diff options
| author | Patrick Rudolph <siro@das-labor.org> | 2016-06-14 18:44:28 +0200 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-06-20 21:44:50 +0200 |
| commit | b7b1b2884fb901ac61b7fde6729f811b2e56dd3e (patch) | |
| tree | 6f1633379349ebd4cd60299596074635d71f39bc /src/northbridge/intel/sandybridge/raminit.c | |
| parent | 7bddd30e948e6c3856336e77221fdbe5ba749453 (diff) | |
nb/intel/sandybridge/raminit: Do code cleanup
Simplify calculation of value.
Tested on Lenovo T520 and DDR3-1600 DIMM (RMT3170eb86e9w16).
Change-Id: I3ecd12c431b46a8d2218f33d7eb3e10de3bcd61d
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/15181
Tested-by: build bot (Jenkins)
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/northbridge/intel/sandybridge/raminit.c')
| -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 15590d1da5..abb7cebcf2 100644 --- a/src/northbridge/intel/sandybridge/raminit.c +++ b/src/northbridge/intel/sandybridge/raminit.c @@ -657,7 +657,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[1] = 7; ctrl->timC_offset[2] = 7; ctrl->reg_c14_offset = 16; - ctrl->reg_5064b0 = 0x218; ctrl->reg_320c_range_threshold = 13; } else if (ctrl->tCK <= TCK_933MHZ) { ctrl->tCK = TCK_933MHZ; @@ -668,7 +667,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[1] = 6; ctrl->timC_offset[2] = 6; ctrl->reg_c14_offset = 14; - ctrl->reg_5064b0 = 0x1d5; ctrl->reg_320c_range_threshold = 15; } else if (ctrl->tCK <= TCK_800MHZ) { ctrl->tCK = TCK_800MHZ; @@ -679,7 +677,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[1] = 5; ctrl->timC_offset[2] = 5; ctrl->reg_c14_offset = 12; - ctrl->reg_5064b0 = 0x193; ctrl->reg_320c_range_threshold = 15; } else if (ctrl->tCK <= TCK_666MHZ) { ctrl->tCK = TCK_666MHZ; @@ -690,7 +687,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[1] = 4; ctrl->timC_offset[2] = 4; ctrl->reg_c14_offset = 10; - ctrl->reg_5064b0 = 0x150; ctrl->reg_320c_range_threshold = 16; } else if (ctrl->tCK <= TCK_533MHZ) { ctrl->tCK = TCK_533MHZ; @@ -701,7 +697,6 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[1] = 3; ctrl->timC_offset[2] = 3; ctrl->reg_c14_offset = 8; - ctrl->reg_5064b0 = 0x10d; ctrl->reg_320c_range_threshold = 17; } else { ctrl->tCK = TCK_400MHZ; @@ -712,10 +707,12 @@ static void dram_timing(ramctr_timing * ctrl) ctrl->timC_offset[1] = 2; ctrl->timC_offset[2] = 2; ctrl->reg_c14_offset = 8; - ctrl->reg_5064b0 = 0xcd; ctrl->reg_320c_range_threshold = 17; } + /* DLL_CONFIG_MDLL_W_TIMER */ + ctrl->reg_5064b0 = (128000 / ctrl->tCK) + 3; + val32 = (1000 << 8) / ctrl->tCK; printk(BIOS_DEBUG, "Selected DRAM frequency: %u MHz\n", val32); |