On Wed, Oct 28, 2015 at 6:59 AM, Caleb Crome <caleb@xxxxxxxxx> wrote: > On Wed, Oct 28, 2015 at 1:11 AM, Roberto Fichera <kernel@xxxxxxxxxxxxx> wrote: >> On 10/27/2015 07:57 PM, Fabio Estevam wrote: >>> [Adding Roberto in the thread as he is also trying to get SSI TDM support/ >> >> Thanks Fabio, >> >> I'm also having the same issue but employing SSI in TDM master mode against a SLIC Si32178 >> using its PCM mode. PCLK is at 2048KHz, FSYNC is 8KHz slot length is 32 bits (SSI wants >> this since when in master mode) but valid data set to be 8bits in the SSI register. >> >> My Current situation is that I've a custom fsl_ssi.c driver to control the SSI in TDM master mode >> both PCLK and FSYNC works perfectly fine, the SLIC has a register that I can check via SPI for >> such purpose, I can see the clocking status from its side. The main problem I've is exactly the same >> Caleb is having, after a certain amount of SDMA transfers, roughly 1000 or so, everything stops >> without any apparent reason. > > My problem is that the channels randomly slip a slot and all words end > up in the wrong slot. I suspect this is a DMA issue, but I really > haven't diagnosed it yet. I don't get a full stop on the data. > > FYI, I'm using a very recent 4.3 kernel from linus's repo, but 4.2 > behaved the same. > Now I'm recalling when I tried the patches on 4.1, everything definitely froze. What kernel are you using?. I'm basically using the 4.3-rc7 -Caleb _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
