drm/amd/display: Keep linebuffer pixel depth at 30bpp for DCE-11.0.

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Testing on AMD Carizzo with DCE-11.0 display engine showed that
it doesn't like a 36 bpp linebuffer very much. The display just
showed a solid green.

Testing on RavenRidge DCN-1.0, Polaris11 with DCE-11.2 and Kabini
with DCE-8.3 did not expose any problems, so for now only revert
to 30 bpp linebuffer depth on asics with DCE-11.0 display engine.

Fixes: a316db7209 ("drm/amd/display: Increase linebuffer pixel depth to 36bpp.")
Reported-by: Tom StDenis <Tom.StDenis@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Mario Kleiner 2021-06-02 22:45:56 +02:00 • committed by Alex Deucher

parent c45d9400a0

commit 72a7cf0aec

1 changed files with 9 additions and 2 deletions

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drivers/gpu/drm/amd/display/dc/core/dc_resource.c

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