linux-kernel - Re: [PATCH 2/2] [RFC] cpufreq: omap: scale regulator from clk notifier

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Date:	Fri, 20 Jul 2012 18:56:07 +0530
From:	Sekhar Nori <nsekhar@...com>
To:	Linus Walleij <linus.walleij@...aro.org>
CC:	Mike Turquette <mturquette@...aro.org>,
	Kevin Hilman <khilman@...com>, <linux-kernel@...r.kernel.org>,
	<shawn.guo@...aro.org>, <rob.herring@...xeda.com>,
	<pdeschrijver@...dia.com>, <pgaikwad@...dia.com>,
	<viresh.kumar@...aro.org>, <rnayak@...com>, <paul@...an.com>,
	<broonie@...nsource.wolfsonmicro.com>, <tglx@...utronix.de>,
	<ccross@...roid.com>, <linux-arm-kernel@...ts.infradead.org>,
	"Karicheri, Muralidharan" <m-karicheri2@...com>
Subject: Re: [PATCH 2/2] [RFC] cpufreq: omap: scale regulator from clk notifier

Hi Linus,

On 7/17/2012 3:58 AM, Linus Walleij wrote:
> On Sat, Jul 14, 2012 at 2:16 AM, Mike Turquette <mturquette@...aro.org> wrote:
> '
>> This patch moves direct control of the MPU voltage regulator out of the
>> cpufreq driver .target callback and instead puts that logic into a clock
>> rate change notifier callback.
> 
> That's heavy stuff.
> 
> I was hoping that the first example of using clk notifiers would be
> something like mach-davinci replacing it's legacy clock framework
> with drivers/clk and then go in and change the horrid cpufreq hack
> that is currently in drivers/mmc/host/davinci_mmc.c to use a
> clock notifier instead of cpufreq.
> 
> Sekhar/Kevin, any chance to have DaVinci converted to Mikes new
> clock framework? It doesn't look super-complex and would be a
> good example for others I think.

Murali (CCed) from TI is planning to work on it and should be posting
patches in 3rd/4th week of August. Once he is done, will work on
migrating the drivers to clock notifiers.

Thanks,
Sekhar
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