arch/arm/cpu/armv7/omap5/sdram.c - boot/u-boot-linaro-stable - Git at Google

 /*
  * Timing and Organization details of the ddr device parts used in OMAP5
  * EVM
  *
  * (C) Copyright 2010
  * Texas Instruments, <www.ti.com>
  *
  * Aneesh V <aneesh@ti.com>
  * Sricharan R <r.sricharan@ti.com>
  *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */

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

 /*
  * This file provides details of the LPDDR2 SDRAM parts used on OMAP5
  * EVM. Since the parts used and geometry are identical for
  * evm for a given OMAP5 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 OMAP5 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_532_mhz_2cs = {
 	.sdram_config_init		= 0x80800EBA,
 	.sdram_config			= 0x808022BA,
 	.ref_ctrl			= 0x0000081A,
 	.sdram_tim1			= 0x772F6873,
 	.sdram_tim2			= 0x304a129a,
 	.sdram_tim3			= 0x02f7e45f,
 	.read_idle_ctrl			= 0x00050000,
 	.zq_config			= 0x000b3215,
 	.temp_alert_config		= 0x08000a05,
 	.emif_ddr_phy_ctlr_1_init	= 0x0E28420d,
 	.emif_ddr_phy_ctlr_1		= 0x0E28420d,
 	.emif_ddr_ext_phy_ctrl_1	= 0x04020080,
 	.emif_ddr_ext_phy_ctrl_2	= 0x28C518A3,
 	.emif_ddr_ext_phy_ctrl_3	= 0x518A3146,
 	.emif_ddr_ext_phy_ctrl_4	= 0x0014628C,
 	.emif_ddr_ext_phy_ctrl_5	= 0x04010040
 };

 const struct emif_regs emif_regs_266_mhz_2cs = {
 	.sdram_config_init		= 0x80800EBA,
 	.sdram_config			= 0x808022BA,
 	.ref_ctrl			= 0x0000040D,
 	.sdram_tim1			= 0x2A86B419,
 	.sdram_tim2			= 0x1025094A,
 	.sdram_tim3			= 0x026BA22F,
 	.read_idle_ctrl			= 0x00050000,
 	.zq_config			= 0x000b3215,
 	.temp_alert_config		= 0x08000a05,
 	.emif_ddr_phy_ctlr_1_init	= 0x0E28420d,
 	.emif_ddr_phy_ctlr_1		= 0x0E28420d,
 	.emif_ddr_ext_phy_ctrl_1	= 0x04020080,
 	.emif_ddr_ext_phy_ctrl_2	= 0x0A414829,
 	.emif_ddr_ext_phy_ctrl_3	= 0x14829052,
 	.emif_ddr_ext_phy_ctrl_4	= 0x000520A4,
 	.emif_ddr_ext_phy_ctrl_5	= 0x04010040
 };

 const struct emif_regs emif_regs_ddr3_532_mhz_1cs = {
 	.sdram_config_init		= 0x61851B32,
 	.sdram_config			= 0x61851B32,
 	.ref_ctrl			= 0x00001035,
 	.sdram_tim1			= 0xCCCF36B3,
 	.sdram_tim2			= 0x308F7FDA,
 	.sdram_tim3			= 0x027F88A8,
 	.read_idle_ctrl			= 0x00050000,
 	.zq_config			= 0x0007190B,
 	.temp_alert_config		= 0x00000000,
 	.emif_ddr_phy_ctlr_1_init	= 0x0020420A,
 	.emif_ddr_phy_ctlr_1		= 0x0024420A,
 	.emif_ddr_ext_phy_ctrl_1	= 0x04040100,
 	.emif_ddr_ext_phy_ctrl_2	= 0x00000000,
 	.emif_ddr_ext_phy_ctrl_3	= 0x00000000,
 	.emif_ddr_ext_phy_ctrl_4	= 0x00000000,
 	.emif_ddr_ext_phy_ctrl_5	= 0x04010040,
 	.emif_rd_wr_lvl_rmp_win		= 0x00000000,
 	.emif_rd_wr_lvl_rmp_ctl		= 0x80000000,
 	.emif_rd_wr_lvl_ctl		= 0x00000000,
 	.emif_rd_wr_exec_thresh		= 0x00000305
 };

 const struct dmm_lisa_map_regs lisa_map_4G_x_2_x_2 = {
 	.dmm_lisa_map_0 = 0x0,
 	.dmm_lisa_map_1 = 0x0,
 	.dmm_lisa_map_2 = 0x80740300,
 	.dmm_lisa_map_3 = 0xFF020100,
 	.is_ma_present	= 0x1
 };

