arch/arm/mach-omap2/omap4/sdram_elpida.c - filogic/uboot - Gitiles

 /*
  * Timing and Organization details of the Elpida parts used in OMAP4
  * SDPs and Panda
  *
  * (C) Copyright 2010
  * Texas Instruments, <www.ti.com>
  *
  * Aneesh V <aneesh@ti.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <asm/emif.h>
 #include <asm/arch/sys_proto.h>

 /*
  * This file provides details of the LPDDR2 SDRAM parts used on OMAP4430
  * SDP and Panda. Since the parts used and geometry are identical for
  * SDP and Panda for a given OMAP4 revision, this information is kept
  * here instead of being in board directory. However the key functions
  * exported are weakly linked so that they can be over-ridden in the board
  * directory if there is a OMAP4 board in the future that uses a different
  * memory device or geometry.
  *
  * For any new board with different memory devices over-ride one or more
  * of the following functions as per the CONFIG flags you intend to enable:
  * - emif_get_reg_dump()
  * - emif_get_dmm_regs()
  * - emif_get_device_details()
  * - emif_get_device_timings()
  */

 #ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS

 const struct emif_regs emif_regs_elpida_200_mhz_2cs = {
 	.sdram_config_init		= 0x80000eb9,
 	.sdram_config			= 0x80001ab9,
 	.ref_ctrl			= 0x0000030c,
 	.sdram_tim1			= 0x08648311,
 	.sdram_tim2			= 0x101b06ca,
 	.sdram_tim3			= 0x0048a19f,
 	.read_idle_ctrl			= 0x000501ff,
 	.zq_config			= 0x500b3214,
 	.temp_alert_config		= 0xd8016893,
 	.emif_ddr_phy_ctlr_1_init	= 0x049ffff5,
 	.emif_ddr_phy_ctlr_1		= 0x049ff808
 };

 const struct emif_regs emif_regs_elpida_380_mhz_1cs = {
 	.sdram_config_init		= 0x80000eb1,
 	.sdram_config			= 0x80001ab1,
 	.ref_ctrl			= 0x000005cd,
 	.sdram_tim1			= 0x10cb0622,
 	.sdram_tim2			= 0x20350d52,
 	.sdram_tim3			= 0x00b1431f,
 	.read_idle_ctrl			= 0x000501ff,
 	.zq_config			= 0x500b3214,
 	.temp_alert_config		= 0x58016893,
 	.emif_ddr_phy_ctlr_1_init	= 0x049ffff5,
 	.emif_ddr_phy_ctlr_1		= 0x049ff418
 };

 const struct emif_regs emif_regs_elpida_400_mhz_1cs = {
 	.sdram_config_init		= 0x80800eb2,
 	.sdram_config			= 0x80801ab2,
 	.ref_ctrl			= 0x00000618,
 	.sdram_tim1			= 0x10eb0662,
 	.sdram_tim2			= 0x20370dd2,
 	.sdram_tim3			= 0x00b1c33f,
 	.read_idle_ctrl			= 0x000501ff,
 	.zq_config			= 0x500b3215,
 	.temp_alert_config		= 0x58016893,
 	.emif_ddr_phy_ctlr_1_init	= 0x049ffff5,
 	.emif_ddr_phy_ctlr_1		= 0x049ff418
 };

 const struct emif_regs emif_regs_elpida_400_mhz_2cs = {
 	.sdram_config_init		= 0x80000eb9,
 	.sdram_config			= 0x80001ab9,
 	.ref_ctrl			= 0x00000618,
 	.sdram_tim1			= 0x10eb0662,
 	.sdram_tim2			= 0x20370dd2,
 	.sdram_tim3			= 0x00b1c33f,
 	.read_idle_ctrl			= 0x000501ff,
 	.zq_config			= 0xd00b3214,
 	.temp_alert_config		= 0xd8016893,
 	.emif_ddr_phy_ctlr_1_init	= 0x049ffff5,
 	.emif_ddr_phy_ctlr_1		= 0x049ff418
 };

 const struct dmm_lisa_map_regs lisa_map_2G_x_1_x_2 = {
 	.dmm_lisa_map_0 = 0xFF020100,
 	.dmm_lisa_map_1 = 0,
 	.dmm_lisa_map_2 = 0,
 	.dmm_lisa_map_3 = 0x80540300,
 	.is_ma_present	= 0x0
 };

