diff options
| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2016-04-22 22:16:45 -0500 |
|---|---|---|
| committer | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2016-04-25 19:51:55 +0200 |
| commit | 4488d7371a2b05e8f1f6952cc969821dfcd4ce42 (patch) | |
| tree | 97d8f63aa6c262930708ce88ab2dbe1e4ec8088b /src/northbridge/amd/amdmct/mct_ddr3 | |
| parent | 7501b6c285cb8b4f75d3197f8571127a0ad9d504 (diff) | |
nb/amd/mct_ddr3: Scale lane delays for each DIMM after MEMCLK change
When more than one DIMM is installed on a DCT, only the first DIMM
delay values are scaled to the new memory clock frequency after a
memory clock change during write leveling.
Store the previous memory clock of each DIMM during write leveling
to ensure that every DIMM has its delay values rescaled.
Change-Id: I56e816d3d3256925598219d92783246f5f4ab567
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/14479
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/northbridge/amd/amdmct/mct_ddr3')
| -rw-r--r-- | src/northbridge/amd/amdmct/mct_ddr3/mhwlc_d.c | 4 | ||||
| -rw-r--r-- | src/northbridge/amd/amdmct/mct_ddr3/mwlc_d.h | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mhwlc_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mhwlc_d.c index 9702126462..6e1c850713 100644 --- a/src/northbridge/amd/amdmct/mct_ddr3/mhwlc_d.c +++ b/src/northbridge/amd/amdmct/mct_ddr3/mhwlc_d.c @@ -1212,7 +1212,7 @@ void procConfig(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstat, ui ((pDCTData->WLGrossDelayPrevPass[lane_count*dimm+ByteLane] & 0x1f) << 5); SeedTotalPreScaling[ByteLane] = (SeedTotal[ByteLane] - RegisterDelay - (0x20 * WrDqDqsEarly)); SeedTotal[ByteLane] = (int32_t) (RegisterDelay + ((((int64_t) SeedTotalPreScaling[ByteLane]) * - fam15h_freq_tab[MemClkFreq] * 100) / (fam15h_freq_tab[pDCTData->WLPrevMemclkFreq] * 100))); + fam15h_freq_tab[MemClkFreq] * 100) / (fam15h_freq_tab[pDCTData->WLPrevMemclkFreq[dimm]] * 100))); } /* Generate register values from seeds */ @@ -1326,7 +1326,7 @@ void procConfig(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstat, ui } } - pDCTData->WLPrevMemclkFreq = MemClkFreq; + pDCTData->WLPrevMemclkFreq[dimm] = MemClkFreq; setWLByteDelay(pDCTstat, dct, ByteLane, dimm, 0, pass, lane_count); } diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mwlc_d.h b/src/northbridge/amd/amdmct/mct_ddr3/mwlc_d.h index 28359a13c0..ca04d28a0a 100644 --- a/src/northbridge/amd/amdmct/mct_ddr3/mwlc_d.h +++ b/src/northbridge/amd/amdmct/mct_ddr3/mwlc_d.h @@ -145,7 +145,7 @@ typedef struct _sDCTStruct int32_t WLCriticalGrossDelayFirstPass; int32_t WLCriticalGrossDelayPrevPass; int32_t WLCriticalGrossDelayFinalPass; - uint16_t WLPrevMemclkFreq; + uint16_t WLPrevMemclkFreq[MAX_TOTAL_DIMMS]; u16 RegMan1Present; u8 DimmPresent[MAX_TOTAL_DIMMS];/* Indicates which DIMMs are present */ /* from Total Number of DIMMs(per Node)*/ |