linux-kernel - Re: [PATCH v6 0/8] Add support for Tegra Activity Monitor

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Date:	Mon, 23 Mar 2015 16:35:00 +0900
From:	Alexandre Courbot <gnurou@...il.com>
To:	Tomeu Vizoso <tomeu.vizoso@...labora.com>,
	Arto Merilainen <amerilainen@...dia.com>
Cc:	MyungJoo Ham <myungjoo.ham@...sung.com>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	Mikko Perttunen <mikko.perttunen@...si.fi>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	박경민 <kyungmin.park@...sung.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Mark Rutland <mark.rutland@....com>,
	Mike Turquette <mturquette@...aro.org>,
	Pawel Moll <pawel.moll@....com>,
	Peter De Schrijver <pdeschrijver@...dia.com>,
	Prashant Gaikwad <pgaikwad@...dia.com>,
	Rob Herring <robh+dt@...nel.org>,
	Russell King <linux@....linux.org.uk>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>
Subject: Re: [PATCH v6 0/8] Add support for Tegra Activity Monitor

On Wed, Mar 18, 2015 at 3:27 PM, Tomeu Vizoso
<tomeu.vizoso@...labora.com> wrote:
> On 18 March 2015 at 06:10, MyungJoo Ham <myungjoo.ham@...sung.com> wrote:
>>> Hello,
>>>
>>> something happened during the last cycle and an old version of the devfreq
>>> driver was merged.
>>>
>>> This thread contains patches that bring it up to date to the last submitted
>>> version and also incorporates the feedback that that version received, plus
>>> some other small fixes and improvements that came up during rebase and
>>> testing.
>>>
>>> These patches implement support for setting the rate of the EMC clock based on
>>> stats collected from the ACTMON, a piece of hw in the Tegra124 that counts
>>> memory accesses (among others).
>>>
>>> It depends on the following in-flight patches:
>>>
>>> * EMC driver: http://thread.gmane.org/gmane.linux.kernel/1907035
>>> * CPUFreq driver: http://thread.gmane.org/gmane.linux.kernel/1897078
>>>
>>> I have pushed a branch here for testing:
>>>
>>> http://cgit.collabora.com/git/user/tomeu/linux.git/log/?h=actmon-v6
>>>
>>> Regards,
>>>
>>> Tomeu
>>>
>>> Tomeu Vizoso (8):
>>>   of: Add binding for NVIDIA Tegra ACTMON node
>>>   PM / devfreq: tegra: Update to v5 of the submitted patches
>>>   clk: tegra: Have EMC clock implement determine_rate()
>>>   PM / devfreq: tegra: Use clock rate constraints
>>>   PM / devfreq: tegra: remove operating-points
>>>   PM / devfreq: tegra: Set drvdata before enabling the irq
>>>   PM / devfreq: tegra: Enable interrupts after resuming the devfreq
>>>     monitor
>>>   ARM: tegra: Add Tegra124 ACTMON support
>>
>> Acked-by: MyungJoo Ham <myungjoo.ham@...sung.com>
>> for all PM / devfreq patches (2, 4, 5, 6, 7)
>> And merged in for-rc tree with a little modification.
>
> Thanks. Though that's fine with me, I was wondering if Mikko or
> Alexandre would have any comments on the changes, even if they are
> small regarding what they already reviewed.

After a quick look I think I'm good with it. I will try to look in
further detail. If there is anything wrong, we can fix it with fixup
patches, since what has been merged is good stuff already!

I guess it would now be interesting to look at the watermark support
for devfreq. I am not sure if anything is happening to it? Arto?

https://lkml.org/lkml/2014/12/5/262
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