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>

0 files changed, 0 insertions, 0 deletions