From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Courtier-Dutton Subject: Re: [PATCH 1/2] ca0106 playback 44100Hz support to SPDIF and playback format & rate constraints Date: Wed, 03 Sep 2008 19:36:51 +0100 Message-ID: <48BED943.1080504@superbug.co.uk> References: <1219415921.32652.254.camel@localhost> <1219502224.15980.32.camel@localhost> <1220375467.7459.8.camel@localhost> <48BDAD8B.8060007@superbug.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from anchor-post-33.mail.demon.net (anchor-post-33.mail.demon.net [194.217.242.91]) by alsa0.perex.cz (Postfix) with ESMTP id 0E28F103826 for ; Wed, 3 Sep 2008 20:36:56 +0200 (CEST) In-Reply-To: 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: Trent Piepho Cc: Takashi Iwai , alsa-devel@alsa-project.org, Ben Stanley List-Id: alsa-devel@alsa-project.org Trent Piepho wrote: > On Tue, 2 Sep 2008, James Courtier-Dutton wrote: >> Ben Stanley wrote: >>> + /* We only support 44100 to spdif, not to DAC. >>> + (FIXME WHY?)*/ >> WHY? Because the DAC cannot be clocked at 44100, only 48000 and 96000 >> from the CA0106 chip. >> The SPDIF can be clocked at 44100. >> It is a hardware limitation. > > The DAC supports 44100. Is the problem that the ca0106 can't provide a > 44100 clock to the DAC? It does not really matter why, it does not work at 44100 and that is fact.