linux-kernel - Re: [PATCH v2 2/2] iio: add driver for the TI DAC8554

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Date:	Sat, 13 Dec 2014 12:25:47 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Hartmut Knaack <knaack.h@....de>,
	Nikolaus Schulz <nikolaus.schulz@...onic-design.de>
CC:	Jonathan Cameron <jic23@...nel.org>,
	Peter Meerwald <pmeerw@...erw.net>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Michael Welling <mwelling@...e.org>,
	Philippe Reynes <tremyfr@...oo.fr>,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org,
	Alban Bedel <alban.bedel@...onic-design.de>
Subject: Re: [PATCH v2 2/2] iio: add driver for the TI DAC8554

On 12/13/2014 12:18 PM, Hartmut Knaack wrote:
[...]
>>> According to your DT bindings, the regulator from property "vref-supply" should
>>> be used. This is missing here.
>>
>> Uhm, it's right below, no?
> Looking into your DT bindings patch (which unfortunately didn't make it into our
> list), you specify "vref-supply" as a required property. So, I expected that you
> intended to make use of this property somewhere around here.

The regulator framework takes care of this. If you request a regulator with 
$name the framework will look for a property with the name $name-supply.

>>
>>>> +	st->reg =evm_regulator_get(&spi->dev, "vref");
>>>> +	if (IS_ERR(st->reg))
>>>> +		return PTR_ERR(st->reg);
[...]

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