linux-kernel - Re: [PATCH V2] ARM: dove: dt: revert PMU interrupt controller node

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Message-ID: <20140304121136.GR21483@n2100.arm.linux.org.uk>
Date:	Tue, 4 Mar 2014 12:11:36 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Andrew Lunn <andrew@...n.ch>, Jason Cooper <jason@...edaemon.net>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...glemail.com>,
	linux-kernel@...r.kernel.org,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V2] ARM: dove: dt: revert PMU interrupt controller node

On Tue, Mar 04, 2014 at 11:39:43AM +0100, Sebastian Hesselbarth wrote:
> On 03/04/2014 10:26 AM, Andrew Lunn wrote:
>>> I could have sworn this was discussed with this particular patchset, but
>>> I'm unable to find the conversation in my archives.  Neither during the
>>> patch submission process, nor the (long) pull request thread.
>>>
>>> Perhaps it was an irc conversation?  Andrew, Sebastian, can you find a
>>> link?  iirc, one of the DT maintainers (Mark Rutland?) raised the same
>>> concern and I thought we answered that sufficiently...
>>
>> It was the cpufreq driver which caused the discussion. I looked at it
>> for a while, and then task swapped onto the kirkwood move into
>> mach-mvebu.
>
> I guess you are looking for this discussion
>
> http://comments.gmane.org/gmane.linux.power-management.general/41053
>
> and specifically Mark's remarks on PMU and DT in here
>
> http://permalink.gmane.org/gmane.linux.ports.arm.kernel/285384
>
> BTW, +1 for a single PMU node that either serves an mfd (or type
> of) driver or that subsystem drivers derive their resources from.
> Looking at Dove FS, that would also include clock gating, which
> could be a mess to sort out.. anyway, let's get it on.

So we have cpufreq, pm domains and an irq controller.  What's the plan
for this, who's going to look at sorting this out?

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