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 unsigned int fsl_ddr_get_mem_data_rate(void)
23 return get_bus_freq(0);
26 void fsl_ddr_get_spd(ddr2_spd_eeprom_t
*ctrl_dimms_spd
,
27 unsigned int ctrl_num
)
30 unsigned int i2c_address
= 0;
32 for (i
= 0; i
< CONFIG_DIMM_SLOTS_PER_CTLR
; i
++) {
33 if (ctrl_num
== 0 && i
== 0) {
34 i2c_address
= SPD_EEPROM_ADDRESS1
;
36 if (ctrl_num
== 0 && i
== 1) {
37 i2c_address
= SPD_EEPROM_ADDRESS2
;
39 if (ctrl_num
== 1 && i
== 0) {
40 i2c_address
= SPD_EEPROM_ADDRESS3
;
42 if (ctrl_num
== 1 && i
== 1) {
43 i2c_address
= SPD_EEPROM_ADDRESS4
;
45 get_spd(&(ctrl_dimms_spd
[i
]), i2c_address
);
49 void fsl_ddr_board_options(memctl_options_t
*popts
,
51 unsigned int ctrl_num
)
54 * Factors to consider for clock adjust:
55 * - number of chips on bus
60 * This needs to be determined on a board-by-board basis.
64 popts
->clk_adjust
= 7;
67 * Factors to consider for CPO:
71 popts
->cpo_override
= 10;
74 * Factors to consider for write data delay:
84 popts
->write_data_delay
= 3;
87 * Factors to consider for half-strength driver enable:
88 * - number of DIMMs installed
90 popts
->half_strength_driver_enable
= 0;