From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: Question regarding back compatibility for DT Date: Tue, 21 Mar 2017 11:27:37 -0500 Message-ID: References: <20170321155814.GA10342@mai> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: In-Reply-To: <20170321155814.GA10342@mai> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Daniel Lezcano Cc: "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Alexander Kochetkov List-Id: devicetree@vger.kernel.org On Tue, Mar 21, 2017 at 10:58 AM, Daniel Lezcano wrote: > Hi Rob, dt people, > > is it acceptable a driver is changed using a new DT binding but becomes > incompatible with the old DT files ? > > IOW, is it possible to change the DT and the driver without supporting the old > DT format, forcing an update of the DT and the kernel ? If you want a global rule, then no it is not okay. However, it depends on the platform and it's users. I just ask that breaking compatibility and why is highlighted in the commit message and the platform maintainer is okay with it. Rob -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html