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| author | Leo Li <[email protected]> | 2019-10-21 18:58:47 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2019-10-25 20:50:10 +0000 |
| commit | eaf56410ccb06f4af9475b7018ec46aa022ee99e (patch) | |
| tree | 705819a2b47e610e74e11ba63f7a7017dc6110db /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
| parent | drm/amdgpu: remove unused parameter in amdgpu_gfx_kiq_free_ring (diff) | |
| download | kernel-eaf56410ccb06f4af9475b7018ec46aa022ee99e.tar.gz kernel-eaf56410ccb06f4af9475b7018ec46aa022ee99e.zip | |
drm/amdgpu: Add DC feature mask to disable fractional pwm
[Why]
Some LED panel drivers might not like fractional PWM. In such cases,
backlight flickering may be observed.
[How]
Add a DC feature mask to disable fractional PWM, and associate it with
the preexisting dc_config flag.
The flag is only plumbed through the dmcu firmware, so plumb it through
the driver path as well.
To disable, add the following to the linux cmdline:
amdgpu.dcfeaturemask=0x4
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204957
Signed-off-by: Leo Li <[email protected]>
Reviewed-by: Anthony Koo <[email protected]>
Tested-by: Lukáš Krejčí <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
0 files changed, 0 insertions, 0 deletions