diff options
| author | Patrick Rudolph <siro@das-labor.org> | 2016-06-14 20:07:32 +0200 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-06-20 21:55:54 +0200 |
| commit | d4c53e3fdd29612641ae402b57495401e67a414e (patch) | |
| tree | 99ddd69be14399ba860bb3a52e2c970909d8a801 /src | |
| parent | 4307835d264e9e4db3e3a0e54683f147f2e89d5a (diff) | |
nb/intel/sandybridge/raminit: Do code cleanup
Calculate the value from current DDR frequency.
Tested on Lenovo T520 and DDR3-1600 DIMM (RMT3170eb86e9w16).
Change-Id: I57ffbfeb291fc2fede278d18527993e7432e9bd8
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/15184
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Diffstat (limited to 'src')
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit.c b/src/northbridge/intel/sandybridge/raminit.c index abb7cebcf2..ba03bbbc92 100644 --- a/src/northbridge/intel/sandybridge/raminit.c +++ b/src/northbridge/intel/sandybridge/raminit.c @@ -656,7 +656,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[0] = 18; ctrl->timC_offset[1] = 7; ctrl->timC_offset[2] = 7; - ctrl->reg_c14_offset = 16; ctrl->reg_320c_range_threshold = 13; } else if (ctrl->tCK <= TCK_933MHZ) { ctrl->tCK = TCK_933MHZ; @@ -666,7 +665,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[0] = 15; ctrl->timC_offset[1] = 6; ctrl->timC_offset[2] = 6; - ctrl->reg_c14_offset = 14; ctrl->reg_320c_range_threshold = 15; } else if (ctrl->tCK <= TCK_800MHZ) { ctrl->tCK = TCK_800MHZ; @@ -676,7 +674,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[0] = 14; ctrl->timC_offset[1] = 5; ctrl->timC_offset[2] = 5; - ctrl->reg_c14_offset = 12; ctrl->reg_320c_range_threshold = 15; } else if (ctrl->tCK <= TCK_666MHZ) { ctrl->tCK = TCK_666MHZ; @@ -686,7 +683,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[0] = 11; ctrl->timC_offset[1] = 4; ctrl->timC_offset[2] = 4; - ctrl->reg_c14_offset = 10; ctrl->reg_320c_range_threshold = 16; } else if (ctrl->tCK <= TCK_533MHZ) { ctrl->tCK = TCK_533MHZ; @@ -696,7 +692,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[0] = 9; ctrl->timC_offset[1] = 3; ctrl->timC_offset[2] = 3; - ctrl->reg_c14_offset = 8; ctrl->reg_320c_range_threshold = 17; } else { ctrl->tCK = TCK_400MHZ; @@ -706,10 +701,12 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[0] = 6; ctrl->timC_offset[1] = 2; ctrl->timC_offset[2] = 2; - ctrl->reg_c14_offset = 8; ctrl->reg_320c_range_threshold = 17; } + /* Initial phase between CLK/CMD pins */ + ctrl->reg_c14_offset = (256000 / ctrl->tCK) / 66; + /* DLL_CONFIG_MDLL_W_TIMER */ ctrl->reg_5064b0 = (128000 / ctrl->tCK) + 3; |