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380b8f307c
Currently, there is only one EEPROM on c29xpcie board which is AT24C1024. We program the SPD data at beginning of the AT24C1024.But the AT24C1024 has a 16-bit sub-address mode. This patch is tomake it work when getting SPD in a 16-bit sub-address EEPROM. Signed-off-by: Po Liu <Po.Liu@freescale.com> Acked-by: York Sun <yorksun@freescale.com>
108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
/*
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* Copyright 2013 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <i2c.h>
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#include <asm/fsl_law.h>
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#include <fsl_ddr_sdram.h>
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#include <fsl_ddr_dimm_params.h>
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#include "cpld.h"
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#define C29XPCIE_HARDWARE_REVA 0x40
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/*
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* Micron MT41J128M16HA-15E
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* */
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dimm_params_t ddr_raw_timing = {
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.n_ranks = 1,
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.rank_density = 536870912u,
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.capacity = 536870912u,
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.primary_sdram_width = 32,
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.ec_sdram_width = 8,
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.registered_dimm = 0,
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.mirrored_dimm = 0,
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.n_row_addr = 14,
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.n_col_addr = 10,
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.n_banks_per_sdram_device = 8,
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.edc_config = 2,
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.burst_lengths_bitmask = 0x0c,
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.tckmin_x_ps = 1650,
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.caslat_x = 0x7e << 4, /* 5,6,7,8,9,10 */
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.taa_ps = 14050,
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.twr_ps = 15000,
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.trcd_ps = 13500,
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.trrd_ps = 75000,
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.trp_ps = 13500,
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.tras_ps = 40000,
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.trc_ps = 49500,
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.trfc_ps = 160000,
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.twtr_ps = 75000,
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.trtp_ps = 75000,
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.refresh_rate_ps = 7800000,
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.tfaw_ps = 30000,
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};
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int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
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unsigned int controller_number,
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unsigned int dimm_number)
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{
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const char dimm_model[] = "Fixed DDR on board";
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if ((controller_number == 0) && (dimm_number == 0)) {
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memcpy(pdimm, &ddr_raw_timing, sizeof(dimm_params_t));
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memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
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memcpy(pdimm->mpart, dimm_model, sizeof(dimm_model) - 1);
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}
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return 0;
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}
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void fsl_ddr_board_options(memctl_options_t *popts,
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dimm_params_t *pdimm,
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unsigned int ctrl_num)
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{
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struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
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int i;
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popts->clk_adjust = 4;
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popts->cpo_override = 0x1f;
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popts->write_data_delay = 4;
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popts->half_strength_driver_enable = 1;
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popts->bstopre = 0x3cf;
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popts->quad_rank_present = 1;
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popts->rtt_override = 1;
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popts->rtt_override_value = 1;
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popts->dynamic_power = 1;
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/* Write leveling override */
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popts->wrlvl_en = 1;
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popts->wrlvl_override = 1;
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popts->wrlvl_sample = 0xf;
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popts->wrlvl_start = 0x4;
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popts->trwt_override = 1;
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popts->trwt = 0;
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if (in_8(&cpld_data->hwver) == C29XPCIE_HARDWARE_REVA)
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popts->ecc_mode = 0;
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for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
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popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER;
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popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS;
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}
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}
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void get_spd(generic_spd_eeprom_t *spd, u8 i2c_address)
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{
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int ret = i2c_read(i2c_address, 0, 2, (uint8_t *)spd,
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sizeof(generic_spd_eeprom_t));
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if (ret) {
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printf("DDR: failed to read SPD from address %u\n",
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i2c_address);
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memset(spd, 0, sizeof(generic_spd_eeprom_t));
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}
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}
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