Re: [Intel-gfx] [PATCH v2] drm/i915: Drop WA to fix Voltage not getting dropped to Vmin when Gfx is power gated for latest VLV revision
On Fri, 27 Jun 2014, Ville Syrjälä wrote:
> On Sat, Jun 28, 2014 at 11:26:11AM +0530, deepa...@linux.intel.com wrote:
>> From: Deepak S
>>
>> Workaround fixed in Latest VLV revision. Forcing Gfx clk up not needed, and
>> Requesting the
>> min freq should bring bring the voltage Vnn.
>>
>> v2: Drop WA for Latest VLV revision (Ville)
>>
>> Signed-off-by: Deepak S
>> ---
>> drivers/gpu/drm/i915/intel_pm.c | 8
>> 1 file changed, 8 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_pm.c
>> b/drivers/gpu/drm/i915/intel_pm.c
>> index a90fdbd..6b6cfd4 100644
>> --- a/drivers/gpu/drm/i915/intel_pm.c
>> +++ b/drivers/gpu/drm/i915/intel_pm.c
>> @@ -3212,6 +3212,14 @@ void gen6_set_rps(struct drm_device *dev, u8 val)
>> */
>> static void vlv_set_rps_idle(struct drm_i915_private *dev_priv)
>> {
>> +struct drm_device *dev = dev_priv->dev;
>> +
>> +/* Latest VLV doesn't need Vnn WA*/
>
> Maybe this should say "Latest VLV doesn't need to force the gfx clock"
> or something like that. We are still doing this to reduce Vnn after all.
>
> Apart from that this matches my observations so:
> Reviewed-by: Ville Syrjälä
Pushed to -fixes with the comment changed and commit message massaged a
bit. Thanks for the patch and review.
BR,
Jani.
>
>> +if (dev->pdev->revision >= 0xd) {
>> +valleyview_set_rps(dev_priv->dev,
>> dev_priv->rps.min_freq_softlimit);
>> +return;
>> +}
>> +
>> /*
>> * When we are idle. Drop to min voltage state.
>> */
>> --
>> 1.9.1
>
> --
> Ville Syrjälä
> Intel OTC
> ___
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Re: [Intel-gfx] [PATCH v2] drm/i915: Drop WA to fix Voltage not getting dropped to Vmin when Gfx is power gated for latest VLV revision
On Fri, 27 Jun 2014, Jani Nikula wrote:
> On Sat, 28 Jun 2014, deepa...@linux.intel.com wrote:
>> From: Deepak S
>>
>> Workaround fixed in Latest VLV revision. Forcing Gfx clk up not needed, and
>> Requesting the
>> min freq should bring bring the voltage Vnn.
>>
>> v2: Drop WA for Latest VLV revision (Ville)
>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=75244
Per comments in the bug, scratch that.
Deepak, I presume this patch is needed nonetheless?
BR,
Jani.
>
>> Signed-off-by: Deepak S
>> ---
>> drivers/gpu/drm/i915/intel_pm.c | 8
>> 1 file changed, 8 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_pm.c
>> b/drivers/gpu/drm/i915/intel_pm.c
>> index a90fdbd..6b6cfd4 100644
>> --- a/drivers/gpu/drm/i915/intel_pm.c
>> +++ b/drivers/gpu/drm/i915/intel_pm.c
>> @@ -3212,6 +3212,14 @@ void gen6_set_rps(struct drm_device *dev, u8 val)
>> */
>> static void vlv_set_rps_idle(struct drm_i915_private *dev_priv)
>> {
>> +struct drm_device *dev = dev_priv->dev;
>> +
>> +/* Latest VLV doesn't need Vnn WA*/
>> +if (dev->pdev->revision >= 0xd) {
>> +valleyview_set_rps(dev_priv->dev,
>> dev_priv->rps.min_freq_softlimit);
>> +return;
>> +}
>> +
>> /*
>> * When we are idle. Drop to min voltage state.
