tree 9a065aaf54d471fc39b2005757cf449ecdaa2e82
parent 011661cbfb88187b3ddbcab0ecdce978000b1c54
author Angel Pons <th3fanbus@gmail.com> 1605628441 +0100
committer Angel Pons <th3fanbus@gmail.com> 1605832566 +0000

nb/intel/sandybridge: Restore nominal Vref for current channel

After aggressive read training, program nominal Vref for the current
channel, not only channel 0. This simple mistake can easily degrade
memory margins, especially when running at high speed (overclocking).

Tested on Asus P8H61-M PRO, still boots.

Change-Id: I12630fe33c5c786c8ec131c45c27180c3887d354
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47680
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>