diff options
Diffstat (limited to 'board/freescale/mpc8572ds/ddr.c')
| -rw-r--r-- | board/freescale/mpc8572ds/ddr.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/board/freescale/mpc8572ds/ddr.c b/board/freescale/mpc8572ds/ddr.c deleted file mode 100644 index 11ca08d1a0..0000000000 --- a/board/freescale/mpc8572ds/ddr.c +++ /dev/null @@ -1,166 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright 2008 Freescale Semiconductor, Inc. - */ - -#include <common.h> - -#include <fsl_ddr_sdram.h> -#include <fsl_ddr_dimm_params.h> - -struct board_specific_parameters { - u32 n_ranks; - u32 datarate_mhz_high; - u32 clk_adjust; - u32 cpo; - u32 write_data_delay; - u32 force_2t; -}; - -/* - * This table contains all valid speeds we want to override with board - * specific parameters. datarate_mhz_high values need to be in ascending order - * for each n_ranks group. - * - * For DDR2 DIMM, all combinations of clk_adjust and write_data_delay have been - * tested. For RDIMM, clk_adjust = 4 and write_data_delay = 3 is optimized for - * all clocks from 400MT/s to 800MT/s, verified with Kingston KVR800D2D8P6/2G. - * For UDIMM, clk_adjust = 8 and write_delay = 5 is optimized for all clocks - * from 400MT/s to 800MT/s, verified with Micron MT18HTF25672AY-800E1. - * - * CPO value doesn't matter if workaround for errata 111 and 134 enabled. - */ -static const struct board_specific_parameters udimm0[] = { - /* - * memory controller 0 - * num| hi| clk| cpo|wrdata|2T - * ranks| mhz|adjst| | delay| - */ - {2, 333, 8, 7, 5, 0}, - {2, 400, 8, 9, 5, 0}, - {2, 549, 8, 11, 5, 0}, - {2, 680, 8, 10, 5, 0}, - {2, 850, 8, 12, 5, 1}, - {1, 333, 6, 7, 3, 0}, - {1, 400, 6, 9, 3, 0}, - {1, 549, 6, 11, 3, 0}, - {1, 680, 1, 10, 5, 0}, - {1, 850, 1, 12, 5, 0}, - {} -}; - -static const struct board_specific_parameters udimm1[] = { - /* - * memory controller 1 - * num| hi| clk| cpo|wrdata|2T - * ranks| mhz|adjst| | delay| - */ - {2, 333, 8, 7, 5, 0}, - {2, 400, 8, 9, 5, 0}, - {2, 549, 8, 11, 5, 0}, - {2, 680, 8, 11, 5, 0}, - {2, 850, 8, 13, 5, 1}, - {1, 333, 6, 7, 3, 0}, - {1, 400, 6, 9, 3, 0}, - {1, 549, 6, 11, 3, 0}, - {1, 680, 1, 11, 6, 0}, - {1, 850, 1, 13, 6, 0}, - {} -}; - -static const struct board_specific_parameters *udimms[] = { - udimm0, - udimm1, -}; - -static const struct board_specific_parameters rdimm0[] = { - /* - * memory controller 0 - * num| hi| clk| cpo|wrdata|2T - * ranks| mhz|adjst| | delay| - */ - {2, 333, 4, 7, 3, 0}, - {2, 400, 4, 9, 3, 0}, - {2, 549, 4, 11, 3, 0}, - {2, 680, 4, 10, 3, 0}, - {2, 850, 4, 12, 3, 1}, - {} -}; - -static const struct board_specific_parameters rdimm1[] = { - /* - * memory controller 1 - * num| hi| clk| cpo|wrdata|2T - * ranks| mhz|adjst| | delay| - */ - {2, 333, 4, 7, 3, 0}, - {2, 400, 4, 9, 3, 0}, - {2, 549, 4, 11, 3, 0}, - {2, 680, 4, 11, 3, 0}, - {2, 850, 4, 13, 3, 1}, - {} -}; - -static const struct board_specific_parameters *rdimms[] = { - rdimm0, - rdimm1, -}; - -void fsl_ddr_board_options(memctl_options_t *popts, - dimm_params_t *pdimm, - unsigned int ctrl_num) -{ - const struct board_specific_parameters *pbsp, *pbsp_highest = NULL; - ulong ddr_freq; - - if (ctrl_num > 1) { - printf("Wrong parameter for controller number %d", ctrl_num); - return; - } - if (!pdimm->n_ranks) - return; - - if (popts->registered_dimm_en) - pbsp = rdimms[ctrl_num]; - else - pbsp = udimms[ctrl_num]; - - /* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr - * freqency and n_banks specified in board_specific_parameters table. - */ - ddr_freq = get_ddr_freq(0) / 1000000; - while (pbsp->datarate_mhz_high) { - if (pbsp->n_ranks == pdimm->n_ranks) { - if (ddr_freq <= pbsp->datarate_mhz_high) { - popts->clk_adjust = pbsp->clk_adjust; - popts->cpo_override = pbsp->cpo; - popts->write_data_delay = - pbsp->write_data_delay; - popts->twot_en = pbsp->force_2t; - goto found; - } - pbsp_highest = pbsp; - } - pbsp++; - } - - if (pbsp_highest) { - printf("Error: board specific timing not found " - "for data rate %lu MT/s!\n" - "Trying to use the highest speed (%u) parameters\n", - ddr_freq, pbsp_highest->datarate_mhz_high); - popts->clk_adjust = pbsp->clk_adjust; - popts->cpo_override = pbsp->cpo; - popts->write_data_delay = pbsp->write_data_delay; - popts->twot_en = pbsp->force_2t; - } else { - panic("DIMM is not supported by this board"); - } - -found: - /* - * Factors to consider for half-strength driver enable: - * - number of DIMMs installed - */ - popts->half_strength_driver_enable = 0; -} |