diff options
Diffstat (limited to 'board/atum8548/ddr.c')
-rw-r--r-- | board/atum8548/ddr.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/board/atum8548/ddr.c b/board/atum8548/ddr.c deleted file mode 100644 index ab64fa8..0000000 --- a/board/atum8548/ddr.c +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright 2008 Freescale Semiconductor, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * Version 2 as published by the Free Software Foundation. - */ - -#include <common.h> -#include <i2c.h> - -#include <asm/fsl_ddr_sdram.h> -#include <asm/fsl_ddr_dimm_params.h> - -static void -get_spd(ddr2_spd_eeprom_t *spd, unsigned char i2c_address) -{ - i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr2_spd_eeprom_t)); -} - -unsigned int fsl_ddr_get_mem_data_rate(void) -{ - return get_ddr_freq(0); -} - -void fsl_ddr_get_spd(ddr2_spd_eeprom_t *ctrl_dimms_spd, - unsigned int ctrl_num) -{ - unsigned int i; - - if (ctrl_num) { - printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num); - return; - } - - for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) { - get_spd(&(ctrl_dimms_spd[i]), SPD_EEPROM_ADDRESS); - } -} - -void fsl_ddr_board_options(memctl_options_t *popts, - dimm_params_t *pdimm, - unsigned int ctrl_num) -{ - /* - * Factors to consider for clock adjust: - * - number of chips on bus - * - position of slot - * - DDR1 vs. DDR2? - * - ??? - * - * This needs to be determined on a board-by-board basis. - * 0110 3/4 cycle late - * 0111 7/8 cycle late - */ - popts->clk_adjust = 7; - - /* - * Factors to consider for CPO: - * - frequency - * - ddr1 vs. ddr2 - */ - popts->cpo_override = 10; - - /* - * Factors to consider for write data delay: - * - number of DIMMs - * - * 1 = 1/4 clock delay - * 2 = 1/2 clock delay - * 3 = 3/4 clock delay - * 4 = 1 clock delay - * 5 = 5/4 clock delay - * 6 = 3/2 clock delay - */ - popts->write_data_delay = 3; - - /* - * Factors to consider for half-strength driver enable: - * - number of DIMMs installed - */ - popts->half_strength_driver_enable = 0; -} |