- Optimize UDIMM parameters for whole range from 1500MT/s to 2140MT/s. - Remove unused patameters: 'cpo', 'wrdata delay', '2T', which are unrelated to DDR3/3L.
Signed-off-by: Shengzhou Liu Shengzhou.Liu@freescale.com --- Against master branch of git://git.denx.de/u-boot-mpc85xx.git v3: remain old RDIMM code without updating for now. v2: throw an error in case of RDIMM.
board/freescale/t2080qds/ddr.c | 11 ++----- board/freescale/t2080qds/ddr.h | 65 +++++++++++++++++------------------------- 2 files changed, 28 insertions(+), 48 deletions(-)
diff --git a/board/freescale/t2080qds/ddr.c b/board/freescale/t2080qds/ddr.c index 5db5d21..4a4d570 100644 --- a/board/freescale/t2080qds/ddr.c +++ b/board/freescale/t2080qds/ddr.c @@ -24,7 +24,7 @@ void fsl_ddr_board_options(memctl_options_t *popts, const struct board_specific_parameters *pbsp, *pbsp_highest = NULL; ulong ddr_freq;
- if (ctrl_num > 2) { + if (ctrl_num > 1) { printf("Not supported controller number %d\n", ctrl_num); return; } @@ -40,8 +40,7 @@ void fsl_ddr_board_options(memctl_options_t *popts, else pbsp = udimms[0];
- - /* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr + /* Get clk_adjust, wrlvl_start, wrlvl_ctl, according to the board ddr * freqency and n_banks specified in board_specific_parameters table. */ ddr_freq = get_ddr_freq(0) / 1000000; @@ -49,9 +48,6 @@ void fsl_ddr_board_options(memctl_options_t *popts, if (pbsp->n_ranks == pdimm->n_ranks && (pdimm->rank_density >> 30) >= pbsp->rank_gb) { if (ddr_freq <= pbsp->datarate_mhz_high) { - popts->cpo_override = pbsp->cpo; - popts->write_data_delay = - pbsp->write_data_delay; popts->clk_adjust = pbsp->clk_adjust; popts->wrlvl_start = pbsp->wrlvl_start; popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2; @@ -69,13 +65,10 @@ void fsl_ddr_board_options(memctl_options_t *popts, printf("for data rate %lu MT/s\n", ddr_freq); printf("Trying to use the highest speed (%u) parameters\n", pbsp_highest->datarate_mhz_high); - popts->cpo_override = pbsp_highest->cpo; - popts->write_data_delay = pbsp_highest->write_data_delay; popts->clk_adjust = pbsp_highest->clk_adjust; popts->wrlvl_start = pbsp_highest->wrlvl_start; popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2; popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3; - popts->twot_en = pbsp_highest->force_2t; } else { panic("DIMM is not supported by this board"); } diff --git a/board/freescale/t2080qds/ddr.h b/board/freescale/t2080qds/ddr.h index 964eaad..5828596 100644 --- a/board/freescale/t2080qds/ddr.h +++ b/board/freescale/t2080qds/ddr.h @@ -14,9 +14,6 @@ struct board_specific_parameters { u32 wrlvl_start; u32 wrlvl_ctl_2; u32 wrlvl_ctl_3; - u32 cpo; - u32 write_data_delay; - u32 force_2t; };
