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SubjectRe: [PATCH v1 0/3] console, serial8250: Disable PM and DMA ops
On Thu, May 17, 2018 at 4:48 PM, Tony Lindgren <tony@atomide.com> wrote:
> * Sebastian Andrzej Siewior <bigeasy@linutronix.de> [180516 10:49]:
>> On 2018-05-16 13:17:36 [+0300], Andy Shevchenko wrote:
>> > > The output is usually short so there
>> > > shouldn't be much benefit from using it.
>> >
>> > > I remember Tony wanted runtime-pm on the kernel console, too. And he
>> > > told me explicit how to test it so that it works. Once the UART goes
>> > > into PM (down), the whole IP block can go into power save mode. The
>> > > board can be woken up by sending a character via the UART. The first few
>> > > (incoming / read) characters are lost until the IP block is up again the
>> > > frequency stable. This is known / expected.
>> >
>> > Don't consider world the OMAP only. The things more complicated if we
>> > go out of it. Which I tried to explain in the commit message of patch
>> > 2.
>>
>> I am not saying the world is OMAP only. I just tried to explain how any
>> why it got there and its purpose. I haven't NACKed it. I would believe
>> that with that information and Tony not defending his use case or
>> possible change it somehow so it is not standing in your way, Greg would
>> have enough information to go your way.
>
> The idea breaking PM seems silly to me considering that we've had
> it working for years already.

Same question / note. World is much more complex than just being OMAP.

--
With Best Regards,
Andy Shevchenko

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