From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cyril GERMAINE Subject: Re: Support request for codec WM8731 porting Date: Tue, 4 Dec 2012 14:54:51 +0100 Message-ID: <50BE00AB.50509@elno.fr> References: <50B8E1AB.6000006@elno.fr> <50B8EA28.5060208@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from co9outboundpool.messaging.microsoft.com (co9ehsobe004.messaging.microsoft.com [207.46.163.27]) by alsa0.perex.cz (Postfix) with ESMTP id A8796264F09 for ; Tue, 4 Dec 2012 14:55:08 +0100 (CET) Received: from mail152-co9 (localhost [127.0.0.1]) by mail152-co9-R.bigfish.com (Postfix) with ESMTP id 3556F18012A for ; Tue, 4 Dec 2012 13:55:07 +0000 (UTC) Received: from CO9EHSMHS018.bigfish.com (unknown [10.236.132.253]) by mail152-co9.bigfish.com (Postfix) with ESMTP id 8D35E200058 for ; Tue, 4 Dec 2012 13:55:05 +0000 (UTC) In-Reply-To: <50B8EA28.5060208@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Thank you Daniel for your reply. I found out what was the problem. I was trying to use the WM8731 in I2S mode (porting from another board), but davinci CPU doesn't support true I2S. Switching to DSP mode resolved my problems. Cyril On 30/11/2012 18:17, Daniel Mack wrote: > On 30.11.2012 17:41, Cyril GERMAINE wrote: >> Hello, >> >> I work on a board based from DM365EVM baseboard, but with the WM8731 >> codec instead of the TLV320AIC3x. >> I tried with several linux kernels (one is the 3.6.6 release). Now the >> playback works but not the capture, and I'm not able to debug this >> issue. I have many "0" frames in the captured data, although data and >> rate on I2S bus is OK. > Do you see the audio gaps in I2S as well? This is the first thing to > investigate on, because if they aren't, your problem is unrelated to the > Codec. > > What are the differences between your board and the DM365EVM regarding > the SoC and the clocks ratios? Does the DM365EVM work with 3.6.6? How do > your board support files and ASoC machine driver differ? > > Too many open questions here that need to be addressed. > > > Daniel > > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@alsa-project.org > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > >