000606, 0x0600}, /* 7 */
+	{0x003f0909, 0x00000007, 0x1f000000, 0x00001f1f, 0x07070707,
+		0x07070707, 0x00000f07, 0x0700}, /* 8 */
+	{0x003f0a0a, 0x01010100, 0x01010101, 0x00001f1f, 0x08080808,
+		0x08080808, 0x00000f0f, 0x0801}, /* 9 */
+	{0x003f0909, 0x01010100, 0x01010101, 0x00001f1f, 0x07070707,
+		0x07070707, 0x00000f07, 0x3f01}, /* 10 */
+	{0x003f0808, 0x00000007, 0x1f000000, 0x00001f1f, 0x06060606,
+		0x06060606, 0x00000606, 0x3f00}, /* 11 */
+	/* when ddr4 12 map to 10, when ddr3 12 unused */
+	{0x003f0909, 0x01010100, 0x01010101, 0x00001f1f, 0x07070707,
+		0x07070707, 0x00000f07, 0x3f01}, /* 10 */
+	{0x00070706, 0x00000000, 0x1f010000, 0x00001f1f, 0x06060606,
+		0x06060606, 0x00000606, 0x3f3f}, /* 13 */
+};
+
+struct px30_ddr_grf_regs {
+	u32 ddr_grf_con[4];
+	u32 reserved1[(0x20 - 0x10) / 4];
+	u32 ddr_grf_lp_con;
+	u32 reserved2[(0x100 - 0x24) / 4];
+	u32 ddr_grf_status[11];
+};
+
+struct msch_regs {
+	u32 coreid;
+	u32 revisionid;
+	u32 deviceconf;
+	u32 devicesize;
+	u32 ddrtiminga0;
+	u32 ddrtimingb0;
+	u32 ddrtimingc0;
+	u32 devtodev0;
+	u32 reserved1[(0x110 - 0x20) / 4];
+	u32 ddrmode;
+	u32 ddr4timing;
+	u32 reserved2[(0x1000 - 0x118) / 4];
+	u32 agingx0;
+	u32 reserved3[(0x1040 - 0x1004) / 4];
+	u32 aging0;
+	u32 aging1;
+	u32 aging2;
+	u32 aging3;
+};
+
+struct sdram_msch_timings {
+	union noc_ddrtiminga0 ddrtiminga0;
+	union noc_ddrtimingb0 ddrtimingb0;
+	union noc_ddrtimingc0 ddrtimingc0;
+	union noc_devtodev0 devtodev0;
+	union noc_ddrmode ddrmode;
+	union noc_ddr4timing ddr4timing;
+	u32 agingx0;
+};
+
+struct px30_sdram_channel {
+	struct sdram_cap_info cap_info;
+	struct sdram_msch_timings noc_timings;
+};
+
+struct px30_sdram_params {
+	struct px30_sdram_channel ch;
+	struct sdram_base_params base;
+	struct ddr_pctl_regs pctl_regs;
+	struct ddr_phy_regs phy_regs;
+	struct ddr_phy_skew *skew;
+};
+#endif
diff --git a/drivers/ram/rockchip/sdram-px30-ddr3-detect-333.inc b/drivers/ram/rockchip/sdram-px30-ddr3-detect-333.inc
new file mode 100644
index 0000000000..76cd8dc1a5
--- /dev/null
+++ b/drivers/ram/rockchip/sdram-px30-ddr3-detect-333.inc
@@ -0,0 +1,72 @@
+{
+	{
+		{
+			.rank = 0x1,
+			.col = 0xC,
+			.bk = 0x3,
+			.bw = 0x1,
+			.dbw = 0x0,
+			.row_3_4 = 0x0,
+			.cs0_row = 0x10,
+			.cs1_row = 0x10,
+			.cs0_high16bit_row = 0x10,
+			.cs1_high16bit_row = 0x10,
+			.ddrconfig = 0,
+		},
+		{
+			{0x290b0609},
+			{0x08020401},
+			{0x00000002},
+			{0x00001111},
+			{0x0000000c},
+			{0x00000222},
+			0x000000ff
+		}
+	},
+	{
+		.ddr_freq = 333,
+		.dramtype = DDR3,
+		.num_channels = 1,
+		.stride = 0,
+		.odt = 0,
+	},
+	{
+		{
+			{0x00000000, 0x43041001},	/* MSTR */
+			{0x00000064, 0x0028003b},	/* RFSHTMG */
+			{0x000000d0, 0x00020053},	/* INIT0 */
+			{0x000000d4, 0x00020000},	/* INIT1 */
+			{0x000000d8, 0x00000100},	/* INIT2 */
+			{0x000000dc, 0x03200000},	/* INIT3 */
+			{0x000000e0, 0x00000000},	/* INIT4 */
+			{0x000000e4, 0x00090000},	/* INIT5 */
+			{0x000000f4, 0x000f012f},	/* RANKCTL */
+			{0x00000100, 0x07090b06},	/* DRAMTMG0 */
+			{0x00000104, 0x00050209},	/* DRAMTMG1 */
+			{0x00000108, 0x03030407},	/* DRAMTMG2 */
+			{0x0000010c, 0x00202006},	/* DRAMTMG3 */
+			{0x00000110, 0x03020204},	/* DRAMTMG4 */
+			{0x00000114, 0x03030202},	/* DRAMTMG5 */
+			{0x00000120, 0x00000903},	/* DRAMTMG8 */
+			{0x00000180, 0x00800020},	/* ZQCTL0 */
+			{0x00000184, 0x00000000},	/* ZQCTL1 */
+			{0x00000190, 0x07010001},	/* DFITMG0 */
+			{0x00000198, 0x07000101},	/* DFILPCFG0 */
+			{0x000001a0, 0xc0400003},	/* DFIUPD0 */
+			{0x00000240, 0x06000604},	/* ODTCFG */
+			{0x00000244, 0x00000201},	/* ODTMAP */
+			{0x00000250, 0x00001f00},	/* SCHED */
+			{0x00000490, 0x00000001},	/* PCTRL_0 */
+			{0xffffffff, 0xffffffff}
+		}
+	},
+	{
+		{
+			{0x00000004, 0x0000000a},	/* PHYREG01 */
+			{0x00000028, 0x00000006},	/* PHYREG0A */
