From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sascha Hauer Subject: Re: imx-ssi in master mode? Date: Fri, 27 Aug 2010 13:54:16 +0200 Message-ID: <20100827115416.GD1473@pengutronix.de> References: <4C768708.50903@googlemail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [92.198.50.35]) by alsa0.perex.cz (Postfix) with ESMTP id 9944A245AE for ; Fri, 27 Aug 2010 13:54:16 +0200 (CEST) Content-Disposition: inline In-Reply-To: <4C768708.50903@googlemail.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: Sven Zeisberg Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On Thu, Aug 26, 2010 at 05:23:53PM +0200, Sven Zeisberg wrote: > Hi > > I found that the i.MX25 can not transfer multichannels frames through > SSI when it is set up as slave. > (when the i.MX25 SSI is set up as slave, the SSI is set to "normal" mode > in which only one word per frame is transfered) > > Now I'm wondering if anybody has successfully used a codec with the > i.MX25 SSI set up as Master. When we do this here, we can see that the > i.MX25 is generating the bit clock but no frame sync. Master mode is currently not supported by the i.MX driver. You'd have to implement the clk_get_rate functions for the ssi clocks first before implementing the missing pieces in the driver. 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 |