linux-kernel - Re: [PATCH v5 1/2] regulator: max14577: Add regulator driver for Maxim 14577

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Date:	Mon, 02 Dec 2013 15:12:35 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	Lee Jones <lee.jones@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Landley <rob@...dley.net>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH v5 1/2] regulator: max14577: Add regulator driver for Maxim
 14577

Hi Mark,

On Wed, 2013-11-27 at 16:28 +0000, Mark Brown wrote:
> On Wed, Nov 27, 2013 at 04:13:23PM +0000, Lee Jones wrote:
> > On Wed, 27 Nov 2013, Mark Brown wrote:
> 
> > > The usual thing to do is of_get_child_by_name() on the parent to get the
> > > container to search in.
> 
> > What do you mean when you say 'usual thing'? Only the max8998 does
> > this currently. IMHO the better way to do it for MFD devices is
> > provide a compatible string and let the framework does the rest for
> > you.
> 
> No, as3722, Palmas and three of the TPS chips do the same thing.  If it
> were a purely Linux-internal thing I'd probably agree with you but as it
> is we'd just be adding compatible strings in everyone's DTs to save one
> line of code in the kernel.

Lee applied the MFD part of max14577, including the "of_compatible" of
max14577-regulator.

Do you wish me to change the patch to previous version using
of_get_child_by_name()?

Best regards,
Krzysztof



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