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Linux/AM5728: How to use EDMA from Linux

Brad Caldwell
Genius 12595 points
Part Number: AM5728

Tool/software: Linux

Hi,

I'm using the latest TI PSDK Linux for the AM5728. I'd like to use EDMA from Linux to do some fast data copies. Do we have an EDMA driver for Linux? If so, is there documentation and examples?

Thanks

  • 0
    TI__Guru**** 161600 points
    Yes, there is an EDMA driver.
    See Documentation/devicetree/bindings/ti-edma.txt and Documentation/devicetree/bindings/ti-dma-crossbar.txt for explanation how to set the EDMA in the device tree file.

    See Documentation/dmaengine/dmatest.txt to see how you can test EDMA from user space.

    Best Regards,
    Yordan
  • 0 in reply to Yordan Kovachev
    TI__Genius 12595 points

    Yordan, thanks for the pointers. I'll take a look and try out the procedure explained in dmatest.txt. BTW, slight correction to your original reply,

    Instead of :

    Documentation/devicetree/bindings/ti-edma.txt

    It's actually located at:

    Documentation/devicetree/bindings/dma/ti-edma.txt

    At least that's where it's located in LPSDK 03.03.00.04