 const u32 ext_phy_ctrl_const_base[EMIF_EXT_PHY_CTRL_CONST_REG] = {
 	0x01004010,
 	0x00001004,
 	0x04010040,
 	0x01004010,
 	0x00001004,
 	0x00000000,
 	0x00000000,
 	0x00000000,
 	0x80080080,
 	0x00800800,
 	0x08102040,
 	0x00000001,
 	0x540A8150,
 	0xA81502a0,
 	0x002A0540,
 	0x00000000,
 	0x00000000,
 	0x00000000,
 	0x00000077
 };

 const u32 ddr3_ext_phy_ctrl_const_base[EMIF_EXT_PHY_CTRL_CONST_REG] = {
 	0x01004010,
 	0x00001004,
 	0x04010040,
 	0x01004010,
 	0x00001004,
 	0x00000000,
 	0x00000000,
 	0x00000000,
 	0x80080080,
 	0x00800800,
 	0x08102040,
 	0x00000002,
 	0x0,
 	0x0,
 	0x0,
 	0x00000000,
 	0x00000000,
 	0x00000000,
 	0x00000057
 };

 static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
 {
 	if (omap_revision() == OMAP5432_ES1_0)
 		*regs = &emif_regs_ddr3_532_mhz_1cs;
 	else
 		*regs = &emif_regs_532_mhz_2cs;
 }
 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)
 {
 	*dmm_lisa_regs = &lisa_map_4G_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

 static const struct lpddr2_device_details dev_4G_S4_details = {
 	.type		= LPDDR2_TYPE_S4,
 	.density	= LPDDR2_DENSITY_4Gb,
 	.io_width	= LPDDR2_IO_WIDTH_32,
 	.manufacturer	= LPDDR2_MANUFACTURER_SAMSUNG
 };

 static void emif_get_device_details_sdp(u32 emif_nr,
 		struct lpddr2_device_details *cs0_device_details,
 		struct lpddr2_device_details *cs1_device_details)
 {
 	/* EMIF1 & EMIF2 have identical configuration */
 	*cs0_device_details = dev_4G_S4_details;
 	*cs1_device_details = dev_4G_S4_details;
 }

 void emif_get_device_details(u32 emif_nr,
 		struct lpddr2_device_details *cs0_device_details,
 		struct lpddr2_device_details *cs1_device_details)
 	__attribute__((weak, alias("emif_get_device_details_sdp")));

 #endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */

 void do_ext_phy_settings(u32 base, const struct emif_regs *regs)
 {
 	u32 *ext_phy_ctrl_base = 0;
 	u32 *emif_ext_phy_ctrl_base = 0;
 	u32 i = 0;

 	struct emif_reg_struct *emif = (struct emif_reg_struct *)base;

 	ext_phy_ctrl_base = (u32 *) &(regs->emif_ddr_ext_phy_ctrl_1);
 	emif_ext_phy_ctrl_base = (u32 *) &(emif->emif_ddr_ext_phy_ctrl_1);

 	/* Configure external phy control timing registers */
 	for (i = 0; i < EMIF_EXT_PHY_CTRL_TIMING_REG; i++) {
 		writel(*ext_phy_ctrl_base, emif_ext_phy_ctrl_base++);
 		/* Update shadow registers */
 		writel(*ext_phy_ctrl_base++, emif_ext_phy_ctrl_base++);
 	}

 	/*
 	 * external phy 6-24 registers do not change with
 	 * ddr frequency
 	 */
 	for (i = 0; i < EMIF_EXT_PHY_CTRL_CONST_REG; i++) {
 		writel(ext_phy_ctrl_const_base[i],
 					emif_ext_phy_ctrl_base++);
 		/* Update shadow registers */
 		writel(ext_phy_ctrl_const_base[i],
 					emif_ext_phy_ctrl_base++);
 	}
 }

 #ifndef CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
 static const struct lpddr2_ac_timings timings_jedec_532_mhz = {
 	.max_freq	= 532000000,
 	.RL		= 8,
 	.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_min_tck min_tck = {
 	.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 *ac_timings[MAX_NUM_SPEEDBINS] = {
 	&timings_jedec_532_mhz
 };

 static const struct lpddr2_device_timings dev_4G_S4_timings = {
 	.ac_timings	= ac_timings,
 	.min_tck	= &min_tck,
 };

