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 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));
19 /* We use soldered memory, but use an SPD EEPROM to describe it.
20 * The SPD has an unspecified dimm type, but the DDR2 initialization
21 * code requires a specific type to be specified. This sets the type
22 * as a standard unregistered SO-DIMM. */
23 if (spd->dimm_type == 0) {
25 ((uchar *)spd)[63] += 0x4;
29 void fsl_ddr_board_options(memctl_options_t *popts,
31 unsigned int ctrl_num)
34 * Factors to consider for clock adjust:
35 * - number of chips on bus
40 * This needs to be determined on a board-by-board basis.
44 popts->clk_adjust = 7;
47 * Factors to consider for CPO:
51 popts->cpo_override = 9;
54 * Factors to consider for write data delay:
64 popts->write_data_delay = 3;
67 * Factors to consider for half-strength driver enable:
68 * - number of DIMMs installed
70 popts->half_strength_driver_enable = 0;