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drm/i915: Re-adjusting rc6 promotional timer for chv

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After feedback from the hardware team we are changing the RC6
promotional timer to increase the power saving without
changing performance.

Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Deepak S 2015-03-28 15:23:35 +05:30 committed by Daniel Vetter
parent 74ebf294a1
commit f4f71c7dfc
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/intel_pm.c
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@ -5046,8 +5046,8 @@ static void cherryview_enable_rps(struct drm_device *dev)
I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10);
I915_WRITE(GEN6_RC_SLEEP, 0);
/* TO threshold set to 1750 us ( 0x557 * 1.28 us) */
I915_WRITE(GEN6_RC6_THRESHOLD, 0x557);
/* TO threshold set to 500 us ( 0x186 * 1.28 us) */
I915_WRITE(GEN6_RC6_THRESHOLD, 0x186);
/* allows RC6 residency counter to work */
I915_WRITE(VLV_COUNTER_CONTROL,