Jetson Orin, JP5.1.2 and PCIE EP(c5) Error

Hi, all:

We are debugging a custom carrier with two ORins, They are connected to PCiE C5. We are running Jetpack 5.1.2. We enable-srns and disable Spread Spectrum Clocking(SSC) on Orin refer to the following link：
How to disable Spread Spectrum Clocking(SSC) on Orin

The two computers are turned on at the same time. Then the endpoint orin executes the requisite start_endpoint.sh command which is:

cd /sys/kernel/config/pci_ep/

mkdir functions/pci_epf_tvnet/func1

echo 16 > functions/pci_epf_tvnet/func1/msi_interrupts

ln -s functions/pci_epf_tvnet/func1 controllers/141a0000.pcie_ep/

echo 1 > controllers/141a0000.pcie_ep/start

Then we reboot the rootport orin， we get errors on the endpoint that look like:

root@trunk-desktop:/home/trunk# [   76.629721] pci_epf_tvnet pci_epf_tvnet.0: tvnet_ep_open: PCIe link is not up

[   76.645435] pci_epf_tvnet pci_epf_tvnet.0: tvnet_ep_open: PCIe link is not up

[   76.656325] pci_epf_tvnet pci_epf_tvnet.0: tvnet_ep_open: PCIe link is not up

[   76.667567] pci_epf_tvnet pci_epf_tvnet.0: tvnet_ep_open: PCIe link is not up

[   76.680197] pci_epf_tvnet pci_epf_tvnet.0: tvnet_ep_open: PCIe link is not up

[   94.604342] CPU:0, Error: cbb-fabric@0x13a00000, irq=34

[   94.609727] **************************************

[   94.614653] CPU:0, Error:cbb-fabric, Errmon:2

[   94.619133] 	  Error Code		: TIMEOUT_ERR

[   94.623172] 

[   94.624701] 	  Error Code		: TIMEOUT_ERR

[   94.628733] 	  MASTER_ID		: CCPLEX

[   94.632230] 	  Address		: 0x3e90078

[   94.635820] 	  Cache			: 0x1 -- Bufferable 

[   94.640114] 	  Protection		: 0x2 -- Unprivileged, Non-Secure, Data Access

[   94.647095] 	  Access_Type		: Read

[   94.650591] 	  Access_ID		: 0x13

[   94.650592] 	  Fabric		: cbb-fabric

[   94.657501] 	  Slave_Id		: 0x2e

[   94.660719] 	  Burst_length		: 0x0

[   94.664216] 	  Burst_type		: 0x1

[   94.667537] 	  Beat_size		: 0x2

[   94.670754] 	  VQC			: 0x0

[   94.673533] 	  GRPSEC		: 0x7e

[   94.676588] 	  FALCONSEC		: 0x0

[   94.679807] 	**************************************

[   94.684848] WARNING: CPU: 0 PID: 227 at drivers/soc/tegra/cbb/tegra234-cbb.c:577 tegra234_cbb_isr+0x130/0x170

[   94.695263] ---[ end trace d5c8b5c14fb41327 ]---

[   94.700052] CPU:0, Error: cbb-fabric@0x13a00000, irq=34

These logs are captured from the serial UART console. We log into the machine through the same serial so that the executed commands are visible in the log files.
orin_rp_console.txt (194.0 KB)
orin_ep_console.txt (562.6 KB)

so any suggestion about this issue, thx