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How can i make eim interface with fpga using multiple dma?

Question asked by Hanseung Lee on Mar 6, 2018
Latest reply on Apr 29, 2019 by igorpadykov

Hello everyone!!


I have a question.!


I want to make interface i.mx6 solo and FPGA use EIM(with sdma).


I've already tested with that using eim.


But, it is not working very well.


                              |      |      |      |      |      |   <= inturrupts (200us interval)

dma channel 0      |-----|

dma channel 1             |-----|

dma channel 2                    |-----|


However, this method did not work well because of the schemeler of dma.


How can I make dma without being pushed back to match the interrupt signal?