Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753508Ab2KEMYK (ORCPT ); Mon, 5 Nov 2012 07:24:10 -0500 Received: from zoneX.GCU-Squad.org ([194.213.125.0]:10694 "EHLO services.gcu-squad.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750985Ab2KEMYJ (ORCPT ); Mon, 5 Nov 2012 07:24:09 -0500 Date: Mon, 5 Nov 2012 13:23:50 +0100 From: Jean Delvare To: Mika Westerberg Cc: Mark Brown , "Rafael J. Wysocki" , Bjorn Helgaas , linux-kernel@vger.kernel.org, lenb@kernel.org, rafael.j.wysocki@intel.com, grant.likely@secretlab.ca, linus.walleij@linaro.org, ben-linux@fluff.org, w.sang@pengutronix.de, mathias.nyman@linux.intel.com, linux-acpi@vger.kernel.org Subject: Re: [PATCH 2/3] spi / ACPI: add ACPI enumeration support Message-ID: <20121105132350.59c6e4d9@endymion.delvare> In-Reply-To: <20121105120219.GF24532@intel.com> References: <1351928793-14375-1-git-send-email-mika.westerberg@linux.intel.com> <20121103201310.GQ16648@intel.com> <1535917.BaYBBNgGy0@vostro.rjw.lan> <4052192.ry8JrGTr6H@vostro.rjw.lan> <20121105105602.GC24532@intel.com> <20121105105639.GE1385@opensource.wolfsonmicro.com> <20121105120219.GF24532@intel.com> X-Mailer: Claws Mail 3.7.10 (GTK+ 2.24.7; x86_64-suse-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1093 Lines: 23 On Mon, 5 Nov 2012 14:02:19 +0200, Mika Westerberg wrote: > On Mon, Nov 05, 2012 at 11:56:39AM +0100, Mark Brown wrote: > > I've got practical systems where there are multiple buses physically > > connected, though in practice almost always only one is actually used at > > runtime when it's I2C and SPI there are some systems (usually with other > > buses) where you might want to use more than one bus. Not sure those > > buses will fit in here though. > > Yeah, I just went through DSDT table of one of our machines and found a > device that actually has two I2CSerialBus connectors (and those are to the > same controller). What I'm not sure is that is it used to select between > two different addresses or doest the device really have two physical I2C > connections. Neither would make sense from a hardware perspective. -- Jean Delvare -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/