+			{0x0000002c, 0x00000000},	/* PHYREG0B */
+			{0x00000030, 0x00000005},	/* PHYREG0C */
+			{0xffffffff, 0xffffffff}
+		}
+	}
+},
diff --git a/drivers/ram/rockchip/sdram-px30-ddr4-detect-333.inc b/drivers/ram/rockchip/sdram-px30-ddr4-detect-333.inc
new file mode 100644
index 0000000000..f804d28393
--- /dev/null
+++ b/drivers/ram/rockchip/sdram-px30-ddr4-detect-333.inc
@@ -0,0 +1,75 @@
+{
+	{
+		{
+			.rank = 0x1,
+			.col = 0xA,
+			.bk = 0x2,
+			.bw = 0x1,
+			.dbw = 0x0,
+			.row_3_4 = 0x0,
+			.cs0_row = 0x11,
+			.cs1_row = 0x0,
+			.cs0_high16bit_row = 0x11,
+			.cs1_high16bit_row = 0x0,
+			.ddrconfig = 0,
+		},
+		{
+			{0x4d110a08},
+			{0x06020501},
+			{0x00000002},
+			{0x00001111},
+			{0x0000000c},
+			{0x0000022a},
+			0x000000ff
+		}
+	},
+	{
+		.ddr_freq = 333,
+		.dramtype = DDR4,
+		.num_channels = 1,
+		.stride = 0,
+		.odt = 0,
+	},
+	{
+		{
+			{0x00000000, 0x43049010},	/* MSTR */
+			{0x00000064, 0x0028003b},	/* RFSHTMG */
+			{0x000000d0, 0x00020053},	/* INIT0 */
+			{0x000000d4, 0x00220000},	/* INIT1 */
+			{0x000000d8, 0x00000100},	/* INIT2 */
+			{0x000000dc, 0x00040000},	/* INIT3 */
+			{0x000000e0, 0x00000000},	/* INIT4 */
+			{0x000000e4, 0x00110000},	/* INIT5 */
+			{0x000000e8, 0x00000420},	/* INIT6 */
+			{0x000000ec, 0x00000400},	/* INIT7 */
+			{0x000000f4, 0x000f012f},	/* RANKCTL */
+			{0x00000100, 0x09060b06},	/* DRAMTMG0 */
+			{0x00000104, 0x00020209},	/* DRAMTMG1 */
+			{0x00000108, 0x0505040a},	/* DRAMTMG2 */
+			{0x0000010c, 0x0040400c},	/* DRAMTMG3 */
+			{0x00000110, 0x05030206},	/* DRAMTMG4 */
+			{0x00000114, 0x03030202},	/* DRAMTMG5 */
+			{0x00000120, 0x03030b03},	/* DRAMTMG8 */
+			{0x00000124, 0x00020208},	/* DRAMTMG9 */
+			{0x00000180, 0x01000040},	/* ZQCTL0 */
+			{0x00000184, 0x00000000},	/* ZQCTL1 */
+			{0x00000190, 0x07030003},	/* DFITMG0 */
+			{0x00000198, 0x07000101},	/* DFILPCFG0 */
+			{0x000001a0, 0xc0400003},	/* DFIUPD0 */
+			{0x00000240, 0x06000604},	/* ODTCFG */
+			{0x00000244, 0x00000201},	/* ODTMAP */
+			{0x00000250, 0x00001f00},	/* SCHED */
+			{0x00000490, 0x00000001},	/* PCTRL_0 */
+			{0xffffffff, 0xffffffff}
+		}
+	},
+	{
+		{
+			{0x00000004, 0x0000000c},	/* PHYREG01 */
+			{0x00000028, 0x0000000a},	/* PHYREG0A */
+			{0x0000002c, 0x00000000},	/* PHYREG0B */
+			{0x00000030, 0x00000009},	/* PHYREG0C */
+			{0xffffffff, 0xffffffff}
+		}
+	}
+},
\ No newline at end of file
diff --git a/drivers/ram/rockchip/sdram-px30-ddr_skew.inc b/drivers/ram/rockchip/sdram-px30-ddr_skew.inc
new file mode 100644
index 0000000000..f24343dda1
--- /dev/null
+++ b/drivers/ram/rockchip/sdram-px30-ddr_skew.inc
@@ -0,0 +1,121 @@
+		{
+			0x77,
+			0x88,
+			0x79,
+			0x79,
+			0x87,
+			0x97,
+			0x87,
+			0x78,
+			0x77,
+			0x78,
+			0x87,
+			0x88,
+			0x87,
+			0x87,
+			0x77
+		},
+		{
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x69,
+			0x9,
+		},
+		{
+			0x77,
+			0x78,
+			0x77,
+			0x78,
+			0x77,
+			0x78,
+			0x77,
+			0x78,
+			0x77,
+			0x79,
+			0x9,
+		},
+		{
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x69,
+			0x9,
+		},
+		{
+			0x77,
+			0x78,
+			0x77,
+			0x77,
+			0x77,
+			0x77,
+			0x77,
+			0x77,
+			0x77,
+			0x79,
+			0x9,
+		},
+		{
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x69,
+			0x9,
+		},
+		{
+			0x77,
+			0x78,
+			0x77,
+			0x78,
+			0x77,
+			0x78,
+			0x77,
+			0x78,
+			0x77,
+			0x79,
+			0x9,
+		},
+		{
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x78,
+			0x69,
+			0x9,
+		},
+		{
+			0x77,
+			0x78,
+			0x77,
+			0x77,
+			0x77,
+			0x77,
+			0x77,
+			0x77,
+			0x77,
+			0x79,
+			0x9,
+		}
diff --git a/drivers/ram/rockchip/sdram-px30-lpddr2-detect-333.inc b/drivers/ram/rockchip/sdram-px30-lpddr2-detect-333.inc
new file mode 100644
index 0000000000..948ade483b
--- /dev/null
