Linux ARM-MSM sub-architecture
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From: Konrad Dybcio <konrad.dybcio@linaro.org>
To: Chris Healy <cphealy@gmail.com>, dmitry.baryshkov@linaro.org
Cc: airlied@gmail.com, Daniel Vetter <daniel@ffwll.ch>,
	DRI mailing list <dri-devel@lists.freedesktop.org>,
	freedreno <freedreno@lists.freedesktop.org>,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	quic_abhinavk@quicinc.com, Rob Clark <robdclark@gmail.com>,
	sean@poorly.run, Marek Vasut <marex@denx.de>
Subject: Re: [PATCH 1/5] drm/msm/adreno: Use OPP for every GPU generation
Date: Mon, 27 Feb 2023 11:45:15 +0100	[thread overview]
Message-ID: <3d951b70-ecea-c97c-8a2e-72ca6b1a2bf7@linaro.org> (raw)
In-Reply-To: <CAFXsbZqnstOLFBrVVa7aFLSGCPNj4VkjExqq1XUoRdUUuBKdog@mail.gmail.com>



On 24.02.2023 17:56, Chris Healy wrote:
> I may be missing something, but looking at the code path for a2xx,
> it's not clear to me how this would work with SoCs with a2xx that
> don't support 200MHz for GPU frequency.  For example, the NXP i.MX51
> requires the A205 GPU to run at 166MHz while the NXP i.MX53 requires
> the A205 GPU to run at 200MHz.
This is something outside the scope of this patch, I feel like.

If I'm reading the code correctly, the driver always assumed 200 MHz
for non-pwrlevels and non-OPP targets before this patch, and this
patch is meant to bring no difference in the rates selected.

Konrad

  reply	other threads:[~2023-02-27 10:45 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-24 16:56 [PATCH 1/5] drm/msm/adreno: Use OPP for every GPU generation Chris Healy
2023-02-27 10:45 ` Konrad Dybcio [this message]
  -- strict thread matches above, loose matches on Subject: below --
2023-02-22 21:47 [PATCH 0/5] OPP and devfreq for all Adrenos Konrad Dybcio
2023-02-22 21:47 ` [PATCH 1/5] drm/msm/adreno: Use OPP for every GPU generation Konrad Dybcio
2023-02-22 22:38   ` Dmitry Baryshkov
2023-02-22 22:40     ` Konrad Dybcio
2023-02-22 23:16       ` Dmitry Baryshkov
2023-02-23  1:02         ` Konrad Dybcio

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