linux-kernel - Re: [PATCH 1/2] dt-bindings: arm,gic: Fix binding example for a virt-capable GIC

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Date:   Thu, 19 Jan 2017 14:40:16 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     Marc Zyngier <marc.zyngier@....com>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Rob Herring <robh+dt@...nel.org>,
        Tsahee Zidenberg <tsahee@...apurnalabs.com>,
        Antoine Tenart <antoine.tenart@...e-electrons.com>,
        Russell King <linux@...linux.org.uk>,
        Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Javier Martinez Canillas <javier@....samsung.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Simon Horman <horms@...ge.net.au>,
        Magnus Damm <magnus.damm@...il.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>, arm@...nel.org
Subject: Re: [PATCH 1/2] dt-bindings: arm,gic: Fix binding example for a
 virt-capable GIC

On Wed, Jan 18, 2017 at 10:53:30AM +0000, Marc Zyngier wrote:
> The joys of copy/paste: the example of a virtualization capable GIC
> in the DT binding was wrong, and propagated to dozens of platforms.

Could you please mention what's wrong (i.e. GICC is impossibly small in
the example).

> 
> Oh well. Let's fix the source of the crap before tackling individual
> offenders.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier@....com>
> ---
>  Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
> index 5393e2a..a3d51ed 100644
> --- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
> +++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
> @@ -107,11 +107,11 @@ Required properties:
>  Example:
>  
>  	interrupt-controller@...01000 {
> -		compatible = "arm,cortex-a15-gic";
> +		compatible = "arm,gic-400";

I'm happy with this change in the spirit of making this more generally
applicable, even if it's not a bug as such. Please mention this as a
related cleanup in the commit message.

With those fixed up:

Acked-by: Mark Rutland <mark.rutland@....com>

Thanks,
Mark.

>  		#interrupt-cells = <3>;
>  		interrupt-controller;
>  		reg = <0x2c001000 0x1000>,
> -		      <0x2c002000 0x1000>,
> +		      <0x2c002000 0x2000>,
>  		      <0x2c004000 0x2000>,
>  		      <0x2c006000 0x2000>;
>  		interrupts = <1 9 0xf04>;
> -- 
> 2.1.4
>