+++ b/drivers/ram/rockchip/sdram-px30-lpddr2-detect-333.inc
@@ -0,0 +1,73 @@
+{
+	{
+		{
+			.rank = 0x1,
+			.col = 0xC,
+			.bk = 0x3,
+			.bw = 0x1,
+			.dbw = 0x0,
+			.row_3_4 = 0x0,
+			.cs0_row = 0xF,
+			.cs1_row = 0xF,
+			.cs0_high16bit_row = 0xF,
+			.cs1_high16bit_row = 0xF,
+			.ddrconfig = 0,
+		},
+		{
+			{0x2b0c070a},
+			{0x08020303},
+			{0x00000002},
+			{0x00001111},
+			{0x0000000c},
+			{0x00000219},
+			0x000000ff
+		}
+	},
+	{
+		.ddr_freq = 333,
+		.dramtype = LPDDR2,
+		.num_channels = 1,
+		.stride = 0,
+		.odt = 0,
+	},
+	{
+		{
+			{0x00000000, 0x41041004},	/* MSTR */
+			{0x00000064, 0x00140023},	/* RFSHTMG */
+			{0x000000d0, 0x00220002},	/* INIT0 */
+			{0x000000d4, 0x00010000},	/* INIT1 */
+			{0x000000d8, 0x00000703},	/* INIT2 */
+			{0x000000dc, 0x00630005},	/* INIT3 */
+			{0x000000e0, 0x00010000},	/* INIT4 */
+			{0x000000e4, 0x00070003},	/* INIT5 */
+			{0x000000f4, 0x000f012f},	/* RANKCTL */
+			{0x00000100, 0x07090b07},	/* DRAMTMG0 */
+			{0x00000104, 0x0002010b},	/* DRAMTMG1 */
+			{0x00000108, 0x02040506},	/* DRAMTMG2 */
+			{0x0000010c, 0x00303000},	/* DRAMTMG3 */
+			{0x00000110, 0x04010204},	/* DRAMTMG4 */
+			{0x00000114, 0x01010303},	/* DRAMTMG5 */
+			{0x00000118, 0x02020003},	/* DRAMTMG6 */
+			{0x00000120, 0x00000303},	/* DRAMTMG8 */
+			{0x00000138, 0x00000025},	/* DRAMTMG14 */
+			{0x00000180, 0x003c000f},	/* ZQCTL0 */
+			{0x00000184, 0x00900000},	/* ZQCTL1 */
+			{0x00000190, 0x07020001},	/* DFITMG0 */
+			{0x00000198, 0x07000101},	/* DFILPCFG0 */
+			{0x000001a0, 0xc0400003},	/* DFIUPD0 */
+			{0x00000240, 0x07030718},	/* ODTCFG */
+			{0x00000250, 0x00001f00},	/* SCHED */
+			{0x00000490, 0x00000001},	/* PCTRL_0 */
+			{0xffffffff, 0xffffffff}
+		}
+	},
+	{
+		{
+			{0x00000004, 0x00000009},	/* PHYREG01 */
+			{0x00000028, 0x00000007},	/* PHYREG0A */
+			{0x0000002c, 0x00000000},	/* PHYREG0B */
+			{0x00000030, 0x00000004},	/* PHYREG0C */
+			{0xffffffff, 0xffffffff}
+		}
+	}
+},
diff --git a/drivers/ram/rockchip/sdram-px30-lpddr3-detect-333.inc b/drivers/ram/rockchip/sdram-px30-lpddr3-detect-333.inc
new file mode 100644
index 0000000000..f694a0e5b0
--- /dev/null
+++ b/drivers/ram/rockchip/sdram-px30-lpddr3-detect-333.inc
@@ -0,0 +1,74 @@
+{
+	{
+		{
+			.rank = 0x1,
+			.col = 0xC,
+			.bk = 0x3,
+			.bw = 0x1,
+			.dbw = 0x0,
+			.row_3_4 = 0x0,
+			.cs0_row = 0x10,
+			.cs1_row = 0x10,
+			.cs0_high16bit_row = 0x10,
+			.cs1_high16bit_row = 0x10,
+			.ddrconfig = 0,
+		},
+		{
+			{0x290a060a},
+			{0x08020303},
+			{0x00000002},
+			{0x00001111},
+			{0x0000000c},
+			{0x0000021a},
+			0x000000ff
+		}
+	},
+	{
+		.ddr_freq = 333,
+		.dramtype = LPDDR3,
+		.num_channels = 1,
+		.stride = 0,
+		.odt = 0,
+	},
+	{
+		{
+			{0x00000000, 0x43041008},	/* MSTR */
+			{0x00000064, 0x00140023},	/* RFSHTMG */
+			{0x000000d0, 0x00220002},	/* INIT0 */
+			{0x000000d4, 0x00010000},	/* INIT1 */
+			{0x000000d8, 0x00000703},	/* INIT2 */
+			{0x000000dc, 0x00830004},	/* INIT3 */
+			{0x000000e0, 0x00010000},	/* INIT4 */
+			{0x000000e4, 0x00070003},	/* INIT5 */
+			{0x000000f4, 0x000f012f},	/* RANKCTL */
+			{0x00000100, 0x06090b07},	/* DRAMTMG0 */
+			{0x00000104, 0x0002020b},	/* DRAMTMG1 */
+			{0x00000108, 0x02030506},	/* DRAMTMG2 */
+			{0x0000010c, 0x00505000},	/* DRAMTMG3 */
+			{0x00000110, 0x03020204},	/* DRAMTMG4 */
+			{0x00000114, 0x01010303},	/* DRAMTMG5 */
+			{0x00000118, 0x02020003},	/* DRAMTMG6 */
+			{0x00000120, 0x00000303},	/* DRAMTMG8 */
+			{0x00000138, 0x00000025},	/* DRAMTMG14 */
+			{0x00000180, 0x003c000f},	/* ZQCTL0 */
+			{0x00000184, 0x00900000},	/* ZQCTL1 */
+			{0x00000190, 0x07020000},	/* DFITMG0 */
+			{0x00000198, 0x07000101},	/* DFILPCFG0 */
+			{0x000001a0, 0xc0400003},	/* DFIUPD0 */
+			{0x00000240, 0x0900090c},	/* ODTCFG */
+			{0x00000244, 0x00000101},	/* ODTMAP */
+			{0x00000250, 0x00001f00},	/* SCHED */
