[PATCH v10 0/2] Consider DBuf bandwidth when calculating CDCLK

Stanislav Lisovskiy stanislav.lisovskiy at intel.com
Mon May 25 09:18:58 UTC 2020


We need to calculate cdclk after watermarks/ddb has been calculated
as with recent hw CDCLK needs to be adjusted accordingly to DBuf
requirements, which is not possible with current code organization.

Setting CDCLK according to DBuf BW requirements and not just rejecting
if it doesn't satisfy BW requirements, will allow us to save power when
it is possible and gain additional bandwidth when it's needed - i.e
boosting both our power management and perfomance capabilities.

Stanislav Lisovskiy (2):
  drm/i915: Adjust CDCLK accordingly to our DBuf bw needs
  drm/i915: Remove unneeded hack now for CDCLK

 drivers/gpu/drm/i915/display/intel_bw.c      | 127 ++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_bw.h      |  10 ++
 drivers/gpu/drm/i915/display/intel_cdclk.c   |  37 ++++--
 drivers/gpu/drm/i915/display/intel_display.c |  39 +++++-
 drivers/gpu/drm/i915/i915_drv.h              |   1 +
 drivers/gpu/drm/i915/intel_pm.c              |  34 ++++-
 drivers/gpu/drm/i915/intel_pm.h              |   6 +-
 7 files changed, 228 insertions(+), 26 deletions(-)

-- 
2.24.1.485.gad05a3d8e5



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