linux-kernel - Re: [PATCH 1/2] regulator: userspace-consumer: add DT binding details

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Message-ID: <20140806105915.GH17528@sirena.org.uk>
Date:	Wed, 6 Aug 2014 11:59:15 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	Mark Rutland <mark.rutland@....com>,
	"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>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] regulator: userspace-consumer: add DT binding details

On Wed, Aug 06, 2014 at 01:03:52PM +0530, Laxman Dewangan wrote:
> On Wednesday 30 July 2014 10:10 PM, Mark Brown wrote:

> >Yes, this is test code - it is not intended to be used in production.
> >Any binding should be for the consumer using this, not for this
> >implementation detail.

> We have the GPS module and its driver in the user space. There is no code
> for GPS on kernel. Just power on and open port from user space, get the
> information.

That's an implementation detail of how you've provided this on Linux.

> On this case, how do we power on GPS module if we don't expose it? It need
> two power source for digital section and analog section.

Describe the hardware in the device tree and then bind what's needed to
that.

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