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>
15 static void get_spd(ddr2_spd_eeprom_t *spd, unsigned char i2c_address)
17 i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr2_spd_eeprom_t));
20 unsigned int fsl_ddr_get_mem_data_rate(void)
22 return get_ddr_freq(0);
25 void fsl_ddr_get_spd(ddr2_spd_eeprom_t *ctrl_dimms_spd,
26 unsigned int ctrl_num)
29 unsigned int i2c_address = 0;
31 for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
32 if (ctrl_num == 0 && i == 0) {
33 i2c_address = SPD_EEPROM_ADDRESS1;
35 if (ctrl_num == 1 && i == 0) {
36 i2c_address = SPD_EEPROM_ADDRESS2;
38 get_spd(&(ctrl_dimms_spd[i]), i2c_address);
42 void fsl_ddr_board_options(memctl_options_t *popts,
44 unsigned int ctrl_num)
47 * Factors to consider for clock adjust:
48 * - number of chips on bus
53 * This needs to be determined on a board-by-board basis.
57 popts->clk_adjust = 7;
60 * Factors to consider for CPO:
64 popts->cpo_override = 10;
67 * Factors to consider for write data delay:
77 popts->write_data_delay = 5;
80 * Factors to consider for half-strength driver enable:
81 * - number of DIMMs installed
83 popts->half_strength_driver_enable = 0;