From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F0266C4646A for ; Wed, 12 Sep 2018 07:34:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 941BA2087F for ; Wed, 12 Sep 2018 07:34:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 941BA2087F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727127AbeILMhN (ORCPT ); Wed, 12 Sep 2018 08:37:13 -0400 Received: from mail.bootlin.com ([62.4.15.54]:42027 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726555AbeILMhM (ORCPT ); Wed, 12 Sep 2018 08:37:12 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id AF70C207A8; Wed, 12 Sep 2018 09:33:56 +0200 (CEST) Received: from localhost (242.171.71.37.rev.sfr.net [37.71.171.242]) by mail.bootlin.com (Postfix) with ESMTPSA id 81CD82072C; Wed, 12 Sep 2018 09:33:56 +0200 (CEST) Date: Wed, 12 Sep 2018 09:33:55 +0200 From: Alexandre Belloni To: Lee Jones Cc: Geert Uytterhoeven , radu_nicolae.pirea@upb.ro, Rob Herring , Mark Rutland , Nicolas Ferre , Greg KH , Mark Brown , Jiri Slaby , Richard Genoud , "David S. Miller" , Mauro Carvalho Chehab , Andrew Morton , Arnd Bergmann , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Linux ARM , Linux Kernel Mailing List , "open list:SERIAL DRIVERS" , linux-spi Subject: Re: [PATCH v12 0/6] Driver for at91 usart in spi mode Message-ID: <20180912073355.GB2557@piout.net> References: <20180904111310.4049-1-radu_nicolae.pirea@upb.ro> <20180911093356.GE4185@dell> <20180911093917.GL2494@piout.net> <20180911153621.GP2494@piout.net> <20180911181838.GI4185@dell> <20180911185839.GA25212@piout.net> <20180911224418.GK4185@dell> <20180911225440.GL4185@dell> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180911225440.GL4185@dell> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/09/2018 23:54:40+0100, Lee Jones wrote: > > > http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-6438-32-bit-ARM926-Embedded-Microprocessor-SAM9G45_Datasheet.pdf > > > > > > USART doc starting p572, registers p621. > > After looking at the datasheet, I don't see any reason why one of the > two drivers can't be selected using different compatible strings. Because there is only one IP and we don't use the device tree to selecet linux specific drivers. If you are not happy having that in MFD, I guess we can move it out somewhere else. -- Alexandre Belloni, Bootlin Embedded Linux and Kernel engineering https://bootlin.com