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Message-ID: <d2e55523-f8fd-4cbe-909c-57de241107e8@linaro.org>
Date: Fri, 10 May 2024 14:01:13 +0100
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Subject: Re: [PATCH V5 RESEND 5/5] venus: pm_helpers: Use
 dev_pm_genpd_set_hwmode to switch GDSC mode on V6
From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
To: Konrad Dybcio <konrad.dybcio@linaro.org>,
 Jagadeesh Kona <quic_jkona@quicinc.com>,
 Bjorn Andersson <andersson@kernel.org>,
 Michael Turquette <mturquette@baylibre.com>, Stephen Boyd
 <sboyd@kernel.org>, Stanimir Varbanov <stanimir.k.varbanov@gmail.com>,
 Vikash Garodia <quic_vgarodia@quicinc.com>,
 Mauro Carvalho Chehab <mchehab@kernel.org>,
 Ulf Hansson <ulf.hansson@linaro.org>, "Rafael J . Wysocki"
 <rafael@kernel.org>, Kevin Hilman <khilman@kernel.org>,
 Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>,
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
 Andy Gross <agross@kernel.org>,
 Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
 Abel Vesa <abel.vesa@linaro.org>
Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
 linux-pm@vger.kernel.org, Taniya Das <quic_tdas@quicinc.com>,
 Satya Priya Kakitapalli <quic_skakitap@quicinc.com>,
 Imran Shaik <quic_imrashai@quicinc.com>,
 Ajit Pandey <quic_ajipan@quicinc.com>
References: <20240413152013.22307-1-quic_jkona@quicinc.com>
 <20240413152013.22307-6-quic_jkona@quicinc.com>
 <5c78ad52-524b-4ad7-b149-0e7252abc2ee@linaro.org>
 <b96ef82c-4033-43e0-9c1e-347ffb500751@quicinc.com>
 <a522f25f-bb38-4ae1-8f13-8e56934e5ef5@linaro.org>
 <dbd1b86c-7b5f-4b92-ab1f-fecfe1486cfc@quicinc.com>
 <621dbaaa-6b86-45b5-988e-a6d9c39b13d7@linaro.org>
 <d36c1163-a3f0-4034-a430-91986e5bbce8@linaro.org>
 <ef194e5c-f136-4dba-bfe0-2c6439892e34@linaro.org>
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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