drm/i915/kbl+: Enable IPC only for symmetric memory configurations

Browse source

IPC may cause underflows if not used with dual channel symmetric
memory configuration. Disable IPC for non symmetric configurations in
affected platforms.
Display WA #1141

Changes Since V1:
 - Re-arrange the code.
 - update wrapper to return if memory is symmetric (Rodrigo)

Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180824093225.12598-6-mahesh1.kumar@intel.com

...

This commit is contained in:

Mahesh Kumar 2018-08-24 15:02:25 +05:30 • committed by Rodrigo Vivi

parent f361912aa9

commit 8a6c544763

3 changed files with 28 additions and 5 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

27

drivers/gpu/drm/i915/i915_drv.c

View file

1

drivers/gpu/drm/i915/i915_drv.h

View file

5

drivers/gpu/drm/i915/intel_pm.c

View file