question about pcie

[ainolike]

I'm testing PCIe with SABRE lite board. there are some questions about PCIe.

a) In chapter memory map of IMX6DQRM, it assigns a range of address as follows.

     Start address     End address     Size          Description

     01FF_C000        01FF_FFFF      16KB        PCIe register

     0100_0000         01FF_BFFF      16368KB  PCIe

I want to know the usage of the 16368KB space. Is PCIe BAR must mapped to this memory space? And is the size of BAR space must less than 16368KB?

b) I have had my board work in RC mode. How can I set PCIe working in EP mode?

[Yuri]

Hello,

as for PCIe EP mode - perhaps the following helps.

Configuring the kernel for RC/EP communication

Regards,

Yuri.

[art]

a) Please refer to the Chapter 40 of the attached document.

b) There is no EP functionality implementation in the current Linux BSP driver.

Have a great day,
Artur

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