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>
14 static void get_spd(ddr2_spd_eeprom_t *spd, unsigned char i2c_address)
16 i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr2_spd_eeprom_t));
19 unsigned int fsl_ddr_get_mem_data_rate(void)
21 return get_ddr_freq(0);
24 void fsl_ddr_get_spd(ddr2_spd_eeprom_t *ctrl_dimms_spd,
25 unsigned int ctrl_num)
28 unsigned int i2c_address = 0;
30 for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
31 if (ctrl_num == 0 && i == 0) {
32 i2c_address = SPD_EEPROM_ADDRESS1;
34 if (ctrl_num == 1 && i == 0) {
35 i2c_address = SPD_EEPROM_ADDRESS2;
37 get_spd(&(ctrl_dimms_spd[i]), i2c_address);
41 void fsl_ddr_board_options(memctl_options_t *popts, unsigned int ctrl_num)
44 * Factors to consider for clock adjust:
45 * - number of chips on bus
50 * This needs to be determined on a board-by-board basis.
54 popts->clk_adjust = 7;
57 * Factors to consider for CPO:
61 popts->cpo_override = 10;
64 * Factors to consider for write data delay:
74 popts->write_data_delay = 5;
77 * Factors to consider for half-strength driver enable:
78 * - number of DIMMs installed
80 popts->half_strength_driver_enable = 0;