From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarkko Nikula Subject: Re: [PATCH 1/6] ASoC: OMAP mcbsp: Add DSP_A support Date: Wed, 8 Apr 2009 09:08:16 +0300 Message-ID: <20090408090816.7e780975.jarkko.nikula@nokia.com> References: <1239020372-8457-1-git-send-email-peter.ujfalusi@nokia.com> <20090406122232.GA8585@rakim.wolfsonmicro.main> <200904061537.59067.peter.ujfalusi@nokia.com> <200904070819.12019.peter.ujfalusi@nokia.com> <20090407221404.GA8465@sirena.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mgw-mx06.nokia.com (smtp.nokia.com [192.100.122.233]) by alsa0.perex.cz (Postfix) with ESMTP id 287DC245D1 for ; Wed, 8 Apr 2009 08:08:03 +0200 (CEST) In-Reply-To: <20090407221404.GA8465@sirena.org.uk> 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: ext Mark Brown Cc: "sakoman@gmail.com" , "alsa-devel@alsa-project.org" , "Ujfalusi Peter (Nokia-D/Tampere)" List-Id: alsa-devel@alsa-project.org On Wed, 8 Apr 2009 00:14:05 +0200 ext Mark Brown wrote: > The TWL4030 datasheet does not appear to be a model of clarity in this > area but it looks awfully like mode A with an inverted bit clock (the > data appears to be being driven rather than sampled on the rising edge > but the first bit does start on the falling edge of the frame clock). > This means the Beagle code looks about right unless I'm misreading > something. What I've seen few codec specs there is no uniform way for different DSP formats between their specifications except Wolfson codecs. So I use to keep those as a reference and match codec accordingly. Like in AIC3x where bit-clock polarity is fixed. Jarkko