diff options
| author | Matt DeVillier <matt.devillier@puri.sm> | 2021-02-15 11:23:58 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-02-17 10:35:48 +0000 |
| commit | 1174dad2e26308b5d3d790756ac0cd0649646dfb (patch) | |
| tree | 3fed236becad9b9afc44fb206693d51b39816291 | |
| parent | 63d2008308ce485d5a1c37f55496b63a5361cdb8 (diff) | |
mb/purism/librem_mini: Enable DRAM Refresh2X
Enable Refresh2X to mitigate RAM corruption during long
(> 1hr) periods of S3/suspend, which leads to failure to
successfully resume from S3. Unknown if an issue with all
DRAM types, but tested w/Kingston KVR24S17D8 16GiB DDR4 SODIMMs.
Test: Build/boot Librem Mini v1/v2, put device in suspend,
wait > 1hr, ensure resume from S3 successful 100% of the time.
Change-Id: Ie8e3ebbb1ebdcd98813b5f36f580a235712d2f97
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50756
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/mainboard/purism/librem_cnl/variants/librem_mini/variant.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mainboard/purism/librem_cnl/variants/librem_mini/variant.c b/src/mainboard/purism/librem_cnl/variants/librem_mini/variant.c index 9d7e27fd3e..4f415c4e23 100644 --- a/src/mainboard/purism/librem_cnl/variants/librem_mini/variant.c +++ b/src/mainboard/purism/librem_cnl/variants/librem_mini/variant.c @@ -9,4 +9,7 @@ void variant_memory_init_params(FSP_M_CONFIG *mem_cfg) mem_cfg->PchSataHsioRxGen3EqBoostMagEnable[2] = 1; mem_cfg->PchSataHsioRxGen3EqBoostMag[0] = 2; mem_cfg->PchSataHsioRxGen3EqBoostMag[2] = 1; + + /* Enable Refresh2X to mitigate S3 resume issues */ + mem_cfg->Refresh2X = 1; } |