/* @@ -28,58 +25,48 @@ struct board_specific_parameters { static const struct board_specific_parameters udimm0[] = { /* * memory controller 0 - * num| hi| rank| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T - * ranks| mhz| GB |adjst| start | ctl2 | ctl3 | |delay | + * num| hi| rank| clk| wrlvl | wrlvl | wrlvl | + * ranks| mhz| GB |adjst| start | ctl2 | ctl3 | */ - {2, 1350, 4, 4, 8, 0x0809090b, 0x0c0c0d0a, 0xff, 2, 0}, - {2, 1350, 0, 5, 7, 0x0709090b, 0x0c0c0d09, 0xff, 2, 0}, - {2, 1666, 4, 4, 8, 0x080a0a0d, 0x0d10100b, 0xff, 2, 0}, - {2, 1666, 0, 5, 7, 0x080a0a0c, 0x0d0d0e0a, 0xff, 2, 0}, - {2, 1900, 0, 4, 8, 0x090a0b0e, 0x0f11120c, 0xff, 2, 0}, - {2, 2140, 0, 4, 8, 0x090a0b0e, 0x0f11120c, 0xff, 2, 0}, - {1, 1350, 0, 5, 8, 0x0809090b, 0x0c0c0d0a, 0xff, 2, 0}, - {1, 1700, 0, 5, 8, 0x080a0a0c, 0x0c0d0e0a, 0xff, 2, 0}, - {1, 1800, 2, 5, 6, 0x06070709, 0x110a0b08, 0xff, 2, 0}, - {1, 1866, 2, 4, 6, 0x06060708, 0x09090a07, 0xff, 2, 0}, - {1, 1900, 2, 4, 6, 0x06060708, 0x09090a07, 0xff, 2, 0}, - {1, 2000, 2, 4, 8, 0x090a0b0d, 0x0e0f110b, 0xff, 2, 0}, - {1, 2133, 2, 4, 8, 0x090a0b0d, 0x0e0f110b, 0xff, 2, 0}, + {2, 1500, 2, 5, 7, 0x0808090a, 0x0b0c0c0a}, + {2, 1500, 2, 5, 6, 0x07070809, 0x0a0b0b09}, + {2, 1700, 2, 5, 8, 0x090b0b0d, 0x0d0e0f0b}, + {2, 1700, 2, 4, 7, 0x080a0a0c, 0x0c0d0e0a}, + {2, 2140, 2, 5, 9, 0x0a0b0c0e, 0x0f10120c}, + {2, 2140, 2, 4, 8, 0x090a0b0d, 0x0e0f110b}, + {1, 1500, 2, 5, 7, 0x0808090a, 0x0b0c0c0a}, + {1, 1500, 2, 5, 6, 0x07070809, 0x0a0b0b09}, + {1, 1700, 2, 5, 8, 0x090b0b0d, 0x0d0e0f0b}, + {1, 1700, 2, 4, 7, 0x080a0a0c, 0x0c0d0e0a}, + {1, 2140, 2, 5, 9, 0x0a0b0c0e, 0x0f10120c}, + {1, 2140, 2, 4, 8, 0x090a0b0d, 0x0e0f110b}, {} };
static const struct board_specific_parameters rdimm0[] = { /* * memory controller 0 - * num| hi| rank| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T - * ranks| mhz| GB |adjst| start | ctl2 | ctl3 | |delay | + * num| hi| rank| clk| wrlvl | wrlvl | wrlvl | + * ranks| mhz| GB |adjst| start | ctl2 | ctl3 | */ - {4, 1350, 0, 5, 9, 0x08070605, 0x06070806, 0xff, 2, 0}, - {4, 1666, 0, 5, 11, 0x0a080706, 0x07090906, 0xff, 2, 0}, - {4, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07, 0xff, 2, 0}, - {2, 1350, 0, 5, 9, 0x08070605, 0x06070806, 0xff, 2, 0}, - {2, 1666, 0, 5, 11, 0x0a090806, 0x08090a06, 0xff, 2, 0}, - {2, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07, 0xff, 2, 0}, - {1, 1350, 0, 5, 9, 0x08070605, 0x06070806, 0xff, 2, 0}, - {1, 1666, 0, 5, 11, 0x0a090806, 0x08090a06, 0xff, 2, 0}, - {1, 2140, 0, 4, 12, 0x0b090807, 0x080a0b07, 0xff, 2, 0}, + /* TODO: need tuning these parameters if RDIMM is used */ + {4, 1350, 0, 5, 9, 0x08070605, 0x06070806}, + {4, 1666, 0, 5, 11, 0x0a080706, 0x07090906}, + {4, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07}, + {2, 1350, 0, 5, 9, 0x08070605, 0x06070806}, + {2, 1666, 0, 5, 11, 0x0a090806, 0x08090a06}, + {2, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07}, + {1, 1350, 0, 5, 9, 0x08070605, 0x06070806}, + {1, 1666, 0, 5, 11, 0x0a090806, 0x08090a06}, + {1, 2140, 0, 4, 12, 0x0b090807, 0x080a0b07}, {} };
-/* - * The three slots have slightly different timing. The center values are good - * for all slots. We use identical speed tables for them. In future use, if - * DIMMs require separated tables, make more entries as needed. - */ static const struct board_specific_parameters *udimms[] = { udimm0, };
-/* - * The three slots have slightly different timing. See comments above. - */ static const struct board_specific_parameters *rdimms[] = { rdimm0, }; - - #endif