From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: wm8974 and sam9g45 atmel Date: Fri, 24 Jun 2011 13:09:44 +0100 Message-ID: <20110624120943.GG9483@opensource.wolfsonmicro.com> References: <4DF0E2B4.7040401@ecsproject.com> <20110610103118.GA26441@sirena.org.uk> <4DFB1CEA.2060308@ecsproject.com> <4DFB6CA5.9010202@ecsproject.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from opensource2.wolfsonmicro.com (opensource.wolfsonmicro.com [80.75.67.52]) by alsa0.perex.cz (Postfix) with ESMTP id 81F3624489 for ; Fri, 24 Jun 2011 14:09:46 +0200 (CEST) Content-Disposition: inline In-Reply-To: <4DFB6CA5.9010202@ecsproject.com> 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: Michele Da Rold Cc: dp@opensource.wolfsonmicro.com, alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On Fri, Jun 17, 2011 at 05:03:01PM +0200, Michele Da Rold wrote: > it's better to use wm8974 like master? because I have see that the > atmel ssc is not so good generating clocks.... Probably in your system, yes. The most important thing from an audio performance point of view is that the clocks are all derived from the same clock source - if this is like other Atmel systems then you need to make the CODEC clock master on the audio bus as the MCLK output from the CPU is not synchronous with the audio clocks.