From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [PATCH 1/6] ASoC: OMAP mcbsp: Add DSP_A support Date: Wed, 8 Apr 2009 10:28:12 +0100 Message-ID: <20090408092811.GA20122@sirena.org.uk> 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> <20090408090816.7e780975.jarkko.nikula@nokia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from cassiel.sirena.org.uk (cassiel.sirena.org.uk [80.68.93.111]) by alsa0.perex.cz (Postfix) with ESMTP id DCAE91037E3 for ; Wed, 8 Apr 2009 11:28:13 +0200 (CEST) Content-Disposition: inline In-Reply-To: <20090408090816.7e780975.jarkko.nikula@nokia.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: Jarkko Nikula Cc: "sakoman@gmail.com" , "alsa-devel@alsa-project.org" , "Ujfalusi Peter (Nokia-D/Tampere)" List-Id: alsa-devel@alsa-project.org On Wed, Apr 08, 2009 at 09:08:16AM +0300, Jarkko Nikula wrote: > 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. Well, often there's not much polarity but generally the device will offer something that can be expressed as a combination of mode A or B and BCLK inversion. The Wolfson devices are the way they are mostly to give them the flexibility to interoperate with whatever the other device is able to do - there's no reason to select any particular clocking mode other than for interoperability.