Message-ID: <559FEED3.5080505@atmel.com>
Date: Fri, 10 Jul 2015 18:12:03 +0200
From: Nicolas Ferre <nicolas.ferre@atmel.com>
Organization: atmel
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To: Maxime Ripard <maxime.ripard@free-electrons.com>,
        Alexandre Belloni <alexandre.belloni@free-electrons.com>,
        Josh Wu <josh.wu@atmel.com>
CC: <linux-arm-kernel@lists.infradead.org>, Guenter Roeck <linux@roeck-us.net>,
        Wei Yongjun <yongjun_wei@trendmicro.com.cn>,
        Ben Dooks <ben.dooks@codethink.co.uk>, <linux-kernel@vger.kernel.org>,
        "Krzysztof Kozlowski" <k.kozlowski.k@gmail.com>,
        Sebastian Reichel <sre@kernel.org>,
        Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>,
        David Woodhouse <dwmw2@infradead.org>,
        Fabian Frederick <fabf@skynet.be>, <linux-pm@vger.kernel.org>
Subject: Re: [PATCH 1/2] power: reset: at91: add sama5d3 reset function
References: <1436436947-11210-1-git-send-email-josh.wu@atmel.com> <20150710060350.GA3127@piout.net> <559F7AC4.6050008@atmel.com> <20150710120907.GC3127@piout.net> <20150710123148.GA28632@lukather>
In-Reply-To: <20150710123148.GA28632@lukather>
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Le 10/07/2015 14:31, Maxime Ripard a ?crit :
> 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.

I agree: let's keep it simple and use of_match_device().

Bye,
-- 
Nicolas Ferre
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