linux-kernel - Re: [PATCH v3 2/5] ARM: dts: add reference voltage property for MXS LRADC

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Date:	Thu, 22 Aug 2013 17:50:24 +0100
From:	Pawel Moll <pawel.moll@....com>
To:	Hector Palacios <hector.palacios@...i.com>
Cc:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Jonathan Cameron <jic23@...nel.org>,
	"linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"lars@...afoo.de" <lars@...afoo.de>,
	"fabio.estevam@...escale.com" <fabio.estevam@...escale.com>,
	"marex@...x.de" <marex@...x.de>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	Mark Rutland <Mark.Rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ian.campbell@...rix.com>
Subject: Re: [PATCH v3 2/5] ARM: dts: add reference voltage property for MXS
 LRADC

On Thu, 2013-08-22 at 09:05 +0100, Hector Palacios wrote:
> This was what I originally submitted but it then looked like it would better fit in 
> the DeviceTree. The spear-adc seemed to use a similar approach:

I'm not sure if it's the best example... I much more prefer the AD7303's
way:

Documentation/devicetree/bindings/iio/dac/ad7303.txt

Optional properties:
        - REF-supply: Phandle to the external reference voltage supply. This should
          only be set if there is an external reference voltage connected to the REF
          pin. If the property is not set Vdd/2 is used as the reference voltage.

Paweł


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