iMX6 SDMA Function

[koichisakagami]

Dear Sirs,
I would like to use the scatter/gather function between SDIO and memorys.

Does iMX6 SDMA support  scatter/gather function between SDIO and memorys ?
Or ,do I have to use the internal DMA ( in uSDHC module) ?

If Yes, does the Linux BSP support above function ?

Best Regards,

Koichi Sakagami

[Rhyme · Accepted solution]

Dear Koichi-san,

Are you asking

(1) Does SDMA support scatter/gather function?

(2) Does SDMA support transfer biween memory and SDIO?

If (1) is the case, Assuming the "scatter/gather" means

similar function in eDMA, SDMA seems to have superior function(s).

Please refer to the chapter of SDMA in RM.

If (2) is the case, most probably the answer is yes,

but I think that you need to describe what you'd like to

accomplish more specifically to get appropriate answer(s).

Best Regards,

4-Feb-2014

Motoo Tanaka

[koichisakagami]

Dear Tanaka-san,

Thank you for reply.

It is (2) that I would like to ask.

I understood. I post the questions more specifically.

Best Regards,

Koichi sakagami