i.MX ProcessorsのトピックIMX8MQ-EVK PCIe RC-EP connection validation

IMX8MQ-EVK PCIe RC-EP connection validation

bosran — Mon, 30 Oct 2023 08:46:22 GMT

Hi, I have connected 2 IMX8MQ-EVK board with M.2 connector for RC-EP validationTx and Rx are crossed through the M.2 adapter. Currently running Linux kernel 5.15.71 with yocto build. on IMX board acting as RC, imx8mq-evk-pcie1-m2.dtb is running. On IMX board acting as EP, imx8mq-evk-pcie-ep.dtb is running. After bootup, PCIe phy link is up in RC side with follwing.

root@imx8mqevk: lspci 0001:00:00.0 PCI bridge: Synopsys, Inc, DWC_usb3 / PCIe bridge (rev 01) 0001:01:00.0 Non-VGA unclassified device: Synopsys, Inc, DWC_usb3 /PCIe bridge

In the EP device tried to run pci_epf_test it shows the DW Link_up operation is successful.

However RC cannot dectect the vendor ID passed from EP device.

Could you please help how can i validate the RC-EP connection is proper by some test code.

Please help,

Regards

Ranjit

Re: IMX8MQ-EVK PCIe RC-EP connection validation

Rita_Wang — Tue, 31 Oct 2023 02:46:03 GMT

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX6Q-PCIe-EP-RC-Validation-System/ta-p/1126624/page/2

https://www.nxp.com/webapp/sps/download/preDownload.jsp?render=true

file:///C:/Users/nxa07019/Downloads/AN13164-1.pdf

You can refer to these

Re: IMX8MQ-EVK PCIe RC-EP connection validation

bosran — Tue, 31 Oct 2023 02:57:05 GMT

Hi.. not able to access 2nd and 3rd link

Re: IMX8MQ-EVK PCIe RC-EP connection validation

Rita_Wang — Tue, 31 Oct 2023 03:07:34 GMT

I attach for you, you can refer to it

回复： IMX8MQ-EVK PCIe RC-EP connection validation

qwerqq — Sat, 20 Jan 2024 07:34:23 GMT

Hello, have you solved this problem? Now I have the same problem as you. If you have solved it, can you tell me your solution?

回复： IMX8MQ-EVK PCIe RC-EP connection validation

bosran — Mon, 22 Jan 2024 07:31:58 GMT

Hi, I could solve the issue by calling rescan in the RC side after enabling the PCIe EP drive in the other board.

回复： IMX8MQ-EVK PCIe RC-EP connection validation

qwerqq — Tue, 23 Jan 2024 00:56:15 GMT

Now I am also EP on one end and RC on the other, is this a connection problem? Or is the corresponding driver not turned on? Looking forward to your reply, thank you.