>> */
>> --
>> 1.9.1
>>
>> ___
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>> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
> --
> Jani Nikula, Intel Open Source Technology Center
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Re: [Intel-gfx] [PATCH v2] drm/i915: Drop WA to fix Voltage not getting dropped to Vmin when Gfx is power gated for latest VLV revision
On Sat, Jun 28, 2014 at 11:26:11AM +0530, deepa...@linux.intel.com wrote:
> From: Deepak S
>
> Workaround fixed in Latest VLV revision. Forcing Gfx clk up not needed, and
> Requesting the
> min freq should bring bring the voltage Vnn.
>
> v2: Drop WA for Latest VLV revision (Ville)
>
> Signed-off-by: Deepak S
> ---
> drivers/gpu/drm/i915/intel_pm.c | 8
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index a90fdbd..6b6cfd4 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -3212,6 +3212,14 @@ void gen6_set_rps(struct drm_device *dev, u8 val)
> */
> static void vlv_set_rps_idle(struct drm_i915_private *dev_priv)
> {
> + struct drm_device *dev = dev_priv->dev;
> +
> + /* Latest VLV doesn't need Vnn WA*/
Maybe this should say "Latest VLV doesn't need to force the gfx clock"
or something like that. We are still doing this to reduce Vnn after all.
Apart from that this matches my observations so:
Reviewed-by: Ville Syrjälä
> + if (dev->pdev->revision >= 0xd) {
> + valleyview_set_rps(dev_priv->dev,
> dev_priv->rps.min_freq_softlimit);
> + return;
> + }
> +
> /*
>* When we are idle. Drop to min voltage state.
>*/
> --
> 1.9.1
--
Ville Syrjälä
Intel OTC
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Re: [Intel-gfx] [PATCH v2] drm/i915: Drop WA to fix Voltage not getting dropped to Vmin when Gfx is power gated for latest VLV revision
On Sat, 28 Jun 2014, deepa...@linux.intel.com wrote:
> From: Deepak S
>
> Workaround fixed in Latest VLV revision. Forcing Gfx clk up not needed, and
> Requesting the
> min freq should bring bring the voltage Vnn.
>
> v2: Drop WA for Latest VLV revision (Ville)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=75244
> Signed-off-by: Deepak S
> ---
> drivers/gpu/drm/i915/intel_pm.c | 8
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index a90fdbd..6b6cfd4 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -3212,6 +3212,14 @@ void gen6_set_rps(struct drm_device *dev, u8 val)
> */
> static void vlv_set_rps_idle(struct drm_i915_private *dev_priv)
> {
> + struct drm_device *dev = dev_priv->dev;
> +
> + /* Latest VLV doesn't need Vnn WA*/
> + if (dev->pdev->revision >= 0xd) {
> + valleyview_set_rps(dev_priv->dev,
> dev_priv->rps.min_freq_softlimit);
> + return;
> + }
> +
> /*
>* When we are idle. Drop to min voltage state.
>*/
> --
> 1.9.1
>
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Jani Nikula, Intel Open Source Technology Center
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[Intel-gfx] [PATCH v2] drm/i915: Drop WA to fix Voltage not getting dropped to Vmin when Gfx is power gated for latest VLV revision
From: Deepak S
Workaround fixed in Latest VLV revision. Forcing Gfx clk up not needed, and
Requesting the
min freq should bring bring the voltage Vnn.
v2: Drop WA for Latest VLV revision (Ville)
Signed-off-by: Deepak S
---
drivers/gpu/drm/i915/intel_pm.c | 8
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index a90fdbd..6b6cfd4 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3212,6 +3212,14 @@ void gen6_set_rps(struct drm_device *dev, u8 val)
*/
static void vlv_set_rps_idle(struct drm_i915_private *dev_priv)
{
+ struct drm_device *dev = dev_priv->dev;
+
+ /* Latest VLV doesn't need Vnn WA*/
+ if (dev->pdev->revision >= 0xd) {
+ valleyview_set_rps(dev_priv->dev,
dev_priv->rps.min_freq_softlimit);
+ return;
+ }
+
/*
* When we are idle. Drop to min voltage state.
*/
--
1.9.1
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