 const struct dmm_lisa_map_regs lisa_map_2G_x_2_x_2 = {
 	.dmm_lisa_map_0 = 0xFF020100,
 	.dmm_lisa_map_1 = 0,
 	.dmm_lisa_map_2 = 0,
 	.dmm_lisa_map_3 = 0x80640300,
 	.is_ma_present	= 0x0
 };

 const struct dmm_lisa_map_regs ma_lisa_map_2G_x_2_x_2 = {
 	.dmm_lisa_map_0 = 0xFF020100,
 	.dmm_lisa_map_1 = 0,
 	.dmm_lisa_map_2 = 0,
 	.dmm_lisa_map_3 = 0x80640300,
 	.is_ma_present	= 0x1
 };

 static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
 {
 	u32 omap4_rev = omap_revision();

 	/* Same devices and geometry on both EMIFs */
 	if (omap4_rev == OMAP4430_ES1_0)
 		*regs = &emif_regs_elpida_380_mhz_1cs;
 	else if (omap4_rev == OMAP4430_ES2_0)
 		*regs = &emif_regs_elpida_200_mhz_2cs;
 	else if (omap4_rev < OMAP4470_ES1_0)
 		*regs = &emif_regs_elpida_400_mhz_2cs;
 	else
 		*regs = &emif_regs_elpida_400_mhz_1cs;
 }
 void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
 	__attribute__((weak, alias("emif_get_reg_dump_sdp")));

 static void emif_get_dmm_regs_sdp(const struct dmm_lisa_map_regs
 						**dmm_lisa_regs)
 {
 	u32 omap_rev = omap_revision();

 	if (omap_rev == OMAP4430_ES1_0)
 		*dmm_lisa_regs = &lisa_map_2G_x_1_x_2;
 	else if (omap_rev < OMAP4460_ES1_0)
 		*dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
 	else
 		*dmm_lisa_regs = &ma_lisa_map_2G_x_2_x_2;
 }

 void emif_get_dmm_regs(const struct dmm_lisa_map_regs **dmm_lisa_regs)
 	__attribute__((weak, alias("emif_get_dmm_regs_sdp")));

 #else

 const struct lpddr2_device_details elpida_2G_S4_details = {
 	.type		= LPDDR2_TYPE_S4,
 	.density	= LPDDR2_DENSITY_2Gb,
 	.io_width	= LPDDR2_IO_WIDTH_32,
 	.manufacturer	= LPDDR2_MANUFACTURER_ELPIDA
 };

 const struct lpddr2_device_details elpida_4G_S4_details = {
 	.type		= LPDDR2_TYPE_S4,
 	.density	= LPDDR2_DENSITY_4Gb,
 	.io_width	= LPDDR2_IO_WIDTH_32,
 	.manufacturer	= LPDDR2_MANUFACTURER_ELPIDA
 };

 struct lpddr2_device_details *emif_get_device_details_sdp(u32 emif_nr, u8 cs,
 			struct lpddr2_device_details *lpddr2_dev_details)
 {
 	u32 omap_rev = omap_revision();

 	/* EMIF1 & EMIF2 have identical configuration */
 	if (((omap_rev == OMAP4430_ES1_0) || (omap_rev == OMAP4470_ES1_0))
 		&& (cs == CS1)) {
 		/* Nothing connected on CS1 for 4430/4470 ES1.0 */
 		return NULL;
 	} else if (omap_rev < OMAP4470_ES1_0) {
 		/* In all other 4430/4460 cases Elpida 2G device */
 		*lpddr2_dev_details = elpida_2G_S4_details;
 	} else {
 		/* 4470: 4G device */
 		*lpddr2_dev_details = elpida_4G_S4_details;
 	}
 	return lpddr2_dev_details;
 }

 struct lpddr2_device_details *emif_get_device_details(u32 emif_nr, u8 cs,
 			struct lpddr2_device_details *lpddr2_dev_details)
 	__attribute__((weak, alias("emif_get_device_details_sdp")));

