Without this patch, eDP output is non-functional pre-graphics driver regardless of payload (SeaBIOS, Tianocore) or video init method (VBIOS, GOP driver) and once the standard Windows Intel HD graphics driver is loaded. Test: Boot Windows on peppy and auron_paine, install Intel HD Graphics driver, observe functional eDP output with full video acceleration. Debugging method: adjust location of call to run VBIOS within coreboot, observed that eDP output functional if the VBIOS is run before the power optimizer lines, broken if run afterwards. Change-Id: I6d8252e3de396887c84533e355f41693b9ea7514 Signed-off-by: Prabal Saha <coolstarorganization@gmail.com> Reviewed-on: https://review.coreboot.org/15261 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com> |
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