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Access QSPI from M4 on iMX8-mini

Question asked by Jeff Hane on Jul 23, 2019
Latest reply on Jul 25, 2019 by igorpadykov


I have some tight scheduling requirements and I want to use the M4 running FreeRTOS to communicate with an FPGA via FlexQSPI.  The data will be received/generated by the A53s and shared with the M4 via RPMsg or the MU.

    I don't see a driver for driver in the generated SDK, but if linux setup interface to be memory mapped can I access it from the M4?  If yes, can I use SDMA to do a memory-to-memory transfer?