[coreboot-gerrit] Patch merged into coreboot/master: fsp_baytrail: Fix a possible hanging DisplayPort
gerrit at coreboot.org
gerrit at coreboot.org
Thu Feb 25 15:16:49 CET 2016
the following patch was just integrated into master:
commit 1c3b1112fa2dbdd66b0470224715dc6da254ce62
Author: Werner Zeh <werner.zeh at siemens.com>
Date: Fri Feb 19 10:50:38 2016 +0100
fsp_baytrail: Fix a possible hanging DisplayPort
On some devices it can happen that DisplayPort TX lanes
do not work properly if the power gate setup is omitted.
If that happens, DisplayPort training will fail and therefore
DisplayPort channel will not work. Both ports are affected.
It seems that not every CPU shows this effect
and those that are affected tend to fail more often in a cold
environment.
With this fix a board that originally shows this failure
was running for over 1000 power cycles without issues.
Change-Id: Ia266674490a1bee63a85b38d1dc949dcdf683cbc
Signed-off-by: Werner Zeh <werner.zeh at siemens.com>
Reviewed-on: https://review.coreboot.org/13743
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth at google.com>
Reviewed-by: Paul Menzel <paulepanter at users.sourceforge.net>
See https://review.coreboot.org/13743 for details.
-gerrit
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