[alsa-devel] fsl_ssi.c: Roberto's problem: ssi hangs after some number of samples

Roberto Fichera kernel at tekno-soft.it
Wed Nov 4 22:48:40 CET 2015


On 11/04/2015 07:18 PM, Nicolin Chen wrote:
> On Wed, Nov 04, 2015 at 07:09:14PM +0100, Roberto Fichera wrote:
>
>> I can try to increase the FIFO watermark up to 15 elements, but after that
>> I don't have more choices. The problem is that the TDM has to run continuously
>> because the SLIC need it. I can eventually enable and disable the DMA requests
>> depending by the active channels for optimization, but the problem still,why the
>> DMA transfer is not triggered?
>  
> There's nothing you can do from SSI side. If you don't clear the
> Channel Error bit, the channel might be still hanging there until
> you clear the bit or reset the channel. You may read SDMA chapter
> for details.

Ok! Will have a look tomorrow morning.


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