 #endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */

 #ifndef CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
 static const struct lpddr2_ac_timings timings_elpida_400_mhz = {
 	.max_freq	= 400000000,
 	.RL		= 6,
 	.tRPab		= 21,
 	.tRCD		= 18,
 	.tWR		= 15,
 	.tRASmin	= 42,
 	.tRRD		= 10,
 	.tWTRx2		= 15,
 	.tXSR		= 140,
 	.tXPx2		= 15,
 	.tRFCab		= 130,
 	.tRTPx2		= 15,
 	.tCKE		= 3,
 	.tCKESR		= 15,
 	.tZQCS		= 90,
 	.tZQCL		= 360,
 	.tZQINIT	= 1000,
 	.tDQSCKMAXx2	= 11,
 	.tRASmax	= 70,
 	.tFAW		= 50
 };

 static const struct lpddr2_ac_timings timings_elpida_333_mhz = {
 	.max_freq	= 333000000,
 	.RL		= 5,
 	.tRPab		= 21,
 	.tRCD		= 18,
 	.tWR		= 15,
 	.tRASmin	= 42,
 	.tRRD		= 10,
 	.tWTRx2		= 15,
 	.tXSR		= 140,
 	.tXPx2		= 15,
 	.tRFCab		= 130,
 	.tRTPx2		= 15,
 	.tCKE		= 3,
 	.tCKESR		= 15,
 	.tZQCS		= 90,
 	.tZQCL		= 360,
 	.tZQINIT	= 1000,
 	.tDQSCKMAXx2	= 11,
 	.tRASmax	= 70,
 	.tFAW		= 50
 };

 static const struct lpddr2_ac_timings timings_elpida_200_mhz = {
 	.max_freq	= 200000000,
 	.RL		= 3,
 	.tRPab		= 21,
 	.tRCD		= 18,
 	.tWR		= 15,
 	.tRASmin	= 42,
 	.tRRD		= 10,
 	.tWTRx2		= 20,
 	.tXSR		= 140,
 	.tXPx2		= 15,
 	.tRFCab		= 130,
 	.tRTPx2		= 15,
 	.tCKE		= 3,
 	.tCKESR		= 15,
 	.tZQCS		= 90,
 	.tZQCL		= 360,
 	.tZQINIT	= 1000,
 	.tDQSCKMAXx2	= 11,
 	.tRASmax	= 70,
 	.tFAW		= 50
 };

 static const struct lpddr2_min_tck min_tck_elpida = {
 	.tRL		= 3,
 	.tRP_AB		= 3,
 	.tRCD		= 3,
 	.tWR		= 3,
 	.tRAS_MIN	= 3,
 	.tRRD		= 2,
 	.tWTR		= 2,
 	.tXP		= 2,
 	.tRTP		= 2,
 	.tCKE		= 3,
 	.tCKESR		= 3,
 	.tFAW		= 8
 };

 static const struct lpddr2_ac_timings *elpida_ac_timings[MAX_NUM_SPEEDBINS] = {
 		&timings_elpida_200_mhz,
 		&timings_elpida_333_mhz,
 		&timings_elpida_400_mhz
 };

 const struct lpddr2_device_timings elpida_2G_S4_timings = {
 	.ac_timings	= elpida_ac_timings,
 	.min_tck	= &min_tck_elpida,
 };

 void emif_get_device_timings_sdp(u32 emif_nr,
 		const struct lpddr2_device_timings **cs0_device_timings,
 		const struct lpddr2_device_timings **cs1_device_timings)
 {
 	u32 omap_rev = omap_revision();

 	/* Identical devices on EMIF1 & EMIF2 */
 	*cs0_device_timings = &elpida_2G_S4_timings;

 	if ((omap_rev == OMAP4430_ES1_0) || (omap_rev == OMAP4470_ES1_0))
 		*cs1_device_timings = NULL;
 	else
 		*cs1_device_timings = &elpida_2G_S4_timings;
 }

 void emif_get_device_timings(u32 emif_nr,
 		const struct lpddr2_device_timings **cs0_device_timings,
 		const struct lpddr2_device_timings **cs1_device_timings)
 	__attribute__((weak, alias("emif_get_device_timings_sdp")));

