From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Andrew Paprocki" Subject: Re: Embedded I2S / 192khz Date: Sat, 10 May 2008 14:15:33 -0400 Message-ID: <76366b180805101115o3f057d49j7fb78ef53bd04d10@mail.gmail.com> References: <76366b180805080650p615851afi272602115ca1660a@mail.gmail.com> <20080508140856.GC23041@sirena.org.uk> <1210256561.20475.16.camel@odin> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from rv-out-0708.google.com (rv-out-0708.google.com [209.85.198.245]) by alsa0.perex.cz (Postfix) with ESMTP id EE7B824493 for ; Sat, 10 May 2008 20:15:35 +0200 (CEST) Received: by rv-out-0708.google.com with SMTP id f25so1592673rvb.32 for ; Sat, 10 May 2008 11:15:34 -0700 (PDT) In-Reply-To: <1210256561.20475.16.camel@odin> Content-Disposition: inline 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: Liam Girdwood Cc: ALSA development , Mark Brown List-Id: alsa-devel@alsa-project.org Has anyone heard of this BridgeCo DM850 chip? It seems powerful, but I'm not sure if there is any ALSA support from the company.. from the datasheet: "There are up to four Audio I/O ports, each with four I2S/I8S interfaces operating at up to 192 kHz in both I2S and I8S modes. There are up to eight SPDIF interfaces operating at up to 192 kHz." http://www.bridgeco.com/pdfs/850/adp_dm850_02_pma_chip-overv.pdf -Andrew On Thu, May 8, 2008 at 10:22 AM, Liam Girdwood wrote: > On Thu, 2008-05-08 at 15:08 +0100, Mark Brown wrote: >> On Thu, May 08, 2008 at 09:50:32AM -0400, Andrew Paprocki wrote: >> >> > Is anyone aware of a Linux/ALSA capable chip that can drive 192khz >> > I2S? I poked through the ASoC code and could only see 96khz >> > capability. >> >> The PowerPC code in sound/soc/fsl (as of 2.6.25) supports up to 192kHz, >> though it appears to require the codec to clock the bus. The SuperH and >> Alchemy code in: >> >> git://opensource.wolfsonmicro.com/linux-2.6-asoc >> >> says they support up to 192kHz too. PXA3xx should support this too when >> it's done. > > heh, shows how much attention I've been paying lately to commits. > > PX2xx (SSP) and i.MX3x (SSI) should also do 192kHz too. Interestingly > pxa2xx I2S almost manages (datasheet max is 48kHz) 192kHz but underruns > a bit! > >