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i.MX6 availabe PCIE memory access

Question asked by torus1000 on Oct 9, 2015
Latest reply on Oct 19, 2015 by igorpadykov

Hi all,

Regard to PCIe of L3.14.28 Yocto i.MX6Q SabreSD BSP, I'm confusing now.

 

*  I believe i.MX6 support PCIe RC mode only so far.

*  According to the release note, there is PCIe EP/RC validation system.

*  I found a patch here:

      https://community.freescale.com/docs/DOC-95014

      https://community.freescale.com/message/544463

*  This system realized following features, I think.

      EP can access the memory of RC.

      RC can access the memory of EP.

 

Let me confirm some use cases as following, after patch applied;

 

(Q1)  Can FPGA(EP mode) access the  16MB memory of iMX6(RC mode)?

(Q2)  Can iMX6(RC mode) access the 256MB memory of FPGA(EP mode)?

(Q3)  Can iMX6(EP mode) access the 256MB memory of FPGA(RC mode)?

(Q4)  Can FPGA(RC mode) access the  16MB memory of iMX6(EP mode)?

 

I hope at least fist 2 answers are YES and BSP already supported them.

 

Can anyone help me?

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