tree dfa478b2baafea31e3c2e1f597afdd64f4e7caec
parent 01a18eec8c6e4ec8f21a548ddf9f08a78ad4d6ef
author Ravi Sarawadi <ravishankar.sarawadi@intel.com> 1493173858 -0700
committer ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> 1493409575 +0000

UPSTREAM: soc/intel/apollolake: Update default LPDDR4 CA ODT config

Update default ODT config to have correct CA ODT settings as the
current defaults are incorrect for all the current apollolake designs.
All the current designs pull both A and B channels' LPDDR4 modules' ODT
pins to 1.1V. Therefore, the correct impedance setting needs to be
applied.

In order for the settings to take effect one needs to clear the
memory training cache in deployed systems. Trigger this by bumping
the memory setting version for the SoC.

If needed in the future support for allowing the override of this
setting from the mainboard should be straight forward. It's just not
necessary at this time.

BUG=b:37687843
TEST=BAT test, warm, reboot, S3 cycle test

Change-Id: Ie359847db7391798b2dce5301addecb3d95c88cc
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Original-Commit-Id: a3d13fbd699e82781b436c88941c6d8d83133400
Original-Change-Id: I9a2f7636b46492a9d08472a0752cdf1f86a72e15
Original-Signed-off-by: Ravi Sarawadi <ravishankar.sarawadi@intel.com>
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://review.coreboot.org/19397
Original-Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-by: Furquan Shaikh <furquan@google.com>
Original-Tested-by: build bot (Jenkins)
Reviewed-on: https://chromium-review.googlesource.com/490512
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Aaron Durbin <adurbin@chromium.org>
Tested-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 6ca08e91e3c0813a21eebc8dcda3e98d263a2bcb)
Reviewed-on: https://chromium-review.googlesource.com/490517
Reviewed-by: YH Lin <yueherngl@chromium.org>
Commit-Queue: YH Lin <yueherngl@chromium.org>
Tested-by: YH Lin <yueherngl@chromium.org>