From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [PATCH v3] ASoC: Add support for cs42l73 codec Date: Fri, 7 Oct 2011 11:27:41 +0100 Message-ID: <20111007102740.GF19080@opensource.wolfsonmicro.com> References: <1317917945-32580-1-git-send-email-brian.austin@cirrus.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from opensource.wolfsonmicro.com (opensource.wolfsonmicro.com [80.75.67.52]) by alsa0.perex.cz (Postfix) with ESMTP id B2FAB103AFD for ; Fri, 7 Oct 2011 12:27:42 +0200 (CEST) Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Tabi Timur-B04825 Cc: Brian Austin , "vinod.koul@linux.intel.com" , "alsa-devel@alsa-project.org" , "ramesh.babu@intel.com" , "joe@nucleusys.com" , "heelrod@heelrod.ad.cirrus.com" , "lrg@ti.com" List-Id: alsa-devel@alsa-project.org On Fri, Oct 07, 2011 at 02:13:32AM +0000, Tabi Timur-B04825 wrote: > > +/* I2C Registers */ > > +/* I2C Address: 1001010[R/W] - 10010100 = 0x94(Write); 10010101 = 0x95(Read) */ > This chip has separate I2C addresses for reading and writing? This is standard - the I2C address can be quoted in either 8 bit form (where the lowest bit is a read write flag) or 7 bit form. The confusing thing here is that the Linux code uses the 7 bit form exclusively.