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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2014 Freescale Semiconductor, Inc.
* Copyright 2020 Hitachi Power Grids. All rights reserved.
*/
#include <common.h>
#include <fsl_ddr_sdram.h>
#include <fsl_ddr_dimm_params.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/global_data.h>
#include <asm/arch/ls102xa_soc.h>
DECLARE_GLOBAL_DATA_PTR;
void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
unsigned int ctrl_num)
{
if (ctrl_num > 1) {
printf("Not supported controller number %d\n", ctrl_num);
return;
}
// 1/2 DRAM cycle (should be increased in case of ADDR/CMD heavily loaded than the clock)
popts->clk_adjust = 0x4;
popts->write_data_delay = 0x4;
// wr leveling start value for lane 0
popts->wrlvl_start = 0x5;
// wr leveling start values for lanes 1-3 (lane 4 not there)
popts->wrlvl_ctl_2 = 0x05050500;
// 32-bit DRAM, no need to set start values for lanes we do not have (5-8)
popts->wrlvl_ctl_3 = 0x0;
popts->cpo_override = 0x1f;
/* force DDR bus width to 32 bits */
popts->data_bus_width = 1;
popts->otf_burst_chop_en = 0;
popts->burst_length = DDR_BL8;
/*
* Factors to consider for half-strength driver enable:
* - number of DIMMs installed
*/
popts->half_strength_driver_enable = 1;
/*
* Write leveling override
*/
popts->wrlvl_override = 1;
popts->wrlvl_sample = 0xf;
/*
* Rtt and Rtt_WR override
*/
popts->rtt_override = 0;
/* Enable ZQ calibration */
popts->zq_en = 1;
popts->cswl_override = DDR_CSWL_CS0;
/* optimize cpo for erratum A-009942 */
popts->cpo_sample = 0x58;
/* DHC_EN =1, ODT = 75 Ohm */
popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
}
int fsl_initdram(void)
{
phys_size_t dram_size;
puts("Initializing DDR....using SPD\n");
dram_size = fsl_ddr_sdram();
erratum_a008850_post();
gd->ram_size = dram_size;
return 0;
}
int dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
gd->bd->bi_dram[0].size = gd->ram_size;
return 0;
}
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