+			{0x00000490, 0x00000001},	/* PCTRL_0 */
+			{0xffffffff, 0xffffffff}
+		}
+	},
+	{
+		{
+			{0x00000004, 0x0000000b},	/* PHYREG01 */
+			{0x00000028, 0x00000006},	/* PHYREG0A */
+			{0x0000002c, 0x00000000},	/* PHYREG0B */
+			{0x00000030, 0x00000003},	/* PHYREG0C */
+			{0xffffffff, 0xffffffff}
+		}
+	}
+},
diff --git a/drivers/ram/rockchip/sdram_px30.c b/drivers/ram/rockchip/sdram_px30.c
new file mode 100644
index 0000000000..2f54e47e64
--- /dev/null
+++ b/drivers/ram/rockchip/sdram_px30.c
@@ -0,0 +1,670 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2018 Rockchip Electronics Co., Ltd.
+ */
+
+#include <common.h>
+#include <debug_uart.h>
+#include <dm.h>
+#include <ram.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_px30.h>
+#include <asm/arch-rockchip/grf_px30.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <asm/arch-rockchip/sdram.h>
+#include <asm/arch-rockchip/sdram_px30.h>
+
+/*
+ * Because px30 sram size is small, so need define CONFIG_TPL_TINY_FRAMEWORK
+ * to reduce TPL size when build TPL firmware.
+ */
+#ifdef CONFIG_TPL_BUILD
+#ifndef CONFIG_TPL_TINY_FRAMEWORK
+#error please defined CONFIG_TPL_TINY_FRAMEWORK for px30 !!!
+#endif
+#endif
+
+#ifdef CONFIG_TPL_BUILD
+
+struct dram_info {
+	struct ddr_pctl_regs *pctl;
+	struct ddr_phy_regs *phy;
+	struct px30_cru *cru;
+	struct msch_regs *msch;
+	struct px30_ddr_grf_regs *ddr_grf;
+	struct px30_grf *grf;
+	struct ram_info info;
+	struct px30_pmugrf *pmugrf;
+};
+
+#define PMUGRF_BASE_ADDR		0xFF010000
+#define CRU_BASE_ADDR			0xFF2B0000
+#define GRF_BASE_ADDR			0xFF140000
+#define DDRC_BASE_ADDR			0xFF600000
+#define DDR_PHY_BASE_ADDR		0xFF2A0000
+#define SERVER_MSCH0_BASE_ADDR		0xFF530000
+#define DDR_GRF_BASE_ADDR		0xff630000
+
+struct dram_info dram_info;
+
+struct px30_sdram_params sdram_configs[] = {
+#include	"sdram-px30-ddr3-detect-333.inc"
+};
+
+struct ddr_phy_skew skew = {
+#include	"sdram-px30-ddr_skew.inc"
+};
+
+static void rkclk_ddr_reset(struct dram_info *dram,
+			    u32 ctl_srstn, u32 ctl_psrstn,
+			    u32 phy_srstn, u32 phy_psrstn)
+{
+	writel(upctl2_srstn_req(ctl_srstn) | upctl2_psrstn_req(ctl_psrstn) |
+	       upctl2_asrstn_req(ctl_srstn),
+	       &dram->cru->softrst_con[1]);
+	writel(ddrphy_srstn_req(phy_srstn) | ddrphy_psrstn_req(phy_psrstn),
+	       &dram->cru->softrst_con[2]);
+}
+
+static void rkclk_set_dpll(struct dram_info *dram, unsigned int hz)
+{
+	unsigned int refdiv, postdiv1, postdiv2, fbdiv;
+	int delay = 1000;
+	u32 mhz = hz / MHz;
+
+	refdiv = 1;
+	if (mhz <= 300) {
+		postdiv1 = 4;
+		postdiv2 = 2;
+	} else if (mhz <= 400) {
+		postdiv1 = 6;
+		postdiv2 = 1;
+	} else if (mhz <= 600) {
+		postdiv1 = 4;
+		postdiv2 = 1;
+	} else if (mhz <= 800) {
+		postdiv1 = 3;
+		postdiv2 = 1;
+	} else if (mhz <= 1600) {
+		postdiv1 = 2;
+		postdiv2 = 1;
+	} else {
+		postdiv1 = 1;
+		postdiv2 = 1;
+	}
+	fbdiv = (mhz * refdiv * postdiv1 * postdiv2) / 24;
+
+	writel(DPLL_MODE(CLOCK_FROM_XIN_OSC), &dram->cru->mode);
+
+	writel(POSTDIV1(postdiv1) | FBDIV(fbdiv), &dram->cru->pll[1].con0);
+	writel(DSMPD(1) | POSTDIV2(postdiv2) | REFDIV(refdiv),
+	       &dram->cru->pll[1].con1);
+
+	while (delay > 0) {
+		udelay(1);
+		if (LOCK(readl(&dram->cru->pll[1].con1)))
+			break;
+		delay--;
+	}
+
+	writel(DPLL_MODE(CLOCK_FROM_PLL), &dram->cru->mode);
+}
+
+static void rkclk_configure_ddr(struct dram_info *dram,
+				struct px30_sdram_params *sdram_params)
+{
+	/* for inno ddr phy need 2*freq */
+	rkclk_set_dpll(dram,  sdram_params->base.ddr_freq * MHz * 2);
+}
+
+/* return ddrconfig value
+ *       (-1), find ddrconfig fail
+ *       other, the ddrconfig value
+ * only support cs0_row >= cs1_row
+ */
+static unsigned int calculate_ddrconfig(struct px30_sdram_params *sdram_params)
+{
+	struct sdram_cap_info *cap_info = &sdram_params->ch.cap_info;
