| /* |
| * 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 |