From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756098AbcGHT0P (ORCPT ); Fri, 8 Jul 2016 15:26:15 -0400 Received: from mail-pa0-f47.google.com ([209.85.220.47]:36667 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752537AbcGHT0D (ORCPT ); Fri, 8 Jul 2016 15:26:03 -0400 Subject: Re: [RFC PATCH 0/1] Portable Device Tree Connector -- conceptual To: Pantelis Antoniou , David Gibson References: <1467503750-31703-1-git-send-email-frowand.list@gmail.com> <20160707071548.GV14675@voom.fritz.box> <2D8CFA9A-C317-4C02-9893-169B4B77E01E@konsulko.com> <577FFCEB.9010600@gmail.com> Cc: robh+dt@kernel.org, stephen.boyd@linaro.org, broonie@kernel.org, Grant Likely , mark.rutland@arm.com, Matt Porter , koen@dominion.thruhere.net, linux@roeck-us.net, marex@denx.de, wsa@the-dreams.de, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, Frank Rowand From: Frank Rowand Message-ID: <577FFE3E.50600@gmail.com> Date: Fri, 8 Jul 2016 12:25:50 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 In-Reply-To: <577FFCEB.9010600@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/08/16 12:20, Frank Rowand wrote: > On 07/08/16 00:26, Pantelis Antoniou wrote: >> Hi David, >> >>> On Jul 7, 2016, at 10:15 , David Gibson wrote: >>> > > < snip > > >>> Given that we're going to need new code to support this new connector >>> model, I think we should also fix some of the uglies in the current >>> overlay format while we're at it. >>> >> >> We need to keep compatibility with the old format. There are 5 million >> RPIs sold, half a million beaglebones and C.H.I.P. is coming out too. >> They all use overlays in one form or another. >> >> That’s not counting all the custom boards that actively use them. >> >> We have a user base now. > > Please not that I AM NOT suggesting the we remove compatibility with ^^^ note > the old format!!! > > But I need to push back on the idea that we have a user base that we > need to keep compatibility with. If I understand correctly, that > user base is based on using much code that is not in mainline, including > an altered dtc and a cape manager. > > People using out of tree code can not use the fact that code exists and > is being widely used to force us to mainline that out of tree code. > That is the risk of using out of tree code. > > I do not want to start a big discussion about this now since there is > no plan to remove the compatibility at this point. > > -Frank >