 #endif /* CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS */

 const struct lpddr2_mr_regs mr_regs = {
 	.mr1	= MR1_BL_8_BT_SEQ_WRAP_EN_NWR_3,
 	.mr2	= 0x4,
 	.mr3	= -1,
 	.mr10	= MR10_ZQ_ZQINIT,
 	.mr16	= MR16_REF_FULL_ARRAY
 };

 void get_lpddr2_mr_regs(const struct lpddr2_mr_regs **regs)
 {
 	*regs = &mr_regs;
 }

 __weak const struct read_write_regs *get_bug_regs(u32 *iterations)
 {
 	return 0;
 }
	/*
	* Timing and Organization details of the Elpida parts used in OMAP4
	* SDPs and Panda
	*
	* (C) Copyright 2010
	* Texas Instruments, <www.ti.com>
	*
	* Aneesh V <aneesh@ti.com>
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <asm/emif.h>
	#include <asm/arch/sys_proto.h>

	/*
	* This file provides details of the LPDDR2 SDRAM parts used on OMAP4430
	* SDP and Panda. Since the parts used and geometry are identical for
	* SDP and Panda for a given OMAP4 revision, this information is kept
	* here instead of being in board directory. However the key functions
	* exported are weakly linked so that they can be over-ridden in the board
	* directory if there is a OMAP4 board in the future that uses a different
	* memory device or geometry.
	*
	* For any new board with different memory devices over-ride one or more
	* of the following functions as per the CONFIG flags you intend to enable:
	* - emif_get_reg_dump()
	* - emif_get_dmm_regs()
	* - emif_get_device_details()
	* - emif_get_device_timings()
	*/

	#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS

	const struct emif_regs emif_regs_elpida_200_mhz_2cs = {
	.sdram_config_init = 0x80000eb9,
	.sdram_config = 0x80001ab9,
	.ref_ctrl = 0x0000030c,
	.sdram_tim1 = 0x08648311,
	.sdram_tim2 = 0x101b06ca,
	.sdram_tim3 = 0x0048a19f,
	.read_idle_ctrl = 0x000501ff,
	.zq_config = 0x500b3214,
	.temp_alert_config = 0xd8016893,
	.emif_ddr_phy_ctlr_1_init = 0x049ffff5,
	.emif_ddr_phy_ctlr_1 = 0x049ff808
	};

	const struct emif_regs emif_regs_elpida_380_mhz_1cs = {
	.sdram_config_init = 0x80000eb1,
	.sdram_config = 0x80001ab1,
	.ref_ctrl = 0x000005cd,
	.sdram_tim1 = 0x10cb0622,
	.sdram_tim2 = 0x20350d52,
	.sdram_tim3 = 0x00b1431f,
	.read_idle_ctrl = 0x000501ff,
	.zq_config = 0x500b3214,
	.temp_alert_config = 0x58016893,
	.emif_ddr_phy_ctlr_1_init = 0x049ffff5,
	.emif_ddr_phy_ctlr_1 = 0x049ff418
	};

	const struct emif_regs emif_regs_elpida_400_mhz_1cs = {
	.sdram_config_init = 0x80800eb2,
	.sdram_config = 0x80801ab2,
	.ref_ctrl = 0x00000618,
	.sdram_tim1 = 0x10eb0662,
	.sdram_tim2 = 0x20370dd2,
	.sdram_tim3 = 0x00b1c33f,
	.read_idle_ctrl = 0x000501ff,
	.zq_config = 0x500b3215,
	.temp_alert_config = 0x58016893,
	.emif_ddr_phy_ctlr_1_init = 0x049ffff5,
	.emif_ddr_phy_ctlr_1 = 0x049ff418
	};

	const struct emif_regs emif_regs_elpida_400_mhz_2cs = {
	.sdram_config_init = 0x80000eb9,
	.sdram_config = 0x80001ab9,
	.ref_ctrl = 0x00000618,
	.sdram_tim1 = 0x10eb0662,
	.sdram_tim2 = 0x20370dd2,
	.sdram_tim3 = 0x00b1c33f,
	.read_idle_ctrl = 0x000501ff,
	.zq_config = 0xd00b3214,
	.temp_alert_config = 0xd8016893,
	.emif_ddr_phy_ctlr_1_init = 0x049ffff5,
	.emif_ddr_phy_ctlr_1 = 0x049ff418
	};

