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[v3,2/5] drm/i915: Re-adjusting rc6 promotional timer for chv

Message ID 1427536418-22801-3-git-send-email-deepak.s@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

deepak.s@linux.intel.com March 28, 2015, 9:53 a.m. UTC
From: Deepak S <deepak.s@linux.intel.com>

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>
---
 drivers/gpu/drm/i915/intel_pm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Daniel Vetter April 16, 2015, 3:26 p.m. UTC | #1
On Sat, Mar 28, 2015 at 03:23:35PM +0530, deepak.s@linux.intel.com wrote:
> From: Deepak S <deepak.s@linux.intel.com>
> 
> 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>

Queued for -next, thanks for the patch.
-Daniel

> ---
>  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 fa4ccb3..44428e4 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4996,8 +4996,8 @@ 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
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index fa4ccb3..44428e4 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4996,8 +4996,8 @@  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,