On Friday 27 March 2015 02:32 AM, Paulo Zanoni wrote:
2015-03-19 11:14 GMT-03:00 <deepak.s@xxxxxxxxxxxxxxx>:
From: Deepak S <deepak.s@xxxxxxxxxxxxxxx>
After feedback from the hardware team we are changing the RC6
promotional timer to increase the power saving without
changing performance.
I was told that my review comments were sent to the previous
submission of this patch. So just to document things, this is what I
wrote:
"I can't really say whether this is really what we want since I didn't
do any measurements, but the patch seems to do what it says, so:
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>"
And Deepak replied that the measurements were done by the hardware team.
Since the patch is the same, the R-B tag still applies.
Thanks Paulo.
Signed-off-by: Deepak S <deepak.s@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_pm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index e18f0fd..6d04147 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4980,8 +4980,8 @@ 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,
--
1.9.1
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