I'm trying to find any documentation about how long does it take edma to react. We are seeing around 200 ns of jitter on a SPI line that is triggered by edma. We suspect an impedance issue but it will be nice to know how fast is EDMA able to copy data from location to another.
I'm working on sysbios, the omapl137, the dsp side and the only interrupts are for the edma cc and edma errors. Edma is fired every SPI 1024 samples which should be around 1.7 ms.
Jaime