linux-kernel - Re: [PATCH 5/6] crypto: ux500/cryp - Enable DT probing of the driver

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Date:	Fri, 24 May 2013 13:16:42 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Lee Jones <lee.jones@...aro.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	Rob Herring <rob.herring@...xeda.com>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Linus WALLEIJ <linus.walleij@...ricsson.com>,
	Srinidhi KASAGAR <srinidhi.kasagar@...ricsson.com>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>
Subject: Re: [PATCH 5/6] crypto: ux500/cryp - Enable DT probing of the driver

On Fri, May 24, 2013 at 10:32 AM, Lee Jones <lee.jones@...aro.org> wrote:
> On Fri, 24 May 2013, Linus Walleij wrote:
>> On Thu, May 16, 2013 at 1:27 PM, Lee Jones <lee.jones@...aro.org> wrote:
>>
>> > By providing an OF match table with a suitable compatible string, we
>> > can ensure the ux500-crypt driver is probed by supplying an associated
>> > DT node in a given platform's Device Tree.
>> >
>> > Cc: Herbert Xu <herbert@...dor.apana.org.au>
>> > Cc: linux-crypto@...r.kernel.org
>> > Signed-off-by: Lee Jones <lee.jones@...aro.org>
>>
>> Herbert, can I have your ACK on patch 5 & 6 in this series to take it
>> through the ARM SoC tree?
>
> Right, there are no bindings, so they don't need a document.

Surely the requirement that the node must have <reg>,
<irqs> and <regulator> for the driver to even probe is a
binding?

The fact that the drivers/of/* core on Linux will auto-populate
platform devices with those properties is a pure Linux
pecularity, and the bindings are there for OS independence.

Whether we need to document it for such standard things
is another thing, hopefully Rob or someone can answer that?

Yours,
Linus Walleij
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