Messages in this thread | | | From | Andy Shevchenko <> | Date | Thu, 17 May 2018 19:36:30 +0300 | Subject | Re: [PATCH v1 0/3] console, serial8250: Disable PM and DMA ops |
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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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