diff options
Diffstat (limited to 'board/freescale/p2020ds/ddr.c')
| -rw-r--r-- | board/freescale/p2020ds/ddr.c | 56 |
1 files changed, 27 insertions, 29 deletions
diff --git a/board/freescale/p2020ds/ddr.c b/board/freescale/p2020ds/ddr.c index b9c0cb2..30d640f 100644 --- a/board/freescale/p2020ds/ddr.c +++ b/board/freescale/p2020ds/ddr.c @@ -12,7 +12,7 @@ #include <asm/fsl_ddr_sdram.h> #include <asm/fsl_ddr_dimm_params.h> -static void get_spd(ddr3_spd_eeprom_t *spd, unsigned char i2c_address) +static void get_spd(generic_spd_eeprom_t *spd, unsigned char i2c_address) { i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr3_spd_eeprom_t)); } @@ -22,7 +22,7 @@ unsigned int fsl_ddr_get_mem_data_rate(void) return get_ddr_freq(0); } -void fsl_ddr_get_spd(ddr3_spd_eeprom_t *ctrl_dimms_spd, +void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd, unsigned int ctrl_num) { unsigned int i; @@ -51,27 +51,26 @@ typedef struct { * cpo 2-0x1E (30) */ - -/* XXX: these values need to be checked for all interleaving modes. */ -/* XXX: No reliable dual-rank 800 MHz setting has been found. It may - * seem reliable, but errors will appear when memory intensive - * program is run. */ -/* XXX: Single rank at 800 MHz is OK. */ const board_specific_parameters_t board_specific_parameters[][20] = { { /* memory controller 0 */ /* lo| hi| num| clk| cpo|wrdata|2T */ /* mhz| mhz|ranks|adjst| | delay| */ - { 0, 333, 2, 6, 7, 3, 0}, - {334, 400, 2, 6, 9, 3, 0}, - {401, 549, 2, 6, 11, 3, 0}, - {550, 680, 2, 1, 10, 5, 0}, - {681, 850, 2, 1, 12, 5, 1}, - { 0, 333, 1, 6, 7, 3, 0}, - {334, 400, 1, 6, 9, 3, 0}, - {401, 549, 1, 6, 11, 3, 0}, - {550, 680, 1, 1, 10, 5, 0}, - {681, 850, 1, 1, 12, 5, 0} +#ifdef CONFIG_FSL_DDR2 + { 0, 333, 2, 4, 0x1f, 2, 0}, + {334, 400, 2, 4, 0x1f, 2, 0}, + {401, 549, 2, 4, 0x1f, 2, 0}, + {550, 680, 2, 4, 0x1f, 3, 0}, + {681, 850, 2, 4, 0x1f, 4, 0}, + { 0, 333, 1, 4, 0x1f, 2, 0}, + {334, 400, 1, 4, 0x1f, 2, 0}, + {401, 549, 1, 4, 0x1f, 2, 0}, + {550, 680, 1, 4, 0x1f, 3, 0}, + {681, 850, 1, 4, 0x1f, 4, 0} +#else + { 0, 850, 2, 4, 0x1f, 4, 0}, + { 0, 850, 1, 4, 0x1f, 4, 0} +#endif }, }; @@ -92,18 +91,8 @@ void fsl_ddr_board_options(memctl_options_t *popts, * odt_wr_cfg to 3 for the even CS, 0 for the odd CS. */ for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { - if (i&1) { /* odd CS */ popts->cs_local_opts[i].odt_rd_cfg = 0; - popts->cs_local_opts[i].odt_wr_cfg = 0; - } else { /* even CS */ - if (CONFIG_DIMM_SLOTS_PER_CTLR == 1) { - popts->cs_local_opts[i].odt_rd_cfg = 0; - popts->cs_local_opts[i].odt_wr_cfg = 4; - } else if (CONFIG_DIMM_SLOTS_PER_CTLR == 2) { - popts->cs_local_opts[i].odt_rd_cfg = 3; - popts->cs_local_opts[i].odt_wr_cfg = 3; - } - } + popts->cs_local_opts[i].odt_wr_cfg = 1; } /* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr @@ -127,4 +116,13 @@ void fsl_ddr_board_options(memctl_options_t *popts, * - number of DIMMs installed */ popts->half_strength_driver_enable = 0; + popts->wrlvl_en = 1; + /* Write leveling override */ + popts->wrlvl_override = 1; + popts->wrlvl_sample = 0xa; + popts->wrlvl_start = 0x7; + /* Rtt and Rtt_WR override */ + popts->rtt_override = 1; + popts->rtt_override_value = DDR3_RTT_120_OHM; + popts->rtt_wr_override_value = 0; /* Rtt_WR= dynamic ODT off */ } |