From: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
To: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Marc Zyngier <marc.zyngier-5wv7dgnIgG8@public.gmane.org>
Subject: Re: [PATCH] dt-bindings: arm,gic-v3: require that reserved cells are always 0
Date: Wed, 3 Feb 2016 18:40:18 +0000 [thread overview]
Message-ID: <20160203184017.GA15852@arm.com> (raw)
In-Reply-To: <20160203182054.GH1234@leverpostej>
On Wed, Feb 03, 2016 at 06:20:54PM +0000, Mark Rutland wrote:
> On Wed, Feb 03, 2016 at 06:00:58PM +0000, Will Deacon wrote:
> > Consequently, any extensions to the PPI or SPI interrupt specifiers must
> > be able to work with random crap from legacy DTs, effectively
> > necessitating a new interrupt type in the first cell. Sigh.
>
> I'm not sure that's true if we allocate a new value for the 1st cell for
> "extended" PPI or SPI interrupt-sepcficiers (which presumably add
> restrictions). That would also allow old kernels to safely skip such
> interrupts rather than mis-parsing them.
Right, that's what I said :)
> > This patch fixes the text so that additional, reserved cells are
> > required to be zero. This looks like a reasonable thing to require and
> > is already satisifed by the .dts files in-tree.
> >
> > Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
> > Cc: Marc Zyngier <marc.zyngier-5wv7dgnIgG8@public.gmane.org>
> > Signed-off-by: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
>
> This patch itself makes sense, so FWIW:
>
> Acked-by: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
>
> Any proposed extention to the binding requires its own discussion.
Yup.
Marc -- can you queue this please?
Will
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prev parent reply other threads:[~2016-02-03 18:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-03 18:00 [PATCH] dt-bindings: arm,gic-v3: require that reserved cells are always 0 Will Deacon
[not found] ` <1454522458-29643-1-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2016-02-03 18:15 ` Marc Zyngier
2016-02-03 18:20 ` Mark Rutland
2016-02-03 18:40 ` Will Deacon [this message]
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