linux-kernel - Re: [PATCH v5 1/4] hwmon: ltc2978: device tree bindings documentation

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Date:	Sat, 04 Oct 2014 17:13:53 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Mark Brown <broonie@...nel.org>
CC:	Mark Rutland <mark.rutland@....com>,
	"atull@...nsource.altera.com" <atull@...nsource.altera.com>,
	"jdelvare@...e.de" <jdelvare@...e.de>,
	"lm-sensors@...sensors.org" <lm-sensors@...sensors.org>,
	"lgirdwood@...il.com" <lgirdwood@...il.com>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	Pawel Moll <Pawel.Moll@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"galak@...eaurora.org" <galak@...eaurora.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"delicious.quinoa@...il.com" <delicious.quinoa@...il.com>,
	"dinguyen@...nsource.altera.com" <dinguyen@...nsource.altera.com>,
	"yvanderv@...nsource.altera.com" <yvanderv@...nsource.altera.com>
Subject: Re: [PATCH v5 1/4] hwmon: ltc2978: device tree bindings documentation

On 10/04/2014 02:53 AM, Mark Brown wrote:
> On Fri, Oct 03, 2014 at 04:23:15PM -0700, Guenter Roeck wrote:
>> On 10/03/2014 04:13 PM, Mark Brown wrote:
>
>>> Nope, nothing to do with regulator that I'm aware of and I've not seen
>>> any examples (but I don't tend to review users too often).
>
>> Many examples, really. Just picking one.
>
>> Documentation/devicetree/bindings/mfd/tps6507x.txt
>
> OK, that's not an actual DTS...  I'm not seeing anything in the code.
>
>> 	regulators {
>>                  #address-cells = <1>;
>>                  #size-cells = <0>;
>> 		...
>
>> This also uses the reg property for the regulator index
>> (without explaining it further). Seems to be pretty common.
>
> If it's doing that it's nothing to do with the regulator API.
>
Since the code does not use those values either, presumably they don't have
to be specified in the first place. I'll test that with a real system
next week.

Guenter

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