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authorAngel Pons <th3fanbus@gmail.com>2020-09-18 00:52:26 +0200
committerPatrick Georgi <pgeorgi@google.com>2021-02-18 10:12:43 +0000
commit0a20872de0b0de6354fa3164c998619b3218dd9f (patch)
treef7b7807217cd875ddf2858439ab1ba1dafe74849
parentfe276fb250df01aadc85ca8a6d6d0091bcf7dc93 (diff)
nb/intel/sandybridge: Use 133 MHz ref clock for DDR3-2400
The 100 MHz reference clock seems to be unstable when using high multipliers. Use the 133 MHz reference clock instead. Change-Id: I400e4f91776306d54d818fa249d7a845020ac37b Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45503 Reviewed-by: Patrick Rudolph <siro@das-labor.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/northbridge/intel/sandybridge/raminit_native.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit_native.c b/src/northbridge/intel/sandybridge/raminit_native.c
index 4c1fb8fe17..698db513bd 100644
--- a/src/northbridge/intel/sandybridge/raminit_native.c
+++ b/src/northbridge/intel/sandybridge/raminit_native.c
@@ -218,7 +218,7 @@ static void normalize_tclk(ramctr_timing *ctrl, bool ref_100mhz_support)
{
if (ctrl->tCK <= TCK_1200MHZ) {
ctrl->tCK = TCK_1200MHZ;
- ctrl->base_freq = 100;
+ ctrl->base_freq = 133;
} else if (ctrl->tCK <= TCK_1100MHZ) {
ctrl->tCK = TCK_1100MHZ;
ctrl->base_freq = 100;