Xavier-nx: pcie error and machine reboot

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier
3

Hi,

Could you explain your HW setup?

  1. Is it devkit or NX module+ custom CVB?
  2. If it is devkit, how are you connecting Intel igb to M.2 Key E?

I see “surprise down” error, so I suspect HW setup here. One thing you can try is limiting the PCIe speed to Gen1, apply following patch and flash DTB.

diff --git a/common/tegra194-p3668-common.dtsi b/common/tegra194-p3668-common.dtsi
index 1f923ed268ac…69dedbe5df23 100644
— a/common/tegra194-p3668-common.dtsi
+++ b/common/tegra194-p3668-common.dtsi
@@ -330,7 +330,7 @@
vddio-pex-ctl-supply = <&p3668_spmic_sd3>;
nvidia,disable-aspm-states = <0xf>;
nvidia,enable-power-down;

  •           nvidia,max-speed = <3>;

  •           nvidia,max-speed = <1>;

          num-lanes = <1>;
          phys = <&p2u_11>;

Thanks,
Manikanta