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<p class="MsoNormal">Patches looks fine. <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Californian FB","serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal">Reviewed-by: Deepak S <<span class="MsoHyperlink">deepak.s@inel.com</span><a href="mailto:jbarnes@virtuousgeek.org"></a>><span style="font-size:11.0pt;font-family:"Californian FB","serif";color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal">From: <b>Jesse Barnes</b> <<a href="mailto:jbarnes@virtuousgeek.org">jbarnes@virtuousgeek.org</a>><br>
Date: Fri, Nov 15, 2013 at 11:02 PM<br>
Subject: [Intel-gfx] [PATCH 1/2] drm/i915/vlv: use a lower RC6 timeout on VLV<br>
To: <a href="mailto:intel-gfx@lists.freedesktop.org">intel-gfx@lists.freedesktop.org</a><br>
<br>
<br>
We use timeout mode, and we need to lower the timeout to get good RC6<br>
residency when loads are running. This gets me from 0% residency during<br>
glxgears to 77%, which is a pretty good improvement. This value also<br>
matches the current BWG recommentations.<br>
<br>
Tested-by: "Meng, Mengmeng" <<a href="mailto:mengmeng.meng@intel.com">mengmeng.meng@intel.com</a>><br>
Signed-off-by: Jesse Barnes <<a href="mailto:jbarnes@virtuousgeek.org">jbarnes@virtuousgeek.org</a>><br>
---<br>
drivers/gpu/drm/i915/intel_pm.c | 2 +-<br>
1 file changed, 1 insertion(+), 1 deletion(-)<br>
<br>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c<br>
index 172efa0..5d3912a 100644<br>
--- a/drivers/gpu/drm/i915/intel_pm.c<br>
+++ b/drivers/gpu/drm/i915/intel_pm.c<br>
@@ -4102,7 +4102,7 @@ static void valleyview_enable_rps(struct drm_device *dev)<br>
for_each_ring(ring, dev_priv, i)<br>
I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10);<br>
<br>
- I915_WRITE(GEN6_RC6_THRESHOLD, 0xc350);<br>
+ I915_WRITE(GEN6_RC6_THRESHOLD, 0x557);<br>
<br>
/* allows RC6 residency counter to work */<br>
I915_WRITE(VLV_COUNTER_CONTROL,<br>
<span class="hoenzb"><span style="color:#888888">--</span></span><span style="color:#888888"><br>
<span class="hoenzb">1.8.4.2</span><br>
<br>
<span class="hoenzb">_______________________________________________</span><br>
<span class="hoenzb">Intel-gfx mailing list</span><br>
<span class="hoenzb"><a href="mailto:Intel-gfx@lists.freedesktop.org">Intel-gfx@lists.freedesktop.org</a></span><br>
<span class="hoenzb"><a href="http://lists.freedesktop.org/mailman/listinfo/intel-gfx" target="_blank">http://lists.freedesktop.org/mailman/listinfo/intel-gfx</a></span></span><o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <br>
Deepak S <o:p></o:p></p>
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