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| author | Edward O'Callaghan <quasisec@google.com> | 2020-01-20 18:21:13 +1100 |
|---|---|---|
| committer | Edward O'Callaghan <quasisec@chromium.org> | 2020-02-07 03:33:43 +0000 |
| commit | b40c6009141e2c6a6f886584ea6d5b7e4fe69347 (patch) | |
| tree | 5d6b5f636398cea92bce4becb10e4bd70afe0436 /src/cpu | |
| parent | 2806ec971e11cccee86927ddde6ace3a34319cfb (diff) | |
mainboard/hatch: Fix puff DP output on cold boots
Wait for HPD DP unless HDMI is plugged.
Some Type-C monitors do not immediately assert HPD. If we continue
to boot without HPD asserted, Depthcharge fails to show pictures
on a monitor even if HPD is asserted later.
Similar to that of b:72387533 however our DP&HDMI are beind a MST.
See commit d182b63347c744c on how this was done for mainboard/fizz.
BUG=b:147992492
BRANCH=none
TEST=Verify firmware screen is displayed even when a type-c monitor
does not immediately assert HPD. Verify if HDMI monitor is connected,
AP does not wait (and firmware screen is displayed on HDMI monitor).
Change-Id: I19d40056e58f1737f87fd07d62b07a723a63d610
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38475
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Diffstat (limited to 'src/cpu')
0 files changed, 0 insertions, 0 deletions