+	u32 bw, die_bw, col, bank;
+	u32 i, tmp;
+	u32 ddrconf = -1;
+
+	bw = cap_info->bw;
+	die_bw = cap_info->dbw;
+	col = cap_info->col;
+	bank = cap_info->bk;
+
+	if (sdram_params->base.dramtype == DDR4) {
+		if (die_bw == 0)
+			ddrconf = 7 + bw;
+		else
+			ddrconf = 12 - bw;
+		ddrconf = d4_rbc_2_d3_rbc[ddrconf - 7];
+	} else {
+		tmp = ((bank - 2) << 3) | (col + bw - 10);
+		for (i = 0; i < 7; i++)
+			if ((ddr_cfg_2_rbc[i] & 0xf) == tmp) {
+				ddrconf = i;
+				break;
+			}
+		if (i > 6)
+			printascii("calculate ddrconfig error\n");
+	}
+
+	return ddrconf;
+}
+
+/*
+ * calculate controller dram address map, and setting to register.
+ * argument sdram_params->ch.ddrconf must be right value before
+ * call this function.
+ */
+static void set_ctl_address_map(struct dram_info *dram,
+				struct px30_sdram_params *sdram_params)
+{
+	struct sdram_cap_info *cap_info = &sdram_params->ch.cap_info;
+	void __iomem *pctl_base = dram->pctl;
+	u32 cs_pst, bg, max_row, ddrconf;
+	u32 i;
+
+	if (sdram_params->base.dramtype == DDR4)
+		/*
+		 * DDR4 8bit dram BG = 2(4bank groups),
+		 * 16bit dram BG = 1 (2 bank groups)
+		 */
+		bg = (cap_info->dbw == 0) ? 2 : 1;
+	else
+		bg = 0;
+
+	cs_pst = cap_info->bw + cap_info->col +
+		bg + cap_info->bk + cap_info->cs0_row;
+	if (cs_pst >= 32 || cap_info->rank == 1)
+		writel(0x1f, pctl_base + DDR_PCTL2_ADDRMAP0);
+	else
+		writel(cs_pst - 8, pctl_base + DDR_PCTL2_ADDRMAP0);
+
+	ddrconf = cap_info->ddrconfig;
+	if (sdram_params->base.dramtype == DDR4) {
+		for (i = 0; i < ARRAY_SIZE(d4_rbc_2_d3_rbc); i++) {
+			if (d4_rbc_2_d3_rbc[i] == ddrconf) {
+				ddrconf = 7 + i;
+				break;
+			}
+		}
+	}
+
+	sdram_copy_to_reg((u32 *)(pctl_base + DDR_PCTL2_ADDRMAP1),
+			  &addrmap[ddrconf][0], 8 * 4);
+	max_row = cs_pst - 1 - 8 - (addrmap[ddrconf][5] & 0xf);
+
+	if (max_row < 12)
+		printascii("set addrmap fail\n");
+	/* need to disable row ahead of rank by set to 0xf */
+	for (i = 17; i > max_row; i--)
+		clrsetbits_le32(pctl_base + DDR_PCTL2_ADDRMAP6 +
+			((i - 12) * 8 / 32) * 4,
+			0xf << ((i - 12) * 8 % 32),
+			0xf << ((i - 12) * 8 % 32));
+
+	if ((sdram_params->base.dramtype == LPDDR3 ||
+	     sdram_params->base.dramtype == LPDDR2) &&
+		 cap_info->row_3_4)
+		setbits_le32(pctl_base + DDR_PCTL2_ADDRMAP6, 1 << 31);
+	if (sdram_params->base.dramtype == DDR4 && cap_info->bw != 0x2)
+		setbits_le32(pctl_base + DDR_PCTL2_PCCFG, 1 << 8);
+}
+
+/*
+ * rank = 1: cs0
+ * rank = 2: cs1
+ */
+int read_mr(struct dram_info *dram, u32 rank, u32 mr_num)
+{
+	void __iomem *ddr_grf_base = dram->ddr_grf;
+
+	pctl_read_mr(dram->pctl, rank, mr_num);
+
+	return (readl(ddr_grf_base + DDR_GRF_STATUS(0)) & 0xff);
+}
+
+#define MIN(a, b)	(((a) > (b)) ? (b) : (a))
+#define MAX(a, b)	(((a) > (b)) ? (a) : (b))
+static u32 check_rd_gate(struct dram_info *dram)
+{
+	void __iomem *phy_base = dram->phy;
+
+	u32 max_val = 0;
+	u32 min_val = 0xff;
+	u32 gate[4];
+	u32 i, bw;
+
+	bw = (readl(PHY_REG(phy_base, 0x0)) >> 4) & 0xf;
+	switch (bw) {
+	case 0x1:
+		bw = 1;
+		break;
+	case 0x3:
+		bw = 2;
+		break;
+	case 0xf:
+	default:
+		bw = 4;
+		break;
+	}
+
+	for (i = 0; i < bw; i++) {
+		gate[i] = readl(PHY_REG(phy_base, 0xfb + i));
+		max_val = MAX(max_val, gate[i]);
+		min_val = MIN(min_val, gate[i]);
+	}
+
+	if (max_val > 0x80 || min_val < 0x20)
+		return -1;
+	else
+		return 0;
+}
+
+static int data_training(struct dram_info *dram, u32 cs, u32 dramtype)
+{
+	void __iomem *pctl_base = dram->pctl;
+	u32 dis_auto_zq = 0;
+	u32 pwrctl;
+	u32 ret;
+
+	/* disable auto low-power */
+	pwrctl = readl(pctl_base + DDR_PCTL2_PWRCTL);
+	writel(0, pctl_base + DDR_PCTL2_PWRCTL);
+
+	dis_auto_zq = pctl_dis_zqcs_aref(dram->pctl);
+
+	ret = phy_data_training(dram->phy, cs, dramtype);
+
+	pctl_rest_zqcs_aref(dram->pctl, dis_auto_zq);
+
+	/* restore auto low-power */
