From mboxrd@z Thu Jan 1 00:00:00 1970 From: Timur Tabi Subject: Re: [PATCH v5 8/8] ASoC: fsl: add imx-sgtl5000 machine driver Date: Fri, 16 Mar 2012 16:31:20 -0500 Message-ID: <4F63B128.7040705@freescale.com> References: <1331888204-27058-1-git-send-email-shawn.guo@linaro.org> <1331888204-27058-9-git-send-email-shawn.guo@linaro.org> <20120316111814.GA7860@S2101-09.ap.freescale.net> <20120316192110.GH3158@opensource.wolfsonmicro.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from va3outboundpool.messaging.microsoft.com (va3ehsobe010.messaging.microsoft.com [216.32.180.30]) by alsa0.perex.cz (Postfix) with ESMTP id B8991243EF for ; Fri, 16 Mar 2012 22:31:28 +0100 (CET) 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: alsa-devel@alsa-project.org, Mark Brown , Sascha Hauer , linux-arm-kernel@lists.infradead.org, Shawn Guo List-Id: alsa-devel@alsa-project.org Trent Piepho wrote: > The ESAI and SSI hardware are totally different. SSI gives you a > playback and a record stream in an I2S, or I2S like, interface. A > stream is mono or stereo. ESAI has IIRC up to six output and four > inputs streams. Each stream is in parallel on the same clock, and can > have one or more channels. Are these channels on the same wire in a time-division multiplexing, or on six different wires? If it's a TDM, then the SSI can actually do this using "network mode", but I don't enable that in the driver, since it's not really I2S compliant. Well, this point is not really relevant to the discussion. -- Timur Tabi Linux kernel developer at Freescale