 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)
 {
 	/* Identical devices on EMIF1 & EMIF2 */
 	*cs0_device_timings = &dev_4G_S4_timings;
 	*cs1_device_timings = &dev_4G_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 */
	/*
	* Timing and Organization details of the ddr device parts used in OMAP5
	* EVM
	*
	* (C) Copyright 2010
	* Texas Instruments, <www.ti.com>
	*
	* Aneesh V <aneesh@ti.com>
	* Sricharan R <r.sricharan@ti.com>
	*
	* See file CREDITS for list of people who contributed to this
	* project.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation; either version 2 of
	* the License, or (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	* MA 02111-1307 USA
	*/

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

	/*
	* This file provides details of the LPDDR2 SDRAM parts used on OMAP5
	* EVM. Since the parts used and geometry are identical for
	* evm for a given OMAP5 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 OMAP5 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_532_mhz_2cs = {
	.sdram_config_init = 0x80800EBA,
	.sdram_config = 0x808022BA,
	.ref_ctrl = 0x0000081A,
	.sdram_tim1 = 0x772F6873,
	.sdram_tim2 = 0x304a129a,
	.sdram_tim3 = 0x02f7e45f,
	.read_idle_ctrl = 0x00050000,
	.zq_config = 0x000b3215,
	.temp_alert_config = 0x08000a05,
	.emif_ddr_phy_ctlr_1_init = 0x0E28420d,
	.emif_ddr_phy_ctlr_1 = 0x0E28420d,
	.emif_ddr_ext_phy_ctrl_1 = 0x04020080,
	.emif_ddr_ext_phy_ctrl_2 = 0x28C518A3,
	.emif_ddr_ext_phy_ctrl_3 = 0x518A3146,
	.emif_ddr_ext_phy_ctrl_4 = 0x0014628C,
	.emif_ddr_ext_phy_ctrl_5 = 0x04010040
	};

	const struct emif_regs emif_regs_266_mhz_2cs = {
	.sdram_config_init = 0x80800EBA,
	.sdram_config = 0x808022BA,
	.ref_ctrl = 0x0000040D,
	.sdram_tim1 = 0x2A86B419,
	.sdram_tim2 = 0x1025094A,
	.sdram_tim3 = 0x026BA22F,
	.read_idle_ctrl = 0x00050000,
	.zq_config = 0x000b3215,
	.temp_alert_config = 0x08000a05,
	.emif_ddr_phy_ctlr_1_init = 0x0E28420d,
	.emif_ddr_phy_ctlr_1 = 0x0E28420d,
	.emif_ddr_ext_phy_ctrl_1 = 0x04020080,
	.emif_ddr_ext_phy_ctrl_2 = 0x0A414829,
	.emif_ddr_ext_phy_ctrl_3 = 0x14829052,
	.emif_ddr_ext_phy_ctrl_4 = 0x000520A4,
	.emif_ddr_ext_phy_ctrl_5 = 0x04010040
	};

	const struct emif_regs emif_regs_ddr3_532_mhz_1cs = {
	.sdram_config_init = 0x61851B32,
	.sdram_config = 0x61851B32,
	.ref_ctrl = 0x00001035,
	.sdram_tim1 = 0xCCCF36B3,
	.sdram_tim2 = 0x308F7FDA,
	.sdram_tim3 = 0x027F88A8,
	.read_idle_ctrl = 0x00050000,
	.zq_config = 0x0007190B,
	.temp_alert_config = 0x00000000,
	.emif_ddr_phy_ctlr_1_init = 0x0020420A,
	.emif_ddr_phy_ctlr_1 = 0x0024420A,
	.emif_ddr_ext_phy_ctrl_1 = 0x04040100,
	.emif_ddr_ext_phy_ctrl_2 = 0x00000000,
	.emif_ddr_ext_phy_ctrl_3 = 0x00000000,
	.emif_ddr_ext_phy_ctrl_4 = 0x00000000,
	.emif_ddr_ext_phy_ctrl_5 = 0x04010040,
	.emif_rd_wr_lvl_rmp_win = 0x00000000,
	.emif_rd_wr_lvl_rmp_ctl = 0x80000000,
	.emif_rd_wr_lvl_ctl = 0x00000000,
	.emif_rd_wr_exec_thresh = 0x00000305
	};

