linux-kernel - Re: [PATCH] irqchip: add support for Marvell Orion SoCs

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Message-ID: <20130502193726.GA29622@obsidianresearch.com>
Date:	Thu, 2 May 2013 13:37:26 -0600
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Arnd Bergmann <arnd@...db.de>, Andrew Lunn <andrew@...n.ch>,
	Russell King <linux@....linux.org.uk>,
	Jason Cooper <jason@...edaemon.net>,
	Jean-Francois Moine <moinejf@...e.fr>,
	devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Rob Herring <rob.herring@...xeda.com>,
	Grant Likely <grant.likely@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] irqchip: add support for Marvell Orion SoCs

On Thu, May 02, 2013 at 09:34:30PM +0200, Sebastian Hesselbarth wrote:

> >The compatible string should change if the binding changes in an
> >incomptible way, and we should try not to change it unless it's
> >fundamentally flawed.
> 
> Well, there is no _fundamental_ change in the binding syntax as it
> is only reg, interrupts, and clocks. But there is a semantic change
> in reg properties, as current orion irq controller wants the mask
> registers (0x04,0x08) only while this also needs cause register
> (0x00).

Oh, I didn't notice that, good point - the original binding was flawed
in that regard :|

Jason
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