Jetson AGX Orin Dev Kit PCIe (Orin RP to Orin EP) Shared RAM Memory Not Working

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

I have followed the “PCIe Endpoint Mode” instructions from r35.3.1 Developer Guide. I have rebuilt the kernel to disable CONFIG_STRICT_DEVMEM. I can enable to EP Orin and rd/wr to the BAR0 RAM phys.

Although when I run “# setpci -s 0005:01:00.0 COMMAND=0x02” on RP Orin, I get the following message:
"setpci: Warning: No devices selected for “COMMAND=0x02” .

Furthermore, when I run “# lspci -v” it only shows 0001:00:00.0 PCI bridge: NVIDIA Corporation Device 229e (rev a1) (prog-if 00 [Normal decode]) and does not show any mention of “RAM memory: NVIDIA Corporation Device 0001”

Can this test be done using an x4 PCIe cable in the x16 slot?

Please advise!

3

How did you connect the EP orin to your RP orin?

4

We had a hardware document for the PCIe EP design. Have you read this ?

5

I was attempting to use a PCIe Male-to-Male x4 Cable. So it appears I need a PCIe Male-to-Male x8 Cable to run this Nvidia provided Orin RP-Orin EP example.

How do I configure the Orin RP to run in x4 mode?

6

Can we us the “Endpoint design guide of AGX Xavier” for connecting two AGX Orin SOM.

9

Please compare your design to the Figure 7-5. PCIe Jetson AGX Orin RP to Jetson AGX Orin EP connection
Example in Orin Design Guide doc.

10

Where can I purchase an NVIDIA E3317 RX/TX Swap Board?

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