2 * Copyright 2008 Freescale Semiconductor, Inc.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * Version 2 as published by the Free Software Foundation.
12 #include <asm/fsl_ddr_sdram.h>
13 #include <asm/fsl_ddr_dimm_params.h>
16 get_spd(ddr2_spd_eeprom_t *spd, unsigned char i2c_address)
18 i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr2_spd_eeprom_t));
21 void fsl_ddr_get_spd(ddr2_spd_eeprom_t *ctrl_dimms_spd,
22 unsigned int ctrl_num)
25 unsigned int i2c_address = 0;
27 for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
28 if (ctrl_num == 0 && i == 0) {
29 i2c_address = SPD_EEPROM_ADDRESS1;
31 if (ctrl_num == 0 && i == 1) {
32 i2c_address = SPD_EEPROM_ADDRESS2;
34 if (ctrl_num == 1 && i == 0) {
35 i2c_address = SPD_EEPROM_ADDRESS3;
37 if (ctrl_num == 1 && i == 1) {
38 i2c_address = SPD_EEPROM_ADDRESS4;
40 get_spd(&(ctrl_dimms_spd[i]), i2c_address);
44 void fsl_ddr_board_options(memctl_options_t *popts,
46 unsigned int ctrl_num)
49 * Factors to consider for clock adjust:
50 * - number of chips on bus
55 * This needs to be determined on a board-by-board basis.
59 popts->clk_adjust = 7;
62 * Factors to consider for CPO:
66 popts->cpo_override = 10;
69 * Factors to consider for write data delay:
79 popts->write_data_delay = 3;
82 * Factors to consider for half-strength driver enable:
83 * - number of DIMMs installed
85 popts->half_strength_driver_enable = 0;