linux-kernel - Re: [PATCH 3/3] gpio-vx855: Add device tree binding

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Message-ID: <20110921162906.GY7781@ponder.secretlab.ca>
Date:	Wed, 21 Sep 2011 10:29:06 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Daniel Drake <dsd@...top.org>, sameo@...ux.intel.com,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	dilinger@...ued.net
Subject: Re: [PATCH 3/3] gpio-vx855: Add device tree binding

On Wed, Sep 21, 2011 at 01:50:52PM +0100, Mark Brown wrote:
> On Wed, Sep 21, 2011 at 01:02:14PM +0100, Daniel Drake wrote:
> 
> > +- #gpio-cells : Should be two. The first cell is the pin number and the
> > +  second cell is used to specify optional parameters:
> > +  - bit 0 specifies polarity (0 for normal, 1 for inverted)
> 
> Shouldn't we just have a property for the polarity?

A flags cell in gpio specifiers (and irq specifiers for that matter) is
well established practice.

g.
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