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Message-ID: <d2e55523-f8fd-4cbe-909c-57de241107e8@linaro.org>
Date: Fri, 10 May 2024 14:01:13 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Konrad Dybcio <konrad.dybcio@...aro.org>,
 Jagadeesh Kona <quic_jkona@...cinc.com>,
 Bjorn Andersson <andersson@...nel.org>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
 Vikash Garodia <quic_vgarodia@...cinc.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Ulf Hansson <ulf.hansson@...aro.org>, "Rafael J . Wysocki"
 <rafael@...nel.org>, Kevin Hilman <khilman@...nel.org>,
 Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Andy Gross <agross@...nel.org>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
 Abel Vesa <abel.vesa@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
 linux-pm@...r.kernel.org, Taniya Das <quic_tdas@...cinc.com>,
 Satya Priya Kakitapalli <quic_skakitap@...cinc.com>,
 Imran Shaik <quic_imrashai@...cinc.com>,
 Ajit Pandey <quic_ajipan@...cinc.com>
Subject: Re: [PATCH V5 RESEND 5/5] venus: pm_helpers: Use
 dev_pm_genpd_set_hwmode to switch GDSC mode on V6

On 01/05/2024 10:14, Bryan O'Donoghue wrote:
> On 30/04/2024 21:01, Konrad Dybcio wrote:
>> On 24.04.2024 11:50 AM, Bryan O'Donoghue wrote:
>>> On 24/04/2024 10:45, Jagadeesh Kona wrote:
>>>>
>>>> Thanks Bryan for testing this series. Can you please confirm if this 
>>>> issue is observed in every run or only seen during the first run? 
>>>> Also please let me know on which platform this issue is observed?
>>>>
>>>> Thanks,
>>>> Jagadeesh
>>>
>>> rb5/sm8250
>>>
>>> My observation was on a previous _boot_ the stuttering was worse. 
>>> There is in the video capture three times that I count where the 
>>> video halts briefly, I guess we need to vote or set an OPP so the 
>>> firmware knows not to power-collapse quite so aggressively.
>>
>> We seem to be having some qualcomm-wide variance on perf/pwr usage on 
>> some
>> odd boots.. Any chance you could try like 5 times and see if it was a 
>> fluke?
>>
>> Konrad
> 
> Sure.
> 
> The first time I tried it, it was much worse.
> 
> The second time, captured in the video is only noticeable because I was 
> *looking* for this specific error i.e. I don't think I would have 
> noticed the error on the second run, had I not seen the first run.
> 
> I'll find some time to do 5x with and 5x without.
> 
> ---
> bod

ping bod please remember to do this thanks

---
bod

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