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u-boot/board/freescale/p1010rdb/ddr.c
Tom Rini e2eca3e5c2 P1010RDB: Drop support for not-CONFIG_SYS_DDR_RAW_TIMING
All platforms today define CONFIG_SYS_DDR_RAW_TIMING, so drop the code
for this option being unset.

Cc: Qiang Zhao <qiang.zhao@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
2022-08-04 16:18:47 -04:00

98 lines
2.3 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2010-2011 Freescale Semiconductor, Inc.
*/
#include <common.h>
#include <vsprintf.h>
#include <asm/global_data.h>
#include <asm/mmu.h>
#include <asm/immap_85xx.h>
#include <asm/processor.h>
#include <fsl_ddr_sdram.h>
#include <fsl_ddr_dimm_params.h>
#include <asm/io.h>
#include <asm/fsl_law.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* Samsung K4B2G0846C-HCF8
* The following timing are for "downshift"
* i.e. to use CL9 part as CL7
* otherwise, tAA, tRCD, tRP will be 13500ps
* and tRC will be 49500ps
*/
dimm_params_t ddr_raw_timing = {
.n_ranks = 1,
.rank_density = 1073741824u,
.capacity = 1073741824u,
.primary_sdram_width = 32,
.ec_sdram_width = 0,
.registered_dimm = 0,
.mirrored_dimm = 0,
.n_row_addr = 15,
.n_col_addr = 10,
.n_banks_per_sdram_device = 8,
.edc_config = 0,
.burst_lengths_bitmask = 0x0c,
.tckmin_x_ps = 1875,
.caslat_x = 0x1e << 4, /* 5,6,7,8 */
.taa_ps = 13125,
.twr_ps = 15000,
.trcd_ps = 13125,
.trrd_ps = 7500,
.trp_ps = 13125,
.tras_ps = 37500,
.trc_ps = 50625,
.trfc_ps = 160000,
.twtr_ps = 7500,
.trtp_ps = 7500,
.refresh_rate_ps = 7800000,
.tfaw_ps = 37500,
};
int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
unsigned int controller_number,
unsigned int dimm_number)
{
const char dimm_model[] = "Fixed DDR on board";
if ((controller_number == 0) && (dimm_number == 0)) {
memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
}
return 0;
}
void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
unsigned int ctrl_num)
{
struct cpu_type *cpu;
int i;
popts->clk_adjust = 6;
popts->cpo_override = 0x1f;
popts->write_data_delay = 2;
popts->half_strength_driver_enable = 1;
/* Write leveling override */
popts->wrlvl_en = 1;
popts->wrlvl_override = 1;
popts->wrlvl_sample = 0xf;
popts->wrlvl_start = 0x8;
popts->trwt_override = 1;
popts->trwt = 0;
cpu = gd->arch.cpu;
/* P1014 and it's derivatives support max 16it DDR width */
if (cpu->soc_ver == SVR_P1014)
popts->data_bus_width = DDR_DATA_BUS_WIDTH_16;
for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER;
popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS;
}
}