From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Brown <broonie@kernel.org>
Subject: Re: [RFC V2] OPP: Redefine bindings to overcome shortcomings
Date: Thu, 29 Jan 2015 11:07:44 +0000
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To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Rafael Wysocki <rjw@rjwysocki.net>, Arnd Bergmann <arnd.bergmann@linaro.org>, Rob Herring <rob.herring@linaro.org>, Grant Likely <grant.likely@linaro.org>, "olof@lixom.net" <olof@lixom.net>, Linaro Kernel Mailman List <linaro-kernel@lists.linaro.org>, "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>, Nishanth Menon <nm@ti.com>, Sudeep Holla <Sudeep.Holla@arm.com>, Stephen Boyd <sboyd@codeaurora.org>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, santosh shilimkar <santosh.shilimkar@oracle.com>, Mike Turquette <mike.turquette@linaro.org>, Abhilash Kesavan <kesavan.abhilash@gmail.com>, Catalin Marinas <catalin.marinas@arm.com>, Thomas Abraham <ta.omasab@gmail.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, Thomas Petazzoni <thomas.petazzoni@free-electrons.com>, Lucas Stach <l.stach@pengutronix.de>


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On Thu, Jan 29, 2015 at 07:09:23AM +0530, Viresh Kumar wrote:
> On 29 January 2015 at 01:36, Mark Brown <broonie@kernel.org> wrote:

> >> +  Required properties:
> >> +  - compatible: allow OPPs to express their compatibility.
> >> +  - opp-list: phandle to opp-list defined above.

> > I don't understand what that compatible property is intended to mean and
> > I expect other readers might be similarly confused - is it a standard
> > compatbile property meaning this noe corresponds to some sort of device?

> The goal is to choose the driver which we want to probe for a platform. There
> can be multiple DT enabled cpufreq drivers present in a build and the platform
> needs some way to choose one of them.

So you need to document this as a platform device then if that's what
you're doing here; there's more than just specifying a compatible string
involved.

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