Regarding DMA transfer in imx6Quad AI board

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Regarding DMA transfer in imx6Quad AI board

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502 次查看
srilakshmikanag
Contributor I

Hi,

We are using i.mx6Quad - We want to setup DMA transfer from memory to memory, please let us know which DMA can be used for this purpose. Also please tell us if there is any way to setup the DMA from ARM side user space program.

Please let me know.
Thanks in advance.

Regards,
Srilakshmi

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220 次查看
Yuri
NXP TechSupport
NXP TechSupport

According to Table A-1 (SDMA Scripts Overview) of the i.MX6 (Q) Reference Manual,

script ap_2_ap may be used for memory copy.

In the same time, standard ARM approach is using block copy instructions LDM / STM (or NEON VLD / VST),

which are very effective. I recommend it.

https://community.freescale.com/message/322677#322677

https://community.freescale.com/message/260276#260276

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221 次查看
Yuri
NXP TechSupport
NXP TechSupport

According to Table A-1 (SDMA Scripts Overview) of the i.MX6 (Q) Reference Manual,

script ap_2_ap may be used for memory copy.

In the same time, standard ARM approach is using block copy instructions LDM / STM (or NEON VLD / VST),

which are very effective. I recommend it.

https://community.freescale.com/message/322677#322677

https://community.freescale.com/message/260276#260276

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