Re: PM / devfreq: exynos-bus: need for suspend OPP?

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On Tue, Nov 22, 2016 at 7:15 AM, Tobias Jakobi
<tjakobi@xxxxxxxxxxxxxxxxxxxxx> wrote:
> OK, I don't think this is as easy implementable as MyungJoo implied.
>
> - exynos_bus_suspend() and exynos_bus_resume() are not called during
> shutdown/reboot.

You don't need them at shutdown/reboot. probe() is going to be called
afterwards anyway.

>
> - devfreq_suspend_device() and devfreq_resume_device() have to be called
> from driver code.

Yes. That's the limitation.

The easiest way is to fix the freq/volt at device driver.

Unless devfreq manages struct device directly at subsystem, it won't
be easy to manage device's suspend/resume directly.


MyungJoo
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