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-rw-r--r--src/northbridge/intel/sandybridge/raminit_common.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit_common.c b/src/northbridge/intel/sandybridge/raminit_common.c
index 6f02998433..d6a8aa550a 100644
--- a/src/northbridge/intel/sandybridge/raminit_common.c
+++ b/src/northbridge/intel/sandybridge/raminit_common.c
@@ -170,15 +170,16 @@ void dram_timing_regs(ramctr_timing *ctrl)
/* Other parameters */
const union tc_othp_reg tc_othp = {
- .tXPDLL = ctrl->tXPDLL,
- .tXP = ctrl->tXP,
+ .tXPDLL = MIN(ctrl->tXPDLL, 31),
+ .tXP = MIN(ctrl->tXP, 7),
.tAONPD = ctrl->tAONPD,
.tCPDED = 2,
.tPRPDEN = 1,
};
/*
- * If tXP and tXPDLL are very high, we need to increase them by one.
+ * If tXP and tXPDLL are very high, they no longer fit in the bitfields
+ * of the TC_OTHP register. If so, we set bits in TC_DTP to compensate.
* This can only happen on Ivy Bridge, and when overclocking the RAM.
*/
const union tc_dtp_reg tc_dtp = {