linux-kernel - Re: [PATCH 3/5] dt-bindings: add devicetree bindings for Fairchild FAN53555 regulators

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Message-ID: <2217201.MLW1SzL0fz@diego>
Date:	Tue, 16 Sep 2014 00:14:43 +0200
From:	Heiko Stübner <heiko@...ech.de>
To:	Mark Brown <broonie@...nel.org>
Cc:	linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
	devicetree@...r.kernel.org, robh+dt@...nel.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org
Subject: Re: [PATCH 3/5] dt-bindings: add devicetree bindings for Fairchild FAN53555 regulators

Am Montag, 15. September 2014, 14:54:10 schrieb Mark Brown:
> On Sun, Sep 14, 2014 at 09:23:03PM +0200, Heiko Stuebner wrote:
> > +Optional properties:
> > +  - fairchild,suspend-regulator: regulator number to use for suspend
> > voltages +		possible values are either <0> or <1>
> 
> I'm not sure what this means - What exactly is a "regulator" in this
> context?  Are there really two separate regulators?

The fan53555 has two voltage selection registers (VSEL0 and VSEL1) which can 
be switched through a gpio ... to use one as suspend voltage.

So it's just one regulator output but can select one of two voltages.
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