linux-kernel - Re: [PATCH 00/14] cpufreq: cpu0: Extend support beyond CPU0, V2

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Message-ID: <CAKohpomDGc9Y8yn0SuT9PYRQqx+0Ln10g9V-ZXd=itgXpGqP6g@mail.gmail.com>
Date:	Fri, 25 Jul 2014 20:04:17 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Rob Herring <robherring2@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Rob Herring <rob.herring@...aro.org>,
	Mike Turquette <mturquette@...aro.org>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Nishanth Menon <nm@...com>,
	Lists linaro-kernel <linaro-kernel@...ts.linaro.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
	Tomasz Figa <t.figa@...sung.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Michal Simek <michal.simek@...inx.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Simon Horman <horms@...ge.net.au>,
	Thomas P Abraham <thomas.ab@...sung.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Arvind Chauhan <arvind.chauhan@....com>,
	Sachin Kamat <spk.linux@...il.com>
Subject: Re: [PATCH 00/14] cpufreq: cpu0: Extend support beyond CPU0, V2

On 25 July 2014 19:59, Rob Herring <robherring2@...il.com> wrote:
> A temporary solution would have to be NOT in DT because once you add
> something into DT you are stuck with it for some time. You could

I agree..

> simply support independent clocks by looking at the platform type, but
> that is still risky since you may want to define the OPP in DT
> differently for the 2 cases.

Or because we are going to create platform devices for now, lets have
some platform data for cpufreq-cpu0 ?

> The other problem with temporary solutions is once they are accepted,
> people loose motivation to create the permanent solution. "Can you
> take this now and I'll fix the issues later" is a red flag to
> maintainers.

I completely agree, but there are few points here which might make the red
flag yellow if not green :)
- I co-maintain this framework and so I do care about it :)
- Even with the temporary stuff the solution wouldn't be complete for platforms
with multiple clusters having separate clock lines.
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