Pcie ethernet problem

[zhang.xiang]

When using PCIE3 to convert to Ethernet, no nodes appear. How should I configure the device tree?

[WayneWWW]

Looks like you connect it to C9 which by default is not enabled. Please refer to document to flash the correct ODMDATA first.

https://docs.nvidia.com/jetson/archives/r35.6.0/DeveloperGuide/HR/JetsonModuleAdaptationAndBringUp/JetsonOrinNxNanoSeries.html

Also, below DT change to enable C9.

/* C7 */
 pcie@141e0000 {
  phys = <&p2u_gbe_0>;
  phy-names = "p2u-0";
  num-lanes = <1>;
 };

 /* C9 */
 pcie@140c0000 {
  status = "okay";
  vddio-pex-ctl-supply = <&vdd_1v8_ao>;
  phys = <&p2u_gbe_1>;
  phy-names = "p2u-0";
  num-lanes = <1>;
 };

[zhang.xiang]

lspci.txt (41.7 KB)
dmesg.txt (73.1 KB)

Still no nodes

[WayneWWW]

Make sure the clkreq and rst pinmux are similar to this example.

https://docs.nvidia.com/jetson/archives/r36.4.3/DeveloperGuide/HR/JetsonModuleAdaptationAndBringUp/JetsonAgxOrinSeries.html

This picture is for C0 and C7

[zhang.xiang]

Add the clkreq and rst pinmux and there is no node, see the attached log-add.txt

No clkreq and rst pinmux logs are added. See attached log-pci.txt

log-pci.txt (83.5 KB)
log-add.txt (78.7 KB)

[WayneWWW]

Which jetpack release are you using?

[zhang.xiang]

Tegra_Linux_Sample-Root-Filesystem_R35.3.1_aarch64.tbz2

[WayneWWW]

I saw C9 is enabled but with no link detected. Please try other device too and also test this debug tips.
https://docs.nvidia.com/jetson/archives/r35.4.1/DeveloperGuide/text/HR/JetsonModuleAdaptationAndBringUp/JetsonAgxOrinSeries.html?highlight=pcie#debug-pcie-link-up-failure

[zhang.xiang]

Does this need to be changed?

[WayneWWW]

Yes, you need to change ODMDATA setting otherwise C9 won’t have functionality.