tree ca76843d680a56ce9a5f5de25895d99b68185cb7
parent 6dc7843082cf50e71001c9b24850bfbc86c3a39e
author Matt DeVillier <matt.devillier@gmail.com> 1784648899 -0500
committer Nico Huber <nico.h@gmx.de> 1784906860 +0000

hw-gfx-edid: Clamp preferred mode BPC to 8

EDID often advertises 10+ BPC while the link (or FDI) cannot carry
that at the preferred mode. Cap Mode.BPC at 8 after reading the EDID
depth field so modes stay within typical DP/HDMI/FDI bandwidth.

Tested on samsung/stumpy with a Dell UW3419 over DisplayPort.

Change-Id: I8ef4e493ded3d29be26bda851b478db7c8ad2723
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.sourcearcade.org/c/libgfxinit/+/571
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Nico Huber <nico.h@gmx.de>