	const struct dmm_lisa_map_regs lisa_map_2G_x_1_x_2 = {
	.dmm_lisa_map_0 = 0xFF020100,
	.dmm_lisa_map_1 = 0,
	.dmm_lisa_map_2 = 0,
	.dmm_lisa_map_3 = 0x80540300,
	.is_ma_present = 0x0
	};

	const struct dmm_lisa_map_regs lisa_map_2G_x_2_x_2 = {
	.dmm_lisa_map_0 = 0xFF020100,
	.dmm_lisa_map_1 = 0,
	.dmm_lisa_map_2 = 0,
	.dmm_lisa_map_3 = 0x80640300,
	.is_ma_present = 0x0
	};

	const struct dmm_lisa_map_regs ma_lisa_map_2G_x_2_x_2 = {
	.dmm_lisa_map_0 = 0xFF020100,
	.dmm_lisa_map_1 = 0,
	.dmm_lisa_map_2 = 0,
	.dmm_lisa_map_3 = 0x80640300,
	.is_ma_present = 0x1
	};

	static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
	{
	u32 omap4_rev = omap_revision();

	/* Same devices and geometry on both EMIFs */
	if (omap4_rev == OMAP4430_ES1_0)
	*regs = &emif_regs_elpida_380_mhz_1cs;
	else if (omap4_rev == OMAP4430_ES2_0)
	*regs = &emif_regs_elpida_200_mhz_2cs;
	else if (omap4_rev < OMAP4470_ES1_0)
	*regs = &emif_regs_elpida_400_mhz_2cs;
	else
	*regs = &emif_regs_elpida_400_mhz_1cs;
	}
	void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
	__attribute__((weak, alias("emif_get_reg_dump_sdp")));

	static void emif_get_dmm_regs_sdp(const struct dmm_lisa_map_regs
	**dmm_lisa_regs)
	{
	u32 omap_rev = omap_revision();

	if (omap_rev == OMAP4430_ES1_0)
	*dmm_lisa_regs = &lisa_map_2G_x_1_x_2;
	else if (omap_rev < OMAP4460_ES1_0)
	*dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
	else
	*dmm_lisa_regs = &ma_lisa_map_2G_x_2_x_2;
	}

	void emif_get_dmm_regs(const struct dmm_lisa_map_regs **dmm_lisa_regs)
	__attribute__((weak, alias("emif_get_dmm_regs_sdp")));

	#else

	const struct lpddr2_device_details elpida_2G_S4_details = {
	.type = LPDDR2_TYPE_S4,
	.density = LPDDR2_DENSITY_2Gb,
	.io_width = LPDDR2_IO_WIDTH_32,
	.manufacturer = LPDDR2_MANUFACTURER_ELPIDA
	};

	const struct lpddr2_device_details elpida_4G_S4_details = {
	.type = LPDDR2_TYPE_S4,
	.density = LPDDR2_DENSITY_4Gb,
	.io_width = LPDDR2_IO_WIDTH_32,
	.manufacturer = LPDDR2_MANUFACTURER_ELPIDA
	};

	struct lpddr2_device_details *emif_get_device_details_sdp(u32 emif_nr, u8 cs,
	struct lpddr2_device_details *lpddr2_dev_details)
	{
	u32 omap_rev = omap_revision();

	/* EMIF1 & EMIF2 have identical configuration */
	if (((omap_rev == OMAP4430_ES1_0) \|\| (omap_rev == OMAP4470_ES1_0))
	&& (cs == CS1)) {
	/* Nothing connected on CS1 for 4430/4470 ES1.0 */
	return NULL;
	} else if (omap_rev < OMAP4470_ES1_0) {
	/* In all other 4430/4460 cases Elpida 2G device */
	*lpddr2_dev_details = elpida_2G_S4_details;
	} else {
	/* 4470: 4G device */
	*lpddr2_dev_details = elpida_4G_S4_details;
	}
	return lpddr2_dev_details;
	}

	struct lpddr2_device_details *emif_get_device_details(u32 emif_nr, u8 cs,
	struct lpddr2_device_details *lpddr2_dev_details)
	__attribute__((weak, alias("emif_get_device_details_sdp")));

