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| author |   Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-04-13 19:49:13 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-05-26 18:02:49 +0300 |
| commit | 78776086371bf8aba4314a52a46c52d946984c61 (patch) | |
| tree | eee20ecae74f898a334679f8e615761d5e5feb1e /scripts/gdb/linux/utils.py | |
| parent | drm/i915: Fix CHV CGM CSC coefficient sign handling (diff) | |
| download | wireguard-linux-78776086371bf8aba4314a52a46c52d946984c61.tar.xz wireguard-linux-78776086371bf8aba4314a52a46c52d946984c61.zip | |
drm/i915: Always enable CGM CSC on CHV
On CHV toggling the CGM CSC on/off while the pipe is running leads
to underruns. Looks like we'd have to do the toggling strictly inside
the start_of_vblank-frame_start window to avoid this, but that window
is less than a scanline so there's no way we can guarantee hitting it.
As a workaround let's just leave the CGM CSC permanently enabled.
Fortunately the CGM gamma/degamma units don't seem to suffer from
this malady.
I also tried turning off CGM unit clock gating, but that did not
help.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230413164916.4221-5-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions