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Message-ID: <20201030193427.GA4186428@bogus> Date: Fri, 30 Oct 2020 14:34:27 -0500 From: Rob Herring <robh@...nel.org> To: Lukasz Luba <lukasz.luba@....com> Cc: linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, vireshk@...nel.org, sboyd@...nel.org, nm@...com, rafael@...nel.org, sudeep.holla@....com, daniel.lezcano@...aro.org, Dietmar.Eggemann@....com Subject: Re: [PATCH 1/4] dt-bindings: opp: Introduce opp-sustainable bindings On Wed, Oct 28, 2020 at 02:08:44PM +0000, Lukasz Luba wrote: > Add opp-sustainable as an additional property in the OPP node to describe > the sustainable performance level of the device. This will help to > estimate the sustainable performance of the whole system. > > Signed-off-by: Lukasz Luba <lukasz.luba@....com> > --- > Documentation/devicetree/bindings/opp/opp.txt | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/bindings/opp/opp.txt b/Documentation/devicetree/bindings/opp/opp.txt > index 9847dfeeffcb..cd01028de305 100644 > --- a/Documentation/devicetree/bindings/opp/opp.txt > +++ b/Documentation/devicetree/bindings/opp/opp.txt > @@ -154,6 +154,10 @@ Optional properties: > - opp-suspend: Marks the OPP to be used during device suspend. If multiple OPPs > in the table have this, the OPP with highest opp-hz will be used. > > +- opp-sustainable: Marks the OPP as sustainable. This property can be used for > + estimating sustainable performance of the whole system. If multiple OPPs in > + the table have this, the OPP with highest opp-hz will be used. > + Isn't this just the inverse of the turbo? or boost? flag we already have? Couldn't this be learned? I ran at this frequency and then overheated. That could be dependent on ambient temperatures or dust build up on fans/heatsink. Rob
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