linux-kernel - Re: [PATCH] gpio: gpio-rcar: init at postcore level

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Message-ID: <530AF8DA.8050709@cogentembedded.com>
Date:	Mon, 24 Feb 2014 11:46:34 +0400
From:	Vladimir Barinov <vladimir.barinov@...entembedded.com>
To:	Ben Dooks <ben.dooks@...ethink.co.uk>
CC:	linux-sh@...r.kernel.org, linus.walleij@...aro.org,
	linux-gpio@...r.kernel.org, magnus.damm@...il.com,
	horms@...ge.net.au, gnurou@...il.com, linux-kernel@...r.kernel.org,
	kuninori.morimoto.gx@...esas.com
Subject: Re: [PATCH] gpio: gpio-rcar: init at postcore level

Hello Ben,

On 02/23/2014 11:09 PM, Ben Dooks wrote:
> On 23/02/14 16:37, vladimir.barinov@...entembedded.com wrote:
>> From: Vladimir Barinov <vladimir.barinov@...entembedded.com>
>>
>> This adds ability to use gpio API at board init_machine level.
>>
>> F.e. it can be used in the following situation.
>> Many reference hardware has onboard switches that selects which 
>> periferals
>> to connect to the system. The gpio input state from switches can be used
>> in choosing platform devices runtime in board code instead of 
>> ifdefs/defconfig
>> changes.
>
> Firstly, anyone still using platform_devices to describe their
> system needs to be stopped. We cannot go on supporting this when
> our primary boot method is supposed to be device-tree. If we keep
> doing this then we will not get any of the current issues fixed.
Understand. I see that this is not a time for such changes.
Hope that the DT model will take into account such kind of situation in 
the future.
>
> Will it impact the devicetree bindings on rcar?
No

Regards,
Vladimir
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