From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?st=E9phane_cerveau?= Subject: IMX WM8740 I2S support Date: Wed, 25 Sep 2013 15:08:02 +0200 Message-ID: <5242E032.3060706@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" Content-Transfer-Encoding: quoted-printable Return-path: Received: from mail-wi0-f179.google.com (mail-wi0-f179.google.com [209.85.212.179]) by alsa0.perex.cz (Postfix) with ESMTP id 75E0A265388 for ; Wed, 25 Sep 2013 15:08:09 +0200 (CEST) Received: by mail-wi0-f179.google.com with SMTP id hm2so5497324wib.0 for ; Wed, 25 Sep 2013 06:08:09 -0700 (PDT) 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 Dear all, I'm currently working on supporting WM8740 device software configured = with imx6q system. For now my driver seems to be configured correctly. The playback is = launched but i get: ALSA sound/core/pcm_lib.c:1822 playback write error (DMA or IRQ trouble? write error: Input/output error The imx ssi is not sending me any data on I2S bus( nothing can be seen = on the oscillo). I would like to know how do I have to configure my master clock in order = to launch the I2S. My master clock is for now 24MHz. Sorry to be confused a bit but i'm quite newbie with this device. Best regards. St=E9phane