drm/amdgpu: Power up UVD 3 for FW validation (v2)

Browse source

[ Upstream commit c661219cd7 ]

Unlike later versions, UVD 3 has firmware validation.
For this to work, the UVD should be powered up correctly.

When DPM is enabled and the display clock is off,
the SMU may choose a power state which doesn't power
the UVD, which can result in failure to initialize UVD.

v2:
Add code comments to explain about the UVD power state
and how UVD clock is turned on/off.

Fixes: b38f3e80ec ("drm amdgpu: SI UVD v3_1 (v2)")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Timur Kristóf 2025-08-28 17:11:03 +02:00 • committed by Greg Kroah-Hartman

parent 9ca1f214a3

commit f301840778

1 changed files with 25 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

29

drivers/gpu/drm/amd/amdgpu/uvd_v3_1.c

View file