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authorLeah Rowe <info@minifree.org>2024-02-23 13:33:31 +0000
committerFelix Held <felix-coreboot@felixheld.de>2024-03-04 15:22:21 +0000
commit1e2821882f38f866bf81cdd29404d8372ddcfef9 (patch)
tree50ba949a0d7382dc30aff8b85d992033e6413825 /src/mainboard/bytedance/bd_egs/include
parent787b2b44afb94d60b17daea16fc9fa6d364c9c5c (diff)
nb/haswell: Disable iGPU when dGPU is used
This is usually is handled by Haswell mrc.bin, disabling VGA decode on the iGPU when a dGPU is installed. However, Broadwell mrc.bin does not, so the iGPU and dGPU are both enabled. This patch disables legacy VGA cycles for iGPU, under such conditions. It has been tested on Broadwell mrc.bin when using a graphics card on Dell OptiPlex 9020 SFF (currently under review at this time of writing, submitted by Mate Kukri). This patch has also been tested when Haswell mrc.bin is used, and there are seemingly no breaking changes caused by it. Change-Id: I1df0a3aa42f8475b7741007bf3e28c2e089d916b Signed-off-by: Leah Rowe <info@minifree.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/80717 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
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