From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Subject: Re: [PATCH 3/4] sound/soc: tegra_max98090: document headphone jack rename Date: Thu, 4 Feb 2016 09:39:08 -0700 Message-ID: <56B37EAC.5010101@wwwdotorg.org> References: <1454563862-1971-1-git-send-email-sctincman@gmail.com> <1454563862-1971-4-git-send-email-sctincman@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1454563862-1971-4-git-send-email-sctincman-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Jonathan Tinkham Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, gnurou-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org List-Id: alsa-devel@alsa-project.org On 02/03/2016 10:31 PM, Jonathan Tinkham wrote: > Update device-tree bindings to reflect the rename of the board's > headphone jack. This looks like an incompatible change to the DT. While you've fixed the DT, which will fix new installations, old DTs now won't work. This breaks DT ABI. Any DT change needs to be backwards compatible, i.e. the old name should still work and be documented as a legacy value.