Reference guide for differences between Seeed and NVIDIA L4T Board Support Packages across versions 35.3.1, 35.5, 36.3, 36.4, and 36.4.3. Covers added drivers for CAN bus, Wi-Fi, Ethernet, GMSL, TPM, audio codecs, and USB on Seeed Jetson devices.
Seeed's Jetson BSPs are based on NVIDIA's L4T with modifications to support Seeed hardware. This skill identifies the specific driver and feature differences per L4T version so users can understand what Seeed adds on top of the NVIDIA baseline.
Run one phase at a time. After each phase:
[STOP] → stop, consult the failure decision tree.[OK] → tell the user "Phase N complete" and proceed.| Requirement | Detail |
|---|---|
| Hardware | Seeed Jetson device (reComputer series) |
| JetPack | Identify installed version before proceeding |
cat /etc/nv_tegra_release
Or:
dpkg -l | grep -i nvidia-l4t-core
[OK] when L4T version string is displayed (e.g. R36.4.3, R35.5).
[STOP] if file not found — device may not be running L4T.
dpkg -l | grep -i jetpack
Map the L4T version to JetPack:
| L4T Version | JetPack |
|---|---|
| 36.4.3 | 6.2 |
| 36.4 | 6.1 |
| 36.3 | 6.0 |
| 35.5 | 5.1.3 |
| 35.3.1 | 5.1.1 |
[OK] when JetPack version is confirmed.
Based on the L4T version identified in Phase 1, here are the key additions Seeed makes over NVIDIA's default BSP:
/sys/kernel/security mount for SELinux/AppArmor[OK] — informational phase, no commands to run.
Check for CAN bus support:
lsmod | grep mcp251
Check for Realtek Wi-Fi:
lsmod | grep rtw
Check for GMSL deserializer (L4T 36.x):
lsmod | grep max96
[OK] when relevant modules appear for your hardware configuration.
| Symptom | Action |
|---|---|
/etc/nv_tegra_release not found | Device may not be running L4T. Check if this is a Jetson device with uname -a. |
| L4T version not in the table | Seeed BSP may not be installed. Reflash with Seeed's BSP from their download page. |
| Expected driver module not loaded | Check if module exists: find /lib/modules -name "*.ko" | grep <driver>. Load with sudo modprobe <driver>. |
| CAN interface not working | Verify MCP251X hardware is connected. Check dmesg | grep can for errors. |
| Wi-Fi adapter not detected | Confirm USB/PCIe Wi-Fi adapter is plugged in. Check lsusb or lspci. |
references/source.body.md — Full listing of all Seeed BSP differences per L4T version with additional context (reference only)