Can I use SDMA for transferring memory to PCI space?

[hiromichimatsum]

Dear all,

I'm developing the pci device driver on i.MX6Q.

The pci device doesn't have a DMA Controller.

So, I'd like to use SDMA in i.MX6Q.

What I want is to transfer memory to PCI space.

I don't know which script to use, though I read the i.MX6 reference manual.

Then I tried to use "Memory To Memory" script.

The execution was succeeded, but the data were not transferred at all to PCI space.

Can I use SDMA for transferring memory to PCI space?

What script is suitable for in this case?

Best regards,

Hiromichi

[jamesbone · Accepted solution]

Since the memory space for the PCI it is not part of the memory map of the SDMA it is not possible. To have an script from memory to PCI.

Have a great day,
Jaime

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