Re: [Intel-gfx] [PATCH 2/5] drm/i915: Re-adjusting rc6 promotional timer for chv
2015-02-26 12:16 GMT-03:00 deepa...@linux.intel.com: From: Deepak S deepa...@linux.intel.com After feedback from the hardware team we are changing the RC6 promotional timer to increase the power saving without changing performance. 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.zan...@intel.com Signed-off-by: Deepak S deepa...@linux.intel.com --- 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 7dcb5b6..90cb6c9 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4799,8 +4799,8 @@ 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 -- Paulo Zanoni ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH 2/5] drm/i915: Re-adjusting rc6 promotional timer for chv
On Tuesday 24 March 2015 01:13 AM, Paulo Zanoni wrote: 2015-02-26 12:16 GMT-03:00 deepa...@linux.intel.com: From: Deepak S deepa...@linux.intel.com After feedback from the hardware team we are changing the RC6 promotional timer to increase the power saving without changing performance. 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.zan...@intel.com Hi Paulo, Measurements was done by hardware team :) Thanks Deepak Signed-off-by: Deepak S deepa...@linux.intel.com --- 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 7dcb5b6..90cb6c9 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4799,8 +4799,8 @@ 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 ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
[Intel-gfx] [PATCH 2/5] drm/i915: Re-adjusting rc6 promotional timer for chv
From: Deepak S deepa...@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 deepa...@linux.intel.com --- 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 7dcb5b6..90cb6c9 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4799,8 +4799,8 @@ 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
