From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sascha Hauer Subject: Re: [PATCH 4/4] ASoC: Flag the i.MX SSI driver as using symmetric rates Date: Mon, 11 Jan 2010 18:38:59 +0100 Message-ID: <20100111173859.GW6923@pengutronix.de> References: <1262967598-4096-1-git-send-email-broonie@opensource.wolfsonmicro.com> <1262967598-4096-4-git-send-email-broonie@opensource.wolfsonmicro.com> <20100111112047.GT6923@pengutronix.de> <20100111113631.GE3440@sirena.org.uk> <4B4B48FA.6070402@freescale.com> <20100111162508.GB26771@rakim.wolfsonmicro.main> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from fmmailgate01.web.de (fmmailgate01.web.de [217.72.192.221]) by alsa0.perex.cz (Postfix) with ESMTP id 48F372434D for ; Mon, 11 Jan 2010 18:39:03 +0100 (CET) Content-Disposition: inline In-Reply-To: <20100111162508.GB26771@rakim.wolfsonmicro.main> 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: Mark Brown Cc: alsa-devel@alsa-project.org, Liam Girdwood , Timur Tabi , javier Martin List-Id: alsa-devel@alsa-project.org On Mon, Jan 11, 2010 at 04:25:08PM +0000, Mark Brown wrote: > On Mon, Jan 11, 2010 at 09:51:22AM -0600, Timur Tabi wrote: > > > I think the default should be synchronous unless asynchronous support > > is specified. > > I tend to agree for the i.MX hardware - for the ones I've looked at each > external SSI port is four wire so you need to hook up two to achieve a > six wire configuration that can do asymmetry so a direct hookup between > the external port and the SSI controller seems fairly natural. It's > also the situation for all the default hookups the silicon provides. As long as I can overwrite this flag in the board support I'm fine with it. On our MC13783 based boards we have two external SSI channels (one for record and one for playback). I merge them together to one six wire SSI port using the AUDMUX since the imx-ssi driver currently can handle only one SSI unit in FIQ mode. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |