[PATCH 2/4] drm/i915: set min delay to rpe delay (Efficient frequency) for better performace.

deepak.s
2013-12-08T08:46:04Z

From: Deepak S <deepak.s@intel.com>

We use RPe here since it should match the Vmin we were shooting for.
That should give us better perf than if we used the min freq available.
System thermal can take the system to lowest possible freq (RP1). We are
making sure, we calmp the freq to min_delay (RPe).

Signed-off-by: Deepak S <deepak.s@intel.com>
---
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 7f6c747..716ca24 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4177,7 +4177,7 @@ static void valleyview_enable_rps(struct drm_device *dev)
vlv_gpu_freq(dev_priv, dev_priv->rps.rpe_delay),
dev_priv->rps.rpe_delay);

- dev_priv->rps.min_delay = valleyview_rps_min_freq(dev_priv);
+ dev_priv->rps.min_delay = dev_priv->rps.rpe_delay;
DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n",
vlv_gpu_freq(dev_priv, dev_priv->rps.min_delay),
dev_priv->rps.min_delay);
--
1.8.4.2