From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolin Chen <nicoleotsuka@gmail.com>
Subject: Re: fsl_ssi.c: Getting channel slips with fsl_ssi.c in
 TDM (network) mode.
Date: Fri, 30 Oct 2015 18:32:06 -0700
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To: Caleb Crome <caleb@crome.org>
Cc: Fabio Estevam <fabio.estevam@freescale.com>, "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>, Markus Pargmann <mpa@pengutronix.de>, "arnaud.mouiche@invoxia.com" <arnaud.mouiche@invoxia.com>, Roberto Fichera <kernel@tekno-soft.it>, "shawn.guo@linaro.org" <shawn.guo@linaro.org>
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On Fri, Oct 30, 2015 at 03:35:17PM -0700, Caleb Crome wrote:

> > **********************
> > ** Problem 2 *******
> > **********************

> I realized the problem with the dual fifo mode:  it's that you had set
> the maxburst to 16 in your patch.  I guess this must be the maxburst
> to a single fifo maybe?  When I set the fual fifo maxburst back to 8,
> I get perfection again!

I actually set 16 for dual FIFO and tested with 2-channel playback.
Since you have dual FIFO right now, burst 8 doesn't hurt a lot as
SPBA should be a pretty dedicated bus from SDMA point of view. As
long as you don't have too many SPBA modules working with SDMA. It
should work for you.