linux-kernel - Re: [RFC PATCH 4/4] ARM: Xilinx: Adding Xilinx board support

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Message-Id: <201105021752.25273.arnd@arndb.de>
Date:	Mon, 2 May 2011 17:52:25 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Rob Herring <robherring2@...il.com>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	linux-arm-kernel@...ts.infradead.org,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 4/4] ARM: Xilinx: Adding Xilinx board support

On Monday 02 May 2011, Rob Herring wrote:
> The SCU is accessed before ioremap is up. The only reason it is accessed 
> early is to determine the number of cores present.

The number of cores should definitely be available in the device tree,
normally by looking at the root interrupt controller.

> The L2 can certainly be ioremapped and probed via DT. How about 
> something like this:
> 
>         l2cc {
>                 compatible = "arm,pl310-l2";
>                 reg = <0xfff12000 0x1000>;
>                 aux-value = <0>;
>                 aux-mask = <0xffffffff>;
>         };

sounds good to me.

	Arnd
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