	const struct dmm_lisa_map_regs lisa_map_4G_x_2_x_2 = {
	.dmm_lisa_map_0 = 0x0,
	.dmm_lisa_map_1 = 0x0,
	.dmm_lisa_map_2 = 0x80740300,
	.dmm_lisa_map_3 = 0xFF020100,
	.is_ma_present = 0x1
	};

	const u32 ext_phy_ctrl_const_base[EMIF_EXT_PHY_CTRL_CONST_REG] = {
	0x01004010,
	0x00001004,
	0x04010040,
	0x01004010,
	0x00001004,
	0x00000000,
	0x00000000,
	0x00000000,
	0x80080080,
	0x00800800,
	0x08102040,
	0x00000001,
	0x540A8150,
	0xA81502a0,
	0x002A0540,
	0x00000000,
	0x00000000,
	0x00000000,
	0x00000077
	};

	const u32 ddr3_ext_phy_ctrl_const_base[EMIF_EXT_PHY_CTRL_CONST_REG] = {
	0x01004010,
	0x00001004,
	0x04010040,
	0x01004010,
	0x00001004,
	0x00000000,
	0x00000000,
	0x00000000,
	0x80080080,
	0x00800800,
	0x08102040,
	0x00000002,
	0x0,
	0x0,
	0x0,
	0x00000000,
	0x00000000,
	0x00000000,
	0x00000057
	};

	static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
	{
	if (omap_revision() == OMAP5432_ES1_0)
	*regs = &emif_regs_ddr3_532_mhz_1cs;
	else
	*regs = &emif_regs_532_mhz_2cs;
	}
	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)
	{
	*dmm_lisa_regs = &lisa_map_4G_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

	static const struct lpddr2_device_details dev_4G_S4_details = {
	.type = LPDDR2_TYPE_S4,
	.density = LPDDR2_DENSITY_4Gb,
	.io_width = LPDDR2_IO_WIDTH_32,
	.manufacturer = LPDDR2_MANUFACTURER_SAMSUNG
	};

	static void emif_get_device_details_sdp(u32 emif_nr,
	struct lpddr2_device_details *cs0_device_details,
	struct lpddr2_device_details *cs1_device_details)
	{
	/* EMIF1 & EMIF2 have identical configuration */
	*cs0_device_details = dev_4G_S4_details;
	*cs1_device_details = dev_4G_S4_details;
	}

	void emif_get_device_details(u32 emif_nr,
	struct lpddr2_device_details *cs0_device_details,
	struct lpddr2_device_details *cs1_device_details)
	__attribute__((weak, alias("emif_get_device_details_sdp")));

	#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */

	void do_ext_phy_settings(u32 base, const struct emif_regs *regs)
	{
	u32 *ext_phy_ctrl_base = 0;
	u32 *emif_ext_phy_ctrl_base = 0;
	u32 i = 0;

	struct emif_reg_struct emif = (struct emif_reg_struct )base;

	ext_phy_ctrl_base = (u32 *) &(regs->emif_ddr_ext_phy_ctrl_1);
	emif_ext_phy_ctrl_base = (u32 *) &(emif->emif_ddr_ext_phy_ctrl_1);

	/* Configure external phy control timing registers */
	for (i = 0; i < EMIF_EXT_PHY_CTRL_TIMING_REG; i++) {
	writel(*ext_phy_ctrl_base, emif_ext_phy_ctrl_base++);
	/* Update shadow registers */
	writel(*ext_phy_ctrl_base++, emif_ext_phy_ctrl_base++);
	}

	/*
	* external phy 6-24 registers do not change with
	* ddr frequency
	*/
	for (i = 0; i < EMIF_EXT_PHY_CTRL_CONST_REG; i++) {
	writel(ext_phy_ctrl_const_base[i],
	emif_ext_phy_ctrl_base++);
	/* Update shadow registers */
	writel(ext_phy_ctrl_const_base[i],
	emif_ext_phy_ctrl_base++);
	}
	}

	#ifndef CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
	static const struct lpddr2_ac_timings timings_jedec_532_mhz = {
	.max_freq = 532000000,
	.RL = 8,
	.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_min_tck min_tck = {
	.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 *ac_timings[MAX_NUM_SPEEDBINS] = {
	&timings_jedec_532_mhz
	};

	static const struct lpddr2_device_timings dev_4G_S4_timings = {
	.ac_timings = ac_timings,
	.min_tck = &min_tck,
	};

	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)
	{
	/* Identical devices on EMIF1 & EMIF2 */
	*cs0_device_timings = &dev_4G_S4_timings;
	*cs1_device_timings = &dev_4G_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 */