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authorEdward O'Callaghan <quasisec@google.com>2020-01-20 18:21:13 +1100
committerEdward O'Callaghan <quasisec@chromium.org>2020-02-07 03:33:43 +0000
commitb40c6009141e2c6a6f886584ea6d5b7e4fe69347 (patch)
tree5d6b5f636398cea92bce4becb10e4bd70afe0436 /src/mainboard/google/gru
parent2806ec971e11cccee86927ddde6ace3a34319cfb (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>
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