From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Andrzej Siewior Subject: Re: [PATCH] ARM: dts: dra7xx: Fix compatible string for PCF8575 chip Date: Mon, 9 May 2016 08:49:29 +0200 Message-ID: <573032F9.50604@linutronix.de> References: <1461588834-20908-1-git-send-email-rogerq@ti.com> <1462386203.2360.12.camel@codethink.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1462386203.2360.12.camel-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Ben Hutchings , Roger Quadros Cc: tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org, nm-l0cyMroinI0@public.gmane.org, grygorii.strashko-l0cyMroinI0@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org On 05/04/2016 08:23 PM, Ben Hutchings wrote: > On Mon, 2016-04-25 at 15:53 +0300, Roger Quadros wrote: >> The boards use a TI variant of the PCF8575 so specify that >> in the compatible string. >> >> Signed-off-by: Roger Quadros > [...] > > 1. This compatible string is still not documented (AFAIK). > 2. As I understand it, TI is a second source for this NXP-designed chip, > i.e. it manufactures chips with identical logic (not clones) under > license. They should not be distinguishable in software. Mistakes don't happen on purpose. > 3. For the same reason, there is no guarantee that the board > manufacturer won't populate boards with PCF8575 chips from the other > source in future. If it is a redesign it is likely that they replace more than just one part. > > Ben. > Sebastian -- 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