From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Hesselbarth Subject: Re: [PATCH v3 03/12] bus: mvebu-mbus: Add static window allocation to the DT binding Date: Tue, 18 Jun 2013 20:44:30 +0200 Message-ID: <51C0AA8E.9080807@gmail.com> References: <1371554737-25319-1-git-send-email-ezequiel.garcia@free-electrons.com> <20130618174622.GD2204@obsidianresearch.com> <51C0A5F8.8030300@gmail.com> <201306182039.50736.arnd@arndb.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <201306182039.50736.arnd-r2nGTMty4D4@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Sender: "devicetree-discuss" To: Arnd Bergmann Cc: Lior Amsalem , Andrew Lunn , Jason Cooper , devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, Jason Gunthorpe , Maen Suleiman , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org On 06/18/2013 08:39 PM, Arnd Bergmann wrote: > On Tuesday 18 June 2013, Sebastian Hesselbarth wrote: >> Also allows you to have up to 40b offset, which might be important >> with LPAE enabled. > > Not with the current generation I think, since the mbus windows are > 32 bit only, but it would avoid having to come up with a new format > for a potential future-generation mbus that has wider address. Yeah, I also recall Thomas or Gregory mention a 32b limitation in remap windows. But we don't need to waste addresses here And even if SIAA0000 is a concern because there may be target id >15 someday, we can still have IIAASS00 instead of IIAA00SS. I guess LPAE will not rise above 40b quickly ;) Sebastian