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/*
* Timing and Organization details of the Elpida 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_elpida_532_mhz_1cs = {
.sdram_config_init = 0x80801aB2,
.sdram_config = 0x808022B2,
.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 = 0x0E38200D,
.emif_ddr_phy_ctlr_1 = 0x0E38200D
};
const struct dmm_lisa_map_regs lisa_map_4G_x_1_x_2 = {
.dmm_lisa_map_0 = 0xFF020100,
.dmm_lisa_map_1 = 0,
.dmm_lisa_map_2 = 0,
.dmm_lisa_map_3 = 0x80640300
};
static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
{
*regs = &emif_regs_elpida_532_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)
{
*dmm_lisa_regs = &lisa_map_4G_x_1_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 elpida_4G_S4_details = {
.type = LPDDR2_TYPE_S4,
.density = LPDDR2_DENSITY_4Gb,
.io_width = LPDDR2_IO_WIDTH_32,
.manufacturer = LPDDR2_MANUFACTURER_ELPIDA
};
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 = elpida_4G_S4_details;
/* Nothing is conected on cs1 */
cs1_device_details = NULL;
}
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 */
#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_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_jedec_532_mhz
};
static const struct lpddr2_device_timings elpida_4G_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)
{
/* Identical devices on EMIF1 & EMIF2 */
*cs0_device_timings = &elpida_4G_S4_timings;
*cs1_device_timings = NULL;
}
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 */
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