diff options
| author | Patrick Rudolph <siro@das-labor.org> | 2016-11-25 15:40:49 +0100 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-04-04 18:53:05 +0200 |
| commit | cb7d6a19bb4fafaeb52e0ad3b6683dc3ac5e242e (patch) | |
| tree | 2c8dc7dc01f97018a00bb79d6ec63db7153b84ba /src/northbridge/intel | |
| parent | 413edc8f7a0cfbdee45077ecd8717e53e4124d47 (diff) | |
nb/intel/sandybridge/raminit: Add default values
Add 100 Mhz reflock default values for Ivybridge.
Some values are extracted from MRC, those marked as
guessed needs to be verified.
Tested on Lenovo T430 (Intel IvyBridge) and DDR3-1800.
Change-Id: Ife7f899b5fea02827ad998e9e8ab10ecaef61191
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/17609
Tested-by: build bot (Jenkins)
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/northbridge/intel')
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit_ivy.c | 51 |
1 files changed, 48 insertions, 3 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit_ivy.c b/src/northbridge/intel/sandybridge/raminit_ivy.c index 5cdfe8971b..97bf50b52d 100644 --- a/src/northbridge/intel/sandybridge/raminit_ivy.c +++ b/src/northbridge/intel/sandybridge/raminit_ivy.c @@ -292,10 +292,28 @@ static void dram_timing(ramctr_timing * ctrl) u8 val; u32 val32; - /* Maximum supported DDR3 frequency is 1066MHz (DDR3 2133) so make sure - * we cap it if we have faster DIMMs. + /* Maximum supported DDR3 frequency is 1400MHz (DDR3 2800). + * We cap it at 1200Mhz (DDR3 2400). * Then, align it to the closest JEDEC standard frequency */ - if (ctrl->tCK <= TCK_1066MHZ) { + if (ctrl->tCK <= TCK_1200MHZ) { + ctrl->tCK = TCK_1200MHZ; + ctrl->edge_offset[0] = 18; //XXX: guessed + ctrl->edge_offset[1] = 8; + ctrl->edge_offset[2] = 8; + ctrl->timC_offset[0] = 20; //XXX: guessed + ctrl->timC_offset[1] = 8; + ctrl->timC_offset[2] = 8; + ctrl->reg_320c_range_threshold = 10; + } else if (ctrl->tCK <= TCK_1100MHZ) { + ctrl->tCK = TCK_1100MHZ; + ctrl->edge_offset[0] = 17; //XXX: guessed + ctrl->edge_offset[1] = 7; + ctrl->edge_offset[2] = 7; + ctrl->timC_offset[0] = 19; //XXX: guessed + ctrl->timC_offset[1] = 7; + ctrl->timC_offset[2] = 7; + ctrl->reg_320c_range_threshold = 13; + } else if (ctrl->tCK <= TCK_1066MHZ) { ctrl->tCK = TCK_1066MHZ; ctrl->edge_offset[0] = 16; ctrl->edge_offset[1] = 7; @@ -304,6 +322,15 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[1] = 7; ctrl->timC_offset[2] = 7; ctrl->reg_320c_range_threshold = 13; + } else if (ctrl->tCK <= TCK_1000MHZ) { + ctrl->tCK = TCK_1000MHZ; + ctrl->edge_offset[0] = 15; //XXX: guessed + ctrl->edge_offset[1] = 6; + ctrl->edge_offset[2] = 6; + ctrl->timC_offset[0] = 17; //XXX: guessed + ctrl->timC_offset[1] = 6; + ctrl->timC_offset[2] = 6; + ctrl->reg_320c_range_threshold = 13; } else if (ctrl->tCK <= TCK_933MHZ) { ctrl->tCK = TCK_933MHZ; ctrl->edge_offset[0] = 14; @@ -313,6 +340,15 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[1] = 6; ctrl->timC_offset[2] = 6; ctrl->reg_320c_range_threshold = 15; + } else if (ctrl->tCK <= TCK_900MHZ) { + ctrl->tCK = TCK_900MHZ; + ctrl->edge_offset[0] = 14; //XXX: guessed + ctrl->edge_offset[1] = 6; + ctrl->edge_offset[2] = 6; + ctrl->timC_offset[0] = 15; //XXX: guessed + ctrl->timC_offset[1] = 6; + ctrl->timC_offset[2] = 6; + ctrl->reg_320c_range_threshold = 12; } else if (ctrl->tCK <= TCK_800MHZ) { ctrl->tCK = TCK_800MHZ; ctrl->edge_offset[0] = 13; @@ -322,6 +358,15 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[1] = 5; ctrl->timC_offset[2] = 5; ctrl->reg_320c_range_threshold = 15; + } else if (ctrl->tCK <= TCK_700MHZ) { + ctrl->tCK = TCK_700MHZ; + ctrl->edge_offset[0] = 13; //XXX: guessed + ctrl->edge_offset[1] = 5; + ctrl->edge_offset[2] = 5; + ctrl->timC_offset[0] = 14; //XXX: guessed + ctrl->timC_offset[1] = 5; + ctrl->timC_offset[2] = 5; + ctrl->reg_320c_range_threshold = 16; } else if (ctrl->tCK <= TCK_666MHZ) { ctrl->tCK = TCK_666MHZ; ctrl->edge_offset[0] = 10; |