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Message-ID: <20231031052627.3xuryhy3o4rk5nb2@vireshk-i7>
Date: Tue, 31 Oct 2023 10:56:27 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
Stephen Boyd <sboyd@...nel.org>,
"Rafael J. Wysocki" <rafael@...nel.org>, linux-pm@...r.kernel.org,
Vincent Guittot <vincent.guittot@...aro.org>,
Ulf Hansson <ulf.hansson@...aro.org>,
Stephan Gerhold <stephan.gerhold@...nkonzept.com>,
Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 1/3] OPP: Level zero is valid
On 30-10-23, 19:47, Konrad Dybcio wrote:
> On 30.10.2023 11:24, Viresh Kumar wrote:
> > The level zero can be used by some OPPs to drop performance state vote
> > for the device. It is perfectly fine to allow the same.
> >
> > _set_opp_level() considers it as an invalid value currently and returns
> > early.
> So, currently if the device is PM-enabled, but OPP requirements are lifted,
How exactly are the OPP requirements lifted ?
By calling dev_pm_opp_set_opp(dev, NULL) ?
This will work fine even without this commit.
> is the API currently internally stuck at the last non-zero level?
>
> Just trying to understand if this could fix some silent issues
Also the issue I am trying to solve here came in existence only during the 6.7
merge window and doesn't affect the genpds linked via required-opps. And this
commit will soon be merged.
--
viresh
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