linux-kernel - Re: [PATCH V2] cpufreq: ARM big LITTLE: Add generic cpufreq driver and its DT glue

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Message-ID: <CAKohpomVitj=mMmT3Z_QPgxzDyXkKN6xYReyJxO1Nc3ei=zCww@mail.gmail.com>
Date:	Sat, 9 Mar 2013 11:06:55 +0800
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Guennadi Liakhovetski <g.liakhovetski@....de>
Cc:	rjw@...k.pl, Steve.Bannister@....com, linux@....linux.org.uk,
	linux-pm@...r.kernel.org,
	Sudeep KarkadaNagesha <sudeep.karkadanagesha@....com>,
	devicetree-discuss@...ts.ozlabs.org, Liviu.Dudau@....com,
	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org,
	robin.randhawa@....com, linux-arm-kernel@...ts.infradead.org,
	mark.hambleton@...adcom.com, linaro-kernel@...ts.linaro.org,
	charles.garcia-tobin@....com
Subject: Re: [PATCH V2] cpufreq: ARM big LITTLE: Add generic cpufreq driver
 and its DT glue

On 8 March 2013 14:11, Guennadi Liakhovetski <g.liakhovetski@....de> wrote:
> Also in your driver you're doing
>
>                 cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
>                 ...
>                 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
>
> So, theoretically you could install such notifiers to adjust CPU voltages
> (using regulators too). But adding regulator calls directly to the driver
> would make it consistent with cpufreq-cpu0.c.

Yes

>  so, if this doesn't violate
> any concepts, I think, it would be good to add those when suitable systems
> appear.

That's what i thought :)
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