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/*
* Copyright 2010 Freescale Semiconductor, Inc.
* Authors: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
* Timur Tabi <timur@freescale.com>
*
* 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.
*/
#include <common.h>
#include <i2c.h>
#include <asm/fsl_ddr_sdram.h>
#include <asm/fsl_ddr_dimm_params.h>
void fsl_ddr_board_options(memctl_options_t *popts, dimm_params_t *pdimm,
unsigned int ctrl_num)
{
unsigned int i;
if (ctrl_num) {
printf("Wrong parameter for controller number %d", ctrl_num);
return;
}
if (!pdimm->n_ranks)
return;
/* set odt_rd_cfg and odt_wr_cfg. */
for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
popts->cs_local_opts[i].odt_rd_cfg = 0;
popts->cs_local_opts[i].odt_wr_cfg = 1;
}
popts->clk_adjust = 5;
popts->cpo_override = 0x1f;
popts->write_data_delay = 2;
popts->half_strength_driver_enable = 1;
/* Per AN4039, enable ZQ calibration. */
popts->zq_en = 1;
}
#ifdef CONFIG_SPD_EEPROM
/*
* we only have a "fake" SPD-EEPROM here, which has 16 bit addresses
*/
void get_spd(generic_spd_eeprom_t *spd, u8 i2c_address)
{
int ret = i2c_read(i2c_address, 0, 2, (uchar *)spd,
sizeof(generic_spd_eeprom_t));
if (ret) {
if (i2c_address ==
#ifdef SPD_EEPROM_ADDRESS
SPD_EEPROM_ADDRESS
#elif defined(SPD_EEPROM_ADDRESS1)
SPD_EEPROM_ADDRESS1
#endif
) {
printf("DDR: failed to read SPD from address %u\n",
i2c_address);
} else {
debug("DDR: failed to read SPD from address %u\n",
i2c_address);
}
memset(spd, 0, sizeof(generic_spd_eeprom_t));
}
}
#endif
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