PD alternate mode is covered in tcpc interface. So tcpci_tcpm_init()
doesn't reset HPD. If keeping HDMI/DP type-C cable connected, doing
sysjump sets HPD signal to high while it's already high(this high comes
from previous state), then OS doesn't output to HDMI/DP monitor.
Reef Type-C port 1 follows TCPCI and has this issue.
BUG=chrome-os-partner:57689
BRANCH=none
TEST=Connect HDMI/DP type-C dongle, boot up system, OS detects HDMI/DP
monitor and extends screen to it; in console doing "sysjump RO"
or "sysjump RW", display goes out then comes back.
Change-Id: I12239a86490f29d0123fe8bad1b813d3be28d041
Signed-off-by: li feng <li1.feng@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/398444
Commit-Ready: Li1 Feng <li1.feng@intel.com>
Tested-by: Li1 Feng <li1.feng@intel.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
8b0aac61dd