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SDMA transfer to/from memory shared with PCIe root

Question asked by Fredrik Moller on Oct 16, 2014
Latest reply on Oct 17, 2014 by igorpadykov

I have an imx6 set up as PCIe endpoint where the lower 16MB of DDR memory (address 0x10000000-0x11000000) is shared with the PCIe root on the other side of the PCIe link.

 

I want to use SDMA on the imx6 to copy to/from this memory. Is this possible?

 

The reason I ask is because of this discussion PCIe DMA problems with i.MX6 which seems to imply that that is not the case.

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