Re: [PATCH 1/2] power: reset: at91: add sama5d3 reset function

From: Maxime Ripard
Date: Fri Jul 10 2015 - 08:35:20 EST


On Fri, Jul 10, 2015 at 02:09:07PM +0200, Alexandre Belloni wrote:
> Hi,
>
> On 10/07/2015 at 15:56:52 +0800, Josh Wu wrote :
> > I would agree with Maxime. Currently all latest chip reset function is
> > compatible with the atmel,sama5d3-rstc.
> > So check compatible string is enough for now.
> > But of cause if we have other incompatible reset in future with new chip,
> > the structure like you said is needed.
>
> We managed to avoid using of_machine_is_compatible() in all the at91
> drivers. I'd like to keep it that way. It was painful enough to remove
> all those cpu_is_at91xxx calls.

That's your call...

> Also, using it is trying to match strings and will result in longer boot
> times.

Have you looked at the implementation of of_match_device? If that's
really a concern to you, you should actually avoid it.

Maxime

--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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