> Sonika
>
> -Original Message-
> From: Rodrigo Vivi [mailto:rodrigo.v...@gmail.com]
> Sent: Friday, November 20, 2015 12:01 AM
> To: Jindal, Sonika
> Cc: R, Durgadoss; Vivi, Rodrigo; intel-gfx@lists.freedesktop.org
> Subject: Re: [Intel-gfx] [PATCH 2/3] drm/i915: Remo
:rodrigo.v...@gmail.com]
Sent: Friday, November 20, 2015 12:01 AM
To: Jindal, Sonika
Cc: R, Durgadoss; Vivi, Rodrigo; intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 2/3] drm/i915: Remove PSR Perf Counter for SKL+
On Wed, Nov 18, 2015 at 11:45 PM, Jindal, Sonika
wrote:
> Hi Rodri
Durgadoss
> Sent: Thursday, November 19, 2015 11:39 AM
> To: Vivi, Rodrigo; intel-gfx@lists.freedesktop.org
> Cc: Vivi, Rodrigo
> Subject: Re: [Intel-gfx] [PATCH 2/3] drm/i915: Remove PSR Perf Counter for
> SKL+
>
>
>
>>-Original Message-
>>From: In
Message-
From: Intel-gfx [mailto:intel-gfx-boun...@lists.freedesktop.org] On Behalf Of
R, Durgadoss
Sent: Thursday, November 19, 2015 11:39 AM
To: Vivi, Rodrigo; intel-gfx@lists.freedesktop.org
Cc: Vivi, Rodrigo
Subject: Re: [Intel-gfx] [PATCH 2/3] drm/i915: Remove PSR Perf Counter for SKL
>-Original Message-
>From: Intel-gfx [mailto:intel-gfx-boun...@lists.freedesktop.org] On Behalf Of
>Rodrigo Vivi
>Sent: Thursday, November 19, 2015 6:10 AM
>To: intel-gfx@lists.freedesktop.org
>Cc: Vivi, Rodrigo
>Subject: [Intel-gfx] [PATCH 2/3] drm/i915: Remove PSR
Whenever DMC firmware put the HW into DC State a bunch
of registers including this perf counter is reset to 0 and
never restored.
So, even with PSR active and working we could still read
"Performance_Counter: 0" what will misslead people to believe
PSR is broken.
So, it is better to remove this c
