None, was looking for one. I use FIFO without DMA. The DMA exchange was added later then my original SDK files. What I have overlook, the code is "complexe" and requires clean-up on error, less autonomous. My ideal configuration would be /CS - Transact Exchange - CS High - self prepare "reset" for next exchange in the slave part. I didn't double check but I think iMX8 doesn't have the SPI RDY signal. We use the iMX6 master - S32K144 slave! FIFO is limited to 4x 32 bits with high speed exchange, DMA would allow larger data exchange with no risk of underrun/overrun/error.
