the following patch was just integrated into master: commit 64a23d670690b2e30d2fa458fbf882d6e94a9a04 Author: Aaron Durbin adurbin@chromium.org Date: Wed Oct 30 17:07:46 2013 -0500
baytrail: HDA function disable workaround
Parts of the audio path are common between the HDA and LPE. However, those parts are power-controlled by the D-state of the HDA device. Therefore, one cannot put the HDA into D3Hot because those audio paths will be shutdown.
BUG=chrome-os-partner:22871 BRANCH=None TEST=Built and booted through depthcharge. Disabling HDA still causes a shutdown when performing warm reset, however I was able to verify the magic sequence was being performed.
Change-Id: I3b01356d85a4b7b902bd896b8eb9e7bc509fcc42 Signed-off-by: Aaron Durbin adurbin@chromium.org Reviewed-on: https://chromium-review.googlesource.com/175491 Reviewed-by: Duncan Laurie dlaurie@chromium.org
See http://review.coreboot.org/4926 for details.
-gerrit