ko-module-build

Build a .ko Driver Module for Seeed Jetson

When a required .ko driver module is missing from reComputer/reServer, compile it directly on the Jetson device. This guide uses the pl2303 USB-to-serial driver on JetPack 6.2 (L4T 36.4.3) as an example.

Hardware: Seeed Jetson device (reComputer/reServer) Software: JetPack 6.x (L4T 36.x), internet connection

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Execution model

Run one phase at a time. After each phase:

• If output contains [STOP] → stop immediately, consult the failure decision tree
• If output ends with [OK] → tell the user "Phase N complete" and proceed

Replace <driver_name> with the actual driver (e.g. pl2303) throughout.

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Phase 1 — identify L4T version and target driver (~30 s)

cat /etc/nv_tegra_release

Determine the L4T version (e.g. 36.4.3 = JetPack 6.2). Find the JetPack ↔ L4T mapping at: https://developer.nvidia.com/embedded/jetpack-archive

Ask the user which driver module they need (e.g. pl2303, ch341, etc.).

[OK] when L4T version and target driver are confirmed.

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Phase 2 — download and extract BSP source (~10 min)

Download public_sources.tbz2 for the matching L4T version from NVIDIA's L4T release page.

Extract all nested archives:

tar -xjf public_sources.tbz2
cd Linux_for_Tegra/source

find . -type f \( -name "*.tbz2" -o -name "*.tar.bz2" -o -name "*.tar.gz" -o -name "*.tgz" -o -name "*.tar.xz" \) -exec bash -c '
    dir=$(dirname "$1")
    filename=$(basename "$1")
    cd "$dir"
    if [[ "$filename" == *.tbz2 || "$filename" == *.tar.bz2 ]]; then
        tar -xjf "$filename"
    elif [[ "$filename" == *.tar.gz || "$filename" == *.tgz ]]; then
        tar -xzf "$filename"
    elif [[ "$filename" == *.tar.xz ]]; then
        tar -xJf "$filename"
    fi
    cd - > /dev/null
' _ {} \;

[OK] when extraction completes without errors.

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Phase 3 — locate driver source file (~1 min)

sudo find . -type f -name "*<driver_name>*"
# Example: sudo find . -type f -name "*pl2303*"