drm/i915: Agressive downclocking on Baytrail

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Reuse the same reclocking strategy for Baytail as on its bigger brethren,
Sandybridge and Ivybridge. In particular, this makes the device quicker
to reclock (both up and down) though the tendency now is to downclock
more aggressively to compensate for the RPS boosts.

v2: Rebase
v3: Exclude Cherrytrail as Deepak was concerned that the increased
number of register writes would wake the common powerwell too often.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Deepak S <deepak.s@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Chris Wilson 2015-04-07 16:20:28 +01:00 • committed by Daniel Vetter

parent cf5d8a46a0

commit 8fb55197e6

4 changed files with 12 additions and 5 deletions

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3

drivers/gpu/drm/i915/i915_drv.h

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4

drivers/gpu/drm/i915/i915_irq.c

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2

drivers/gpu/drm/i915/i915_reg.h

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8

drivers/gpu/drm/i915/intel_pm.c

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