	#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */

	#ifndef CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
	static const struct lpddr2_ac_timings timings_elpida_400_mhz = {
	.max_freq = 400000000,
	.RL = 6,
	.tRPab = 21,
	.tRCD = 18,
	.tWR = 15,
	.tRASmin = 42,
	.tRRD = 10,
	.tWTRx2 = 15,
	.tXSR = 140,
	.tXPx2 = 15,
	.tRFCab = 130,
	.tRTPx2 = 15,
	.tCKE = 3,
	.tCKESR = 15,
	.tZQCS = 90,
	.tZQCL = 360,
	.tZQINIT = 1000,
	.tDQSCKMAXx2 = 11,
	.tRASmax = 70,
	.tFAW = 50
	};

	static const struct lpddr2_ac_timings timings_elpida_333_mhz = {
	.max_freq = 333000000,
	.RL = 5,
	.tRPab = 21,
	.tRCD = 18,
	.tWR = 15,
	.tRASmin = 42,
	.tRRD = 10,
	.tWTRx2 = 15,
	.tXSR = 140,
	.tXPx2 = 15,
	.tRFCab = 130,
	.tRTPx2 = 15,
	.tCKE = 3,
	.tCKESR = 15,
	.tZQCS = 90,
	.tZQCL = 360,
	.tZQINIT = 1000,
	.tDQSCKMAXx2 = 11,
	.tRASmax = 70,
	.tFAW = 50
	};

	static const struct lpddr2_ac_timings timings_elpida_200_mhz = {
	.max_freq = 200000000,
	.RL = 3,
	.tRPab = 21,
	.tRCD = 18,
	.tWR = 15,
	.tRASmin = 42,
	.tRRD = 10,
	.tWTRx2 = 20,
	.tXSR = 140,
	.tXPx2 = 15,
	.tRFCab = 130,
	.tRTPx2 = 15,
	.tCKE = 3,
	.tCKESR = 15,
	.tZQCS = 90,
	.tZQCL = 360,
	.tZQINIT = 1000,
	.tDQSCKMAXx2 = 11,
	.tRASmax = 70,
	.tFAW = 50
	};

	static const struct lpddr2_min_tck min_tck_elpida = {
	.tRL = 3,
	.tRP_AB = 3,
	.tRCD = 3,
	.tWR = 3,
	.tRAS_MIN = 3,
	.tRRD = 2,
	.tWTR = 2,
	.tXP = 2,
	.tRTP = 2,
	.tCKE = 3,
	.tCKESR = 3,
	.tFAW = 8
	};

	static const struct lpddr2_ac_timings *elpida_ac_timings[MAX_NUM_SPEEDBINS] = {
	&timings_elpida_200_mhz,
	&timings_elpida_333_mhz,
	&timings_elpida_400_mhz
	};

	const struct lpddr2_device_timings elpida_2G_S4_timings = {
	.ac_timings = elpida_ac_timings,
	.min_tck = &min_tck_elpida,
	};

	void emif_get_device_timings_sdp(u32 emif_nr,
	const struct lpddr2_device_timings **cs0_device_timings,
	const struct lpddr2_device_timings **cs1_device_timings)
	{
	u32 omap_rev = omap_revision();

	/* Identical devices on EMIF1 & EMIF2 */
	*cs0_device_timings = &elpida_2G_S4_timings;

	if ((omap_rev == OMAP4430_ES1_0) \|\| (omap_rev == OMAP4470_ES1_0))
	*cs1_device_timings = NULL;
	else
	*cs1_device_timings = &elpida_2G_S4_timings;
	}

	void emif_get_device_timings(u32 emif_nr,
	const struct lpddr2_device_timings **cs0_device_timings,
	const struct lpddr2_device_timings **cs1_device_timings)
	__attribute__((weak, alias("emif_get_device_timings_sdp")));

	#endif /* CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS */

	const struct lpddr2_mr_regs mr_regs = {
	.mr1 = MR1_BL_8_BT_SEQ_WRAP_EN_NWR_3,
	.mr2 = 0x4,
	.mr3 = -1,
	.mr10 = MR10_ZQ_ZQINIT,
	.mr16 = MR16_REF_FULL_ARRAY
	};

	void get_lpddr2_mr_regs(const struct lpddr2_mr_regs **regs)
	{
	*regs = &mr_regs;
	}

	__weak const struct read_write_regs get_bug_regs(u32 iterations)
	{
	return 0;
	}