+	writel(pwrctl, pctl_base + DDR_PCTL2_PWRCTL);
+
+	return ret;
+}
+
+static void dram_set_bw(struct dram_info *dram, u32 bw)
+{
+	phy_dram_set_bw(dram->phy, bw);
+}
+
+static void set_ddrconfig(struct dram_info *dram, u32 ddrconfig)
+{
+	writel(ddrconfig | (ddrconfig << 8), &dram->msch->deviceconf);
+	rk_clrsetreg(&dram->grf->soc_noc_con[1], 0x3 << 14, 0 << 14);
+}
+
+static void sdram_msch_config(struct msch_regs *msch,
+			      struct sdram_msch_timings *noc_timings,
+			      struct sdram_cap_info *cap_info,
+			      struct sdram_base_params *base)
+{
+	u64 cs_cap[2];
+
+	cs_cap[0] = sdram_get_cs_cap(cap_info, 0, base->dramtype);
+	cs_cap[1] = sdram_get_cs_cap(cap_info, 1, base->dramtype);
+	writel(((((cs_cap[1] >> 20) / 64) & 0xff) << 8) |
+			(((cs_cap[0] >> 20) / 64) & 0xff),
+			&msch->devicesize);
+
+	writel(noc_timings->ddrtiminga0.d32,
+	       &msch->ddrtiminga0);
+	writel(noc_timings->ddrtimingb0.d32,
+	       &msch->ddrtimingb0);
+	writel(noc_timings->ddrtimingc0.d32,
+	       &msch->ddrtimingc0);
+	writel(noc_timings->devtodev0.d32,
+	       &msch->devtodev0);
+	writel(noc_timings->ddrmode.d32, &msch->ddrmode);
+	writel(noc_timings->ddr4timing.d32,
+	       &msch->ddr4timing);
+	writel(noc_timings->agingx0, &msch->agingx0);
+	writel(noc_timings->agingx0, &msch->aging0);
+	writel(noc_timings->agingx0, &msch->aging1);
+	writel(noc_timings->agingx0, &msch->aging2);
+	writel(noc_timings->agingx0, &msch->aging3);
+}
+
+static void dram_all_config(struct dram_info *dram,
+			    struct px30_sdram_params *sdram_params)
+{
+	struct sdram_cap_info *cap_info = &sdram_params->ch.cap_info;
+	u32 sys_reg2 = 0;
+	u32 sys_reg3 = 0;
+
+	set_ddrconfig(dram, cap_info->ddrconfig);
+	sdram_org_config(cap_info, &sdram_params->base, &sys_reg2,
+			 &sys_reg3, 0);
+	writel(sys_reg2, &dram->pmugrf->os_reg[2]);
+	writel(sys_reg3, &dram->pmugrf->os_reg[3]);
+	sdram_msch_config(dram->msch, &sdram_params->ch.noc_timings, cap_info,
+			  &sdram_params->base);
+}
+
+static void enable_low_power(struct dram_info *dram,
+			     struct px30_sdram_params *sdram_params)
+{
+	void __iomem *pctl_base = dram->pctl;
+	void __iomem *phy_base = dram->phy;
+	void __iomem *ddr_grf_base = dram->ddr_grf;
+	u32 grf_lp_con;
+
+	/*
+	 * bit0: grf_upctl_axi_cg_en = 1 enable upctl2 axi clk auto gating
+	 * bit1: grf_upctl_apb_cg_en = 1 ungated axi,core clk for apb access
+	 * bit2: grf_upctl_core_cg_en = 1 enable upctl2 core clk auto gating
+	 * bit3: grf_selfref_type2_en = 0 disable core clk gating when type2 sr
+	 * bit4: grf_upctl_syscreq_cg_en = 1
+	 *       ungating coreclk when c_sysreq assert
+	 * bit8-11: grf_auto_sr_dly = 6
+	 */
+	writel(0x1f1f0617, &dram->ddr_grf->ddr_grf_con[1]);
+
+	if (sdram_params->base.dramtype == DDR4)
+		grf_lp_con = (0x7 << 16) | (1 << 1);
+	else if (sdram_params->base.dramtype == DDR3)
+		grf_lp_con = (0x7 << 16) | (1 << 0);
+	else
+		grf_lp_con = (0x7 << 16) | (1 << 2);
+
+	/* en lpckdis_en */
+	grf_lp_con = grf_lp_con | (0x1 << (9 + 16)) | (0x1 << 9);
+	writel(grf_lp_con, ddr_grf_base + DDR_GRF_LP_CON);
+
+	/* off digit module clock when enter power down */
+	setbits_le32(PHY_REG(phy_base, 7), 1 << 7);
+
+	/* enable sr, pd */
+	if (PD_IDLE == 0)
+		clrbits_le32(pctl_base + DDR_PCTL2_PWRCTL, (1 << 1));
+	else
+		setbits_le32(pctl_base + DDR_PCTL2_PWRCTL, (1 << 1));
+	if (SR_IDLE == 0)
+		clrbits_le32(pctl_base + DDR_PCTL2_PWRCTL, 1);
+	else
+		setbits_le32(pctl_base + DDR_PCTL2_PWRCTL, 1);
+	setbits_le32(pctl_base + DDR_PCTL2_PWRCTL, (1 << 3));
+}
+
+/*
+ * pre_init: 0: pre init for dram cap detect
+ * 1: detect correct cap(except cs1 row)info, than reinit
+ * 2: after reinit, we detect cs1_row, if cs1_row not equal
+ *    to cs0_row and cs is in middle on ddrconf map, we need
+ *    to reinit dram, than set the correct ddrconf.
