From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Gibson Subject: Re: ARM machine specific DT probing Date: Mon, 20 Sep 2010 11:35:21 +1000 Message-ID: <20100920013521.GD5045@yookeroo> References: <1283994479.4420.6.camel@pororo> <20100913022036.GD5505@yookeroo> <1284355802.2877.56.camel@pororo> <20100913060324.GB13154@yookeroo> <20100916174020.GA7550@angua.secretlab.ca> <20100916175617.7e36ed0e@schlenkerla.am.freescale.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20100916175617.7e36ed0e-1MYqz8GpK7RekFaExTCHk1jVikpgYyvb5NbjCUgZEJk@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org To: Scott Wood Cc: Jeremy Kerr , linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, Nicolas Pitre List-Id: devicetree@vger.kernel.org On Thu, Sep 16, 2010 at 05:56:17PM -0500, Scott Wood wrote: > On Thu, 16 Sep 2010 11:40:20 -0600 > Grant Likely wrote: [snip] > > - Revisit the meaning of top-level compatible. > > - I still don't think it makes sense for one board to claim > > compatibility with another, > > Most of the time it doesn't, but there may be circumstances where things > are only added, or where a new revision just fixes bugs but software > that works around the bugs will still work. > > If we don't allow claiming compatibility in those cases, it may > encourage people to lie and claim to just be that old board with no > more specific entry in the list (or just not put the board rev in the > name at all -- which might be reasonable if the rev info is presented > in a separate property, allowing things like greater-than/less-than > comparisons). I concur on the whole. Claiming compatibility at the top-level has its problems, but I don't think outright banning it is a nett win. -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson