diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2020-12-12 16:22:18 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2020-12-25 21:41:17 +0000 |
| commit | 3170e9c0ef90dcbfb0b2e695fec3bd9d142d1db0 (patch) | |
| tree | b85200078ab5d0cff5159228a411cd1880d79b20 /src/northbridge/intel/sandybridge/raminit.c | |
| parent | e0183d6540b8e8a8281f4317b881dfbc57f12bc4 (diff) | |
nb/intel/sandybridge: Allow to ignore XMP voltage
Native raminit only supports 1.5V operation, but there are DIMMs which
request 1.65V operation in XMP profiles. Add an option to force XMP to
be used when the requested voltage isn't supported, which will run the
DIMMs at 1.5V with XMP timings. Consider this to be overclocking.
Change-Id: I64bfac8f72dadf662ceadfc7998daf26edf5a710
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48614
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Diffstat (limited to 'src/northbridge/intel/sandybridge/raminit.c')
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit.c b/src/northbridge/intel/sandybridge/raminit.c index 3077c0ae8f..8acfb98b57 100644 --- a/src/northbridge/intel/sandybridge/raminit.c +++ b/src/northbridge/intel/sandybridge/raminit.c @@ -200,7 +200,12 @@ static void dram_find_spds_ddr3(spd_raw_data *spd, ramctr_timing *ctrl) /* TODO: Support DDR3 voltages other than 1500mV */ printram("XMP profile's requested %u mV is unsupported.\n", dimm->voltage); - spd_decode_ddr3(dimm, spd[spd_slot]); + + if (CONFIG(NATIVE_RAMINIT_IGNORE_XMP_REQUESTED_VOLTAGE)) + printk(BIOS_WARNING, + "XMP requested voltage will be ignored.\n"); + else + spd_decode_ddr3(dimm, spd[spd_slot]); } /* Fill in CRC16 for MRC cache */ |