+ */
+static int sdram_init_(struct dram_info *dram,
+		       struct px30_sdram_params *sdram_params, u32 pre_init)
+{
+	struct sdram_cap_info *cap_info = &sdram_params->ch.cap_info;
+	void __iomem *pctl_base = dram->pctl;
+
+	rkclk_ddr_reset(dram, 1, 1, 1, 1);
+	udelay(10);
+	/*
+	 * dereset ddr phy psrstn to config pll,
+	 * if using phy pll psrstn must be dereset
+	 * before config pll
+	 */
+	rkclk_ddr_reset(dram, 1, 1, 1, 0);
+	rkclk_configure_ddr(dram, sdram_params);
+
+	/* release phy srst to provide clk to ctrl */
+	rkclk_ddr_reset(dram, 1, 1, 0, 0);
+	udelay(10);
+	phy_soft_reset(dram->phy);
+	/* release ctrl presetn, and config ctl registers */
+	rkclk_ddr_reset(dram, 1, 0, 0, 0);
+	pctl_cfg(dram->pctl, &sdram_params->pctl_regs, SR_IDLE, PD_IDLE);
+	cap_info->ddrconfig = calculate_ddrconfig(sdram_params);
+	set_ctl_address_map(dram, sdram_params);
+	phy_cfg(dram->phy, &sdram_params->phy_regs, sdram_params->skew,
+		&sdram_params->base, cap_info->bw);
+
+	/* enable dfi_init_start to init phy after ctl srstn deassert */
+	setbits_le32(pctl_base + DDR_PCTL2_DFIMISC, (1 << 5) | (1 << 4));
+
+	rkclk_ddr_reset(dram, 0, 0, 0, 0);
+	/* wait for dfi_init_done and dram init complete */
+	while ((readl(pctl_base + DDR_PCTL2_STAT) & 0x7) == 0)
+		continue;
+
+	if (sdram_params->base.dramtype == LPDDR3)
+		pctl_write_mr(dram->pctl, 3, 11, 3, LPDDR3);
+
+	/* do ddr gate training */
+redo_cs0_training:
+	if (data_training(dram, 0, sdram_params->base.dramtype) != 0) {
+		if (pre_init != 0)
+			printascii("DTT cs0 error\n");
+		return -1;
+	}
+	if (check_rd_gate(dram)) {
+		printascii("re training cs0");
+		goto redo_cs0_training;
+	}
+
+	if (sdram_params->base.dramtype == LPDDR3) {
+		if ((read_mr(dram, 1, 8) & 0x3) != 0x3)
+			return -1;
+	} else if (sdram_params->base.dramtype == LPDDR2) {
+		if ((read_mr(dram, 1, 8) & 0x3) != 0x0)
+			return -1;
+	}
+	/* for px30: when 2cs, both 2 cs should be training */
+	if (pre_init != 0 && cap_info->rank == 2) {
+redo_cs1_training:
+		if (data_training(dram, 1, sdram_params->base.dramtype) != 0) {
+			printascii("DTT cs1 error\n");
+			return -1;
+		}
+		if (check_rd_gate(dram)) {
+			printascii("re training cs1");
+			goto redo_cs1_training;
+		}
+	}
+
+	if (sdram_params->base.dramtype == DDR4)
+		pctl_write_vrefdq(dram->pctl, 0x3, 5670,
+				  sdram_params->base.dramtype);
+
+	dram_all_config(dram, sdram_params);
+	enable_low_power(dram, sdram_params);
+
+	return 0;
+}
+
+static int dram_detect_cap(struct dram_info *dram,
+			   struct px30_sdram_params *sdram_params,
+			   unsigned char channel)
+{
+	struct sdram_cap_info *cap_info = &sdram_params->ch.cap_info;
+
+	/*
+	 * for ddr3: ddrconf = 3
+	 * for ddr4: ddrconf = 12
+	 * for lpddr3: ddrconf = 3
+	 * default bw = 1
+	 */
+	u32 bk, bktmp;
+	u32 col, coltmp;
+	u32 rowtmp;
+	u32 cs;
+	u32 bw = 1;
+	u32 dram_type = sdram_params->base.dramtype;
+
+	if (dram_type != DDR4) {
+		/* detect col and bk for ddr3/lpddr3 */
+		coltmp = 12;
+		bktmp = 3;
+		if (dram_type == LPDDR2)
+			rowtmp = 15;
+		else
+			rowtmp = 16;
+
+		if (sdram_detect_col(cap_info, coltmp) != 0)
+			goto cap_err;
+		sdram_detect_bank(cap_info, coltmp, bktmp);
+		sdram_detect_dbw(cap_info, dram_type);
+	} else {
+		/* detect bg for ddr4 */
+		coltmp = 10;
+		bktmp = 4;
+		rowtmp = 17;
+
+		col = 10;
+		bk = 2;
+		cap_info->col = col;
+		cap_info->bk = bk;
+		sdram_detect_bg(cap_info, coltmp);
+	}
+
+	/* detect row */
+	if (sdram_detect_row(cap_info, coltmp, bktmp, rowtmp) != 0)
+		goto cap_err;
