drm/i915: Implement display WA #1142:kbl,cfl,cml

Browse source

Implement display w/a #1142. This supposedly fixes some underruns
with FBC+VTd. Bspec says we should use the same programming regardless
of circumstances. Apparently we should flip the magic bits before
turning on any planes so let's put this into the early w/as.

Cc: Lee Shawn C <shawn.c.lee@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200924194810.10293-1-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>

...

This commit is contained in:

Ville Syrjälä 2020-09-24 22:48:10 +03:00

parent 0dbacc8955

commit 562ad8add4

2 changed files with 12 additions and 0 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

9

drivers/gpu/drm/i915/display/intel_display.c

View file

3

drivers/gpu/drm/i915/i915_reg.h

View file