Hi,
The basic PCIe connectivity between Orin EP and PC RP is not a problem based on lspci and devmem2, even though details indicate only 2.5GT/s and x1. But performance of virtual Ethernet over PCIe is an issue and is not clear if there is an underlying DMA issue since configuring separate DMA test is a problem.
– The virtual Ethernet test was enabled by Bringing up an Ethernet Interface over PCIe on EP and by compiling tvnet on RP. Assuming tvnet driver is required and is up to date, is 5Gb/s measured, max speed that can be expected?
– The DMA test was attempted by Connecting and Configuring the Devices and What is the actual maximum speed of Jetson AGX Xavier PCIE Ethernet? - #8 by Jasonm on EP. Assuming CONFIG_PCIE_TEGRA_DW_DMA_TEST=y is required and recompiling kernel and reboot Orin, reboot PC, /sys/kernel/debug/tegra_pcie_ep/ still does not show up on EP. Also not clear how to compile pci-epf-nv-test.c on PC that should enable /sys/kernel/debug/pcie-x/ to show up on RP side?
Thanks.