Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754291AbcKQE43 convert rfc822-to-8bit (ORCPT ); Wed, 16 Nov 2016 23:56:29 -0500 Received: from mga11.intel.com ([192.55.52.93]:40950 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753265AbcKQE42 (ORCPT ); Wed, 16 Nov 2016 23:56:28 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,651,1473145200"; d="scan'208";a="1060503101" Date: Thu, 17 Nov 2016 10:35:52 +0530 From: Vinod Koul To: Mark Brown Cc: Charles Keepax , Hardik Shah , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, tiwai@suse.de, pierre-louis.bossart@linux.intel.com, lgirdwood@gmail.com, plai@codeaurora.org, patches.audio@intel.com, Sanyog Kale Subject: Re: [RFC 01/14] SoundWire: Add SoundWire bus driver documentation Message-ID: <20161117050552.GA2698@localhost> References: <1477053673-16021-1-git-send-email-hardik.t.shah@intel.com> <1477053673-16021-2-git-send-email-hardik.t.shah@intel.com> <20161114141548.GL1575@localhost.localdomain> <20161115142914.GN3000@localhost> <20161116175929.kf7lfkcnqjdhasjk@sirena.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: 8BIT In-Reply-To: <20161116175929.kf7lfkcnqjdhasjk@sirena.org.uk> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 936 Lines: 21 On Wed, Nov 16, 2016 at 05:59:29PM +0000, Mark Brown wrote: > On Tue, Nov 15, 2016 at 07:59:14PM +0530, Vinod Koul wrote: > > On Mon, Nov 14, 2016 at 02:15:48PM +0000, Charles Keepax wrote: > > > > slaves register to that. This also has the nice property that its > > > easy to create devices that sit behind other buses, for example > > > here we might want a SoundWire master that sits behind a SPI bus. > > > But you seem to have gone in the other direction and have the > > > master sitting on the same bus as the slaves. > > > Since the controller on our SoC was enumerable, people went with this > > approach. In this hindsight that may not have been the best choice. > > Doing buses properly isn't an obstacle to doing enumeration, indeed I'd > expect it to make it a lot easier - just have your driver for your > controller do the enumeration at probe time. Yes it is not :) This is somthing we are fixing now.. -- ~Vinod