this mitigates buggy video converters e.g. displayport
to hdmi, where sometimes the display doesn't come up.
sometimes you have to probe them twice. this is apparently
what linux does, according to nicholas chin's interpretation.
this is a really quick and dirty patch that worked for
Noisytoot on IRC, tested on their Dell OptiPlex 5050 SFF
which they are porting; the port otherwise works, and this
patch enables them to use their displayport adapter.
Signed-off-by: Leah Rowe <leah@libreboot.org>
The libgfxinit patch and other patches e.g. DDR2 fix, are
now provided in coreboot/default. The Latitude E6400 is now
using the newer coreboot revision from late July 2024.
Some other configs had to change because of this, relating to
the new way that Nicholas handles timing on LVDS displays
with the E6400 port; a default 96MHz clock is still used for
pixel reference clock, overridden with a value of 100MHz on
other GM45 machines, where 96MHz was previously hardcoded.
Signed-off-by: Leah Rowe <leah@libreboot.org>
