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i.MX6UL peripheral DMA of SDMA for EIM.

Question asked by Satoshi Shimoda on Aug 22, 2016
Latest reply on Sep 14, 2016 by Satoshi Shimoda

Hi community,

 

Our customer have some questions about i.MX6UL SDMA and EIM.

Please see the questions as below.

 

[Q1]

Please see chapter 43.4.3.2 in IMX6ULRM (Rev.1).

It says that peripheral DMA unit does not support burst transfer.

And according to https://community.nxp.com/message/546378, peripheral DMA can be used for EIM.

Then, if our customer use this peripheral DMA for transfer to EIM memory region, the EIM bus access will be single access even though EIM is synchronous mode?

 

[Q2]

How can we use peripheral DMA from ARM to EIM or vice versa?

With i.MX6DQ, SDMA script written in Appendix A of MCIMX6DQRM can be used for SDMA transfer.

However, there is no the appendix in MCIMX6ULRM Rev.1.

Should we refer the code in chapter 43.7.2.3.1 of MCIMX6ULRM instead of SDMA script?

Or SDMA script can be used for i.MX6UL also?

 

 

Best Regards,

Satoshi Shimoda

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