We use timeout mode, and we need to lower the timeout to get good RC6 residency when loads are running. This gets me from 0% residency during glxgears to 77%, which is a pretty good improvement. This value also matches the current BWG recommentations.
Tested-by: "Meng, Mengmeng" <[email protected]> Signed-off-by: Jesse Barnes <[email protected]> --- drivers/gpu/drm/i915/intel_pm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 172efa0..5d3912a 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4102,7 +4102,7 @@ static void valleyview_enable_rps(struct drm_device *dev) for_each_ring(ring, dev_priv, i) I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); - I915_WRITE(GEN6_RC6_THRESHOLD, 0xc350); + I915_WRITE(GEN6_RC6_THRESHOLD, 0x557); /* allows RC6 residency counter to work */ I915_WRITE(VLV_COUNTER_CONTROL, -- 1.8.4.2 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
