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

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Message-ID: <20150710120907.GC3127@piout.net>
Date:	Fri, 10 Jul 2015 14:09:07 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Josh Wu <josh.wu@...el.com>
Cc:	Nicolas Ferre <nicolas.ferre@...el.com>,
	linux-arm-kernel@...ts.infradead.org,
	Guenter Roeck <linux@...ck-us.net>,
	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	Ben Dooks <ben.dooks@...ethink.co.uk>,
	linux-kernel@...r.kernel.org,
	Krzysztof Kozlowski <k.kozlowski.k@...il.com>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Fabian Frederick <fabf@...net.be>, linux-pm@...r.kernel.org,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [PATCH 1/2] power: reset: at91: add sama5d3 reset function

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

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