linux-kernel - Re: [PATCHv4 1/2] dt/bindings: Add the DT binding documentation for endianness

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Message-ID: <20140509170255.GR12304@sirena.org.uk>
Date:	Fri, 9 May 2014 18:02:55 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Mark Rutland <mark.rutland@....com>
Cc:	Xiubo Li <Li.Xiubo@...escale.com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"galak@...eaurora.org" <galak@...eaurora.org>,
	"rdunlap@...radead.org" <rdunlap@...radead.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	Pawel Moll <Pawel.Moll@....com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCHv4 1/2] dt/bindings: Add the DT binding documentation for
 endianness

On Fri, May 09, 2014 at 05:32:43PM +0100, Mark Rutland wrote:
> On Fri, May 09, 2014 at 03:04:32AM +0100, Xiubo Li wrote:

> > {big,little}-endian{,-*}: these are boolean properties, if absent
> > meaning that the CPU and the Device are in the same endianness mode.

> That's not really true though. A device might usually be little-endian,
> regardless of the endianness of a CPU. Some vendors may integrate it as
> big-endian after a binding is added, and in the absence of a specified
> endianness a driver is likely to assume LE.

The default should be device specific rather than binding specific.

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