linux-kernel - Re: [PATCH] drm/msm/adreno: Add support for Adreno 505 GPU

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Date: Tue, 4 Jun 2024 14:27:04 +0200
From: Barnabás Czémán <trabarni@...il.com>
To: Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>, 
	Abhinav Kumar <quic_abhinavk@...cinc.com>, Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
	Marijn Suijten <marijn.suijten@...ainline.org>, David Airlie <airlied@...il.com>, 
	Daniel Vetter <daniel@...ll.ch>, linux-arm-msm@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org, 
	linux-kernel@...r.kernel.org, Daniil Titov <daniilt971@...il.com>
Subject: Re: [PATCH] drm/msm/adreno: Add support for Adreno 505 GPU

On Tue, Jun 4, 2024 at 1:55 PM Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>
>
>
> On 6/4/24 02:20, Barnabás Czémán wrote:
> > From: Daniil Titov <daniilt971@...il.com>
> >
> > This GPU is found on SoCs such as MSM8937 (450 MHz), MSM8940 (475 MHz),
> > SDM439 (650 MHz).
> >
> > Signed-off-by: Daniil Titov <daniilt971@...il.com>
> > Signed-off-by: Barnabás Czémán <trabarni@...il.com>
> > ---
>
> This all looks very good, just a nit
>
> [...]
>
> > +             /*
> > +              * Increase inactive period to 250 to avoid bouncing
> > +              * the GDSC which appears to make it grumpy
> > +              */
> > +             .inactive_period = 250,
>
> Are you sure this is actually necessary?
Every A5XX GPU is using the same value, but i have never tried with
DRM_MSM_INACTIVE_PERIOD.

>
> Konrad