+
+	/* detect row_3_4 */
+	sdram_detect_row_3_4(cap_info, coltmp, bktmp);
+
+	/* bw and cs detect using data training */
+	if (data_training(dram, 1, dram_type) == 0)
+		cs = 1;
+	else
+		cs = 0;
+	cap_info->rank = cs + 1;
+
+	dram_set_bw(dram, 2);
+	if (data_training(dram, 0, dram_type) == 0)
+		bw = 2;
+	else
+		bw = 1;
+	cap_info->bw = bw;
+
+	cap_info->cs0_high16bit_row = cap_info->cs0_row;
+	if (cs) {
+		cap_info->cs1_row = cap_info->cs0_row;
+		cap_info->cs1_high16bit_row = cap_info->cs0_row;
+	} else {
+		cap_info->cs1_row = 0;
+		cap_info->cs1_high16bit_row = 0;
+	}
+
+	return 0;
+cap_err:
+	return -1;
+}
+
+void get_ddr_param(struct px30_sdram_params *sdram_params,
+		   struct ddr_param *ddr_param)
+{
+	struct sdram_cap_info *cap_info = &sdram_params->ch.cap_info;
+	u32 dram_type = sdram_params->base.dramtype;
+	u64 cs_cap[2];
+
+	cs_cap[0] = sdram_get_cs_cap(cap_info, 0, dram_type);
+	cs_cap[1] = sdram_get_cs_cap(cap_info, 1, dram_type);
+
+	if (cap_info->row_3_4) {
+		cs_cap[0] =  cs_cap[0] * 3 / 4;
+		cs_cap[1] =  cs_cap[1] * 3 / 4;
+	}
+
+	if (cap_info->row_3_4 && cap_info->rank == 2) {
+		ddr_param->count = 2;
+		ddr_param->para[0] = 0;
+		ddr_param->para[1] = cs_cap[0] * 4 / 3;
+		ddr_param->para[2] = cs_cap[0];
+		ddr_param->para[3] = cs_cap[1];
+	} else {
+		ddr_param->count = 1;
+		ddr_param->para[0] = 0;
+		ddr_param->para[1] = (u64)cs_cap[0] + (u64)cs_cap[1];
+	}
+}
+
+/* return: 0 = success, other = fail */
+static int sdram_init_detect(struct dram_info *dram,
+			     struct px30_sdram_params *sdram_params)
+{
+	struct sdram_cap_info *cap_info = &sdram_params->ch.cap_info;
+	u32 ret;
+	u32 sys_reg = 0;
+	u32 sys_reg3 = 0;
+
+	if (sdram_init_(dram, sdram_params, 0) != 0)
+		return -1;
+
+	if (dram_detect_cap(dram, sdram_params, 0) != 0)
+		return -1;
+
+	/* modify bw, cs related timing */
+	pctl_remodify_sdram_params(&sdram_params->pctl_regs, cap_info,
+				   sdram_params->base.dramtype);
+	/* reinit sdram by real dram cap */
+	ret = sdram_init_(dram, sdram_params, 1);
+	if (ret != 0)
+		goto out;
+
+	/* redetect cs1 row */
+	sdram_detect_cs1_row(cap_info, sdram_params->base.dramtype);
+	if (cap_info->cs1_row) {
+		sys_reg = readl(&dram->pmugrf->os_reg[2]);
+		sys_reg3 = readl(&dram->pmugrf->os_reg[3]);
+		SYS_REG_ENC_CS1_ROW(cap_info->cs1_row,
+				    sys_reg, sys_reg3, 0);
+		writel(sys_reg, &dram->pmugrf->os_reg[2]);
+		writel(sys_reg3, &dram->pmugrf->os_reg[3]);
+	}
+
+	ret = sdram_detect_high_row(cap_info);
+
+out:
+	return ret;
+}
+
+struct px30_sdram_params
+		*get_default_sdram_config(void)
+{
+	sdram_configs[0].skew = &skew;
+
+	return &sdram_configs[0];
+}
+
+/* return: 0 = success, other = fail */
+int sdram_init(void)
+{
+	struct px30_sdram_params *sdram_params;
+	int ret = 0;
+	struct ddr_param ddr_param;
+
+	dram_info.phy = (void *)DDR_PHY_BASE_ADDR;
+	dram_info.pctl = (void *)DDRC_BASE_ADDR;
+	dram_info.grf = (void *)GRF_BASE_ADDR;
+	dram_info.cru = (void *)CRU_BASE_ADDR;
+	dram_info.msch = (void *)SERVER_MSCH0_BASE_ADDR;
+	dram_info.ddr_grf = (void *)DDR_GRF_BASE_ADDR;
+	dram_info.pmugrf = (void *)PMUGRF_BASE_ADDR;
+
+	sdram_params = get_default_sdram_config();
+	ret = sdram_init_detect(&dram_info, sdram_params);
+
+	if (ret)
+		goto error;
+
+	get_ddr_param(sdram_params, &ddr_param);
+	rockchip_setup_ddr_param(&ddr_param);
+	sdram_print_ddr_info(&sdram_params->ch.cap_info,
+			     &sdram_params->base, 0);
+
+	printascii("out\n");
+	return ret;
+error:
+	return (-1);
+}
+#endif /* CONFIG_TPL_BUILD */
