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Re: [PATCH v3 0/2] thermal: mediatek: Add cpu power cooling model

Started byPunit Agrawal <punit.agrawal@arm.com>
First post2015-11-02 17:00 +0100
Last post2015-11-04 20:40 +0100
Articles 3 — 3 participants

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  Re: [PATCH v3 0/2] thermal: mediatek: Add cpu power cooling model Punit Agrawal <punit.agrawal@arm.com> - 2015-11-02 17:00 +0100
    Re: [PATCH v3 0/2] thermal: mediatek: Add cpu power cooling model Viresh Kumar <viresh.kumar@linaro.org> - 2015-11-02 17:20 +0100
    Re: [PATCH v3 0/2] thermal: mediatek: Add cpu power cooling model Eduardo Valentin <edubezval@gmail.com> - 2015-11-04 20:40 +0100

#1260742 — Re: [PATCH v3 0/2] thermal: mediatek: Add cpu power cooling model

FromPunit Agrawal <punit.agrawal@arm.com>
Date2015-11-02 17:00 +0100
SubjectRe: [PATCH v3 0/2] thermal: mediatek: Add cpu power cooling model
Message-ID<qqpGx-77v-1@gated-at.bofh.it>
Viresh Kumar <viresh.kumar@linaro.org> writes:

> On 22-10-15, 20:02, Dawei Chien wrote:
>> Use Intelligent Power Allocation (IPA) technical to add static/dynamic power model for binding CPU thermal zone.
>> The power allocator governor allocates power budget to control CPU temperature.
>> 
>> Power Allocator governor is able to keep SOC temperature within a
>> defined temperature range to avoid SOC overheat and keep it's
>> performance. mt8173-cpufreq.c need to register its' own power model
>> with power allocator thermal governor, so that power allocator
>> governor can allocates suitable power budget to control CPU
>> temperature.
>> 
>> PATCH1 is base on
>> https://patchwork.kernel.org/patch/7034601/
>> 
>> PATCH2 is base on Sascha's thermal driver V9
>> https://patchwork.kernel.org/patch/7249821/
>> https://patchwork.kernel.org/patch/7249861/
>> https://patchwork.kernel.org/patch/7249891/
>> 
>> Change since V1:
>> include mt8171.h and sort header file for mt8173.dtsi
>> 
>> Change since V2:
>> Move dynamic/static power model in device tree
>> 
>> Dawei.Chien (2):
>>   thermal: mediatek: Add cpu power cooling model.
>>   arm64: dts: mt8173: Add thermal zone node for mt8173.
>
> Sorry for being extremely late in reviewing this stuff. You are
> already on v3 and I haven't reviewed it once. Mostly due to bad timing
> of my holidays and other work pressure.
>
> Now, there are few things that I feel are not properly addressed here,
> and I may be wrong:
> - Where are the bindings for static-power-points and
>   dynamic-power-coefficient. Sorry I failed to see them in this or
>   other series you mentioned.

For dynamic power, I had posted some patches[0][1][2] introducing the
binding as well as updating cooling device registration via cpufreq
driver. Now that the SCPI hwmon driver is merged, I should re-send the
remaining patches.

[0] http://lkml.iu.edu/hypermail/linux/kernel/1508.0/01020.html
[1] http://lkml.iu.edu/hypermail/linux/kernel/1508.0/01022.html
[3] http://lkml.iu.edu/hypermail/linux/kernel/1508.0/01031.html

> - Even then, why should we be adding another table into DT for
>   voltage/power ? And not reuse and extend the opp-v2 stuff which is
>   already mainlined now.
> - There are few issues with the code as well, but I want to see where
>   the bindings should go first. And then only discuss the code
>   further.
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#1260757

FromViresh Kumar <viresh.kumar@linaro.org>
Date2015-11-02 17:20 +0100
Message-ID<qqpZU-7ux-3@gated-at.bofh.it>
In reply to#1260742
On 02-11-15, 15:53, Punit Agrawal wrote:
> For dynamic power, I had posted some patches[0][1][2] introducing the
> binding as well as updating cooling device registration via cpufreq
> driver. Now that the SCPI hwmon driver is merged, I should re-send the
> remaining patches.
> 
> [0] http://lkml.iu.edu/hypermail/linux/kernel/1508.0/01020.html
> [1] http://lkml.iu.edu/hypermail/linux/kernel/1508.0/01022.html
> [3] http://lkml.iu.edu/hypermail/linux/kernel/1508.0/01031.html

Sure. Just that whatever can be merged with opp-v2 should be merged.

-- 
viresh
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#1262544

FromEduardo Valentin <edubezval@gmail.com>
Date2015-11-04 20:40 +0100
Message-ID<qrc4y-4EN-19@gated-at.bofh.it>
In reply to#1260742
On Mon, Nov 02, 2015 at 03:53:33PM +0000, Punit Agrawal wrote:
> Viresh Kumar <viresh.kumar@linaro.org> writes:
> 
> > On 22-10-15, 20:02, Dawei Chien wrote:
> >> Use Intelligent Power Allocation (IPA) technical to add static/dynamic power model for binding CPU thermal zone.
> >> The power allocator governor allocates power budget to control CPU temperature.
> >> 
> >> Power Allocator governor is able to keep SOC temperature within a
> >> defined temperature range to avoid SOC overheat and keep it's
> >> performance. mt8173-cpufreq.c need to register its' own power model
> >> with power allocator thermal governor, so that power allocator
> >> governor can allocates suitable power budget to control CPU
> >> temperature.
> >> 
> >> PATCH1 is base on
> >> https://patchwork.kernel.org/patch/7034601/
> >> 
> >> PATCH2 is base on Sascha's thermal driver V9
> >> https://patchwork.kernel.org/patch/7249821/
> >> https://patchwork.kernel.org/patch/7249861/
> >> https://patchwork.kernel.org/patch/7249891/
> >> 
> >> Change since V1:
> >> include mt8171.h and sort header file for mt8173.dtsi
> >> 
> >> Change since V2:
> >> Move dynamic/static power model in device tree
> >> 
> >> Dawei.Chien (2):
> >>   thermal: mediatek: Add cpu power cooling model.
> >>   arm64: dts: mt8173: Add thermal zone node for mt8173.
> >
> > Sorry for being extremely late in reviewing this stuff. You are
> > already on v3 and I haven't reviewed it once. Mostly due to bad timing
> > of my holidays and other work pressure.
> >
> > Now, there are few things that I feel are not properly addressed here,
> > and I may be wrong:
> > - Where are the bindings for static-power-points and
> >   dynamic-power-coefficient. Sorry I failed to see them in this or
> >   other series you mentioned.
> 
> For dynamic power, I had posted some patches[0][1][2] introducing the
> binding as well as updating cooling device registration via cpufreq
> driver. Now that the SCPI hwmon driver is merged, I should re-send the
> remaining patches.
> 
> [0] http://lkml.iu.edu/hypermail/linux/kernel/1508.0/01020.html

Are you sure this binding is applicable only to ARM cpus?

> [1] http://lkml.iu.edu/hypermail/linux/kernel/1508.0/01022.html
> [3] http://lkml.iu.edu/hypermail/linux/kernel/1508.0/01031.html
> 
> > - Even then, why should we be adding another table into DT for
> >   voltage/power ? And not reuse and extend the opp-v2 stuff which is
> >   already mainlined now.
> > - There are few issues with the code as well, but I want to see where
> >   the bindings should go first. And then only discuss the code
> >   further.
> --
> To unsubscribe from this list: send the line "unsubscribe linux-pm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
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Please read the FAQ at  http://www.tux.org/lkml/

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