linux-kernel - Re: [PATCH] openrisc: Add DTS and defconfig for DE0-Nano

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Message-ID: <20131115150745.GB24831@e106331-lin.cambridge.arm.com>
Date:	Fri, 15 Nov 2013 15:07:45 +0000
From:	Mark Rutland <mark.rutland@....com>
To:	Jonas Bonn <jonas@...thpole.se>
Cc:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	"linux@...nrisc.net" <linux@...nrisc.net>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kevin Mehall <contact@...inmehall.net>,
	Marek Czerski <ma.czerski@...il.com>,
	Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>
Subject: Re: [PATCH] openrisc: Add DTS and defconfig for DE0-Nano

On Fri, Nov 15, 2013 at 09:50:18AM +0000, Jonas Bonn wrote:
[...]

> > +	gpio0: gpio@...00000 {
> > +		compatible = "opencores,jbtrivial";
> 
> There's no project called 'jbtrivial' at OpenCores.  Should this be 
> "linux,jbtrivial" to indicate that this refers to a Linux driver?

I would prefer not. Having driver names in bindings is an antipattern;
drivers should be free to change independently of the hardware or
bindings, and we should be able to create new drivers that handle
existing bindings.

Either a new compatible string should be allcoated, or one of the
generic bindings should be used. While we do have drivers for the
generic cases, the *-generic bindings are treated as a specification
that hardware can meet, and are not intended to change. They are also
there fore independent of Linux.

Thanks,
Mark.
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