linux-kernel - Re: [PATCH v6 3/3] mfd: max14577: Add device tree bindings document

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Message-id: <1386155011.25938.4.camel@AMDC1943>
Date:	Wed, 04 Dec 2013 12:03:31 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	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>,
	Anton Vorontsov <anton@...msg.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Lee Jones <lee.jones@...aro.org>
Subject: Re: [PATCH v6 3/3] mfd: max14577: Add device tree bindings document

On Wed, 2013-12-04 at 20:01 +0900, Chanwoo Choi wrote:
> On 12/04/2013 07:56 PM, Krzysztof Kozlowski wrote:
> > On Wed, 2013-12-04 at 19:50 +0900, Chanwoo Choi wrote:
(...)
> >>
> >> I prefer to add dt data about max14577-muic on following:
> >> If extcon consumer driver need to use muic device, dts should provide following dt data.
> >>
> >> 		muic: max14577-muic {
> >> 			compatible = "maxim, max14577-muic";
> >> 		};
> >>> +	};
> >>>
> >> For example,
> >> If fuel-gauge want to use extcon subsystem, dt data of fuel-gauge add 'extcon' property as following:
> >>
> >> 	fuel-gague@ {
> >> 		compatible = "...";
> >> 		extcon = <&muic>;
> >> 	}
> >>
> > Hi,
> > 
> > The extcon driver itself does not use the binding. It is only needed for
> > consumers. Is it a common practice to add to documentation such notice
> > for consumers only?
> 
> As you comment, It is only for extcon consumer.
> But extcon provider driver always is operated with extcon consumer driver.
> If dts file don't support upper dt data about extcon provider driver,
> all of extcon consumer drivers could not use extcon subsystem.
> 
> I thinks it is common dt data for muic device.

OK, I'll add it.

Best regards,
Krzysztof

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