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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.
Also, if an HDMI monitor is connected, no wait is needed. If only
an HDMI monitor is connected, currently the API always loops until
the stopwatch expires.
This patch will make the AP skip DisplayPort wait loop if it detects
an HDMI monitor. And if an HDMI monitor is not detected, the AP will
wait for DisplayPort mode (like before) but also its HPD signal.
This patch also extends the wait loop time-out to 3 seconds.
BUG=b:72387533
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: I0e1afdffbebf4caf35bbb792e7f4637fae89fa49
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://review.coreboot.org/23816
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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Fizz fails to show pictures on a type-c monitor because VBIOS runs
before DisplayPort link is ready.
With this patch, when firmware needs to display something, Fizz calls
google_chromeec_wait_for_display to make sure display is ready.
The penalty is up to 2 sec per boot in dev and rec boot. Normal boot
won't affected unless there is EC update.
BUG=b:72387533
BRANCH=none
TEST=Verify screens are displayed on Fizz as follows:
1. Put DUT in normal mode
2. Flash EC image to trigger EC sync (critical update)
3. Trigger manual recovery (insert)
4. Hit ctrl+d to switch to dev mode (to-dev)
5. Confirm to reboot (dev warning)
6. Warm reboot (dev warning)
7. Cold reboot (dev warning)
8. Flash EC image to trigger EC sync (critical update)
9. Trigger manual recovery (insert)
Change-Id: I90befe94f93e13904987acda50b2598d034b0031
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://review.coreboot.org/23746
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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Creating google/fizz directory based on poppy (using kabylake and FSP
2.0). Only making name changes and Copyright year changes. Many
poppy-specific configs left in and will be updated in follup CLs.
BUG=b:35775024
BRANCH=None
TEST=Compile fizz board
Change-Id: Icab3639a53fef65e904e797028916fda879fff7c
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://review.coreboot.org/18796
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
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