Re: [PATCH v2 00/10] QCOM 8074 cpuidle driver

[Lina Iyer <lina.iyer@linaro.org>]

On Tue, Aug 12, 2014 at 06:52:02PM -0700, Stephen Boyd wrote:
>On 08/12/14 12:43, Lina Iyer wrote:
>> This is version #2 of the patches for cpuidle driver and its dependencies.
>>
>> Changes from version #1/RFC:
>>
>> - Remove hotplug from the patch series. Will submit it seprately.
>> - Fix SPM drivers per the review comments
>> - Modify patch sequence to compile SPM drivers independent of msm-pm, so as to
>>   allow wfi() calls to use SPM even without SoC interface driver.
>>
>> 8074 like any ARM SoC can do architectural clock gating, that helps save on
>> power, but not enough of leakage power.  Leakage power of the SoC can be
>> further reduced by turning off power to the core. To aid this, every core (cpu
>> and L2) is accompanied by a Sub-system Power Manager (SPM), that can be
>> configured to indicate the low power mode, the core would be put into and the
>> SPM programs the peripheral h/w accordingly to enter low power and turn off the
>> power rail to the core.
>>
>
>General question before I go diving into the code, can this code use the
>pending generic cpuidle state bindings[1]? Last I saw those bindings
>looked pretty good.
My bindings look similiar to the cpuidle bindings for exynos in this
patch.

>
>[1] http://lwn.net/Articles/606080/
Thanks for the link. I am working on a similar DT binding for an SoC
Idle driver.

>
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