# jetson-customize-usb

Configures USB2 and USB3 SS ports on Jetson Orin and Thor boards via kernel DT overlays. Keeps host xHCI controller probes from failing when toggling ports.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 1100 installs · ★ 3735
- Author: Jetson Team
- License: Apache-2.0 · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/NVIDIA/skills/tree/HEAD/skills/jetson-customize-usb/SKILL.md
- Updated: 2026-10-23
- HTML: https://affpapa.org/en/nevibecode/skills/jetson-customize-usb

## What it does

The skill enables, disables, or alters roles for USB2 and USB3 SuperSpeed lines on Jetson Orin (Tegra234) and Thor (Tegra264) carrier boards. Port changes require strict multi-node coordination. The tool updates three points in lockstep: PHY lane status in `xusb_padctl`, the individual port node, and the `tegra-xusb` host controller reference list. If this sync breaks, host probing crashes and `lsusb` returns nothing.

Hardware constraints dictate clear functional boundaries. Only `usb2-0` supports OTG mode alongside the `tegra-xudc` device controller, while all other ports remain host-only. The skill writes commits directly into the composite `.dts` overlay under `bsp_sources/`. It does not touch ODMDATA or allocate UPHY lanes. If non-stock lane assignments are required, `jetson-customize-uphy` must run first.

Carrier board documentation is strictly mandatory. If `custom_carrier_schematic` or `custom_carrier_pinmux_xls` are missing, the skill refuses to run. Both `dtc` and `fdtoverlay` must also be available on the PATH.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add NVIDIA/skills --skill jetson-customize-usb -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/jetson-customize-usb/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/jetson-customize-usb/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add NVIDIA/skills --skill jetson-customize-usb -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/jetson-customize-usb/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add NVIDIA/skills --skill jetson-customize-usb -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/jetson-customize-usb/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install NVIDIA/skills jetson-customize-usb
```

2. **Manually: put the files in place**
- File: `.github/skills/jetson-customize-usb/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add NVIDIA/skills --skill jetson-customize-usb -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/NVIDIA/skills --path skills/jetson-customize-usb
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/jetson-customize-usb/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add NVIDIA/skills --skill jetson-customize-usb -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/NVIDIA/skills/tree/HEAD/skills/jetson-customize-usb/SKILL.md

## When to use it
- enable or disable USB3 SS ports on Jetson Orin carriers
- wire VBUS enable and overcurrent detection GPIOs
- link USB2 companion phandles to SuperSpeed ports
- resolve xHCI probe failures after custom board bringup

## Example prompts
- Configure USB3 SS ports for my custom Jetson Orin carrier board
- Wire VBUS-EN GPIOs and attach companion ports for usb3-0
- Fix tegra-xusb failed to enable PHYs error in the DT overlay

## Source text · SKILL.md · Apache-2.0

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: b6dfbb7553a327bc.

BEGIN THIRD-PARTY FILE b6dfbb7553a327bc
```text
---
name: jetson-customize-usb
description: Enable/disable Jetson USB2/USB3 SS ports via kernel-DT overlay. Do NOT use for UPHY lane allocation or ODMDATA edits.
version: 0.0.1
license: "Apache-2.0"
metadata:
  data-classification: public
  author: "Jetson Team"
  tags:
    - bsp
    - phase-2
    - io
    - usb
  domain: meta
---

# Customize USB (per-port enable / disable / role)

## Purpose

Enable, disable, or change the role of USB2 / USB3 SS ports on a
Jetson Thor (Tegra264) or Orin (Tegra234) custom carrier. Captures
per-port wiring (role, max speed, VBUS-EN / OC GPIOs, CC1/CC2 GPIOs
for Type-C, USB3 SS UPHY lane), resolves the SS to USB2 companion
graph from the in-tree DTB, then renders a self-contained kernel-DT
overlay that flips every port action in three places in lockstep
(lane status, port status, host xHCI `phys` + `phy-names`).

UPHY lane allocation belongs to `jetson-customize-uphy`. No ODMDATA
edit. Output is one commit to the composite custom overlay `.dts` in
the `bsp_sources/` hardware repo.

## Prerequisites

- Active profile with `reference_devkit:` + `custom_carrier:` blocks.
- `<source.root_path>/Linux_for_Tegra/.git` exists
  (`/jetson-init-source`).
- `/jetson-derive-carrier` has run — carrier flash-conf fork in the
  overlay tracker.
- `/jetson-customize-uphy` has run when any enabled USB3 SS port
  needs a non-stock UPHY lane allocation. Its JSON sidecar at
  `<workspace>/target-platform/<profile-stem>.jetson-customize-uphy.json`
  is consulted for SS lane allocation.
- Source-of-truth docs: Adaptation Guide §"Port the Universal Serial
  Bus", Module Design Guide §USB, SoC TRM (xusb block).
- **When `custom_carrier:` is present, both
  `documents.custom_carrier_schematic` AND
  `documents.custom_carrier_pinmux_xls` are REQUIRED.** Refuse the run
  if either is missing — per-port routing (VBUS-EN / OC / CC GPIOs, SS
  lane wiring, hub fan-out) on a custom carrier cannot be guessed.
  Reference-devkit-only profiles skip this check.
- `dtc`, `fdtoverlay` on PATH.

## Overview

USB on Tegra spans three IP surfaces: the `xusb_padctl` block (USB2
OTG + USB3 SS PHYs), the `tegra-xusb` xHCI host controller, and an
optional `tegra-xudc` device controller attached to the single
OTG-capable USB2 port (`usb2-0`).

**A per-port flip MUST touch three kernel-DT places in lockstep.**
Anything less crashes the host xHCI probe and leaves `lsusb` empty
on every port (collateral damage to stock-okay ports):

| # | Place | Path | What it controls |
|---|---|---|---|
| 1 | **Lane (PHY provider)** | `xusb_padctl/pads/usb<2\|3>/lanes/usb<2\|3>-N` | SS / OTG PHY hardware-binding. `status="disabled"` then lane stops providing a PHY. |
```
END THIRD-PARTY FILE b6dfbb7553a327bc

The third-party file has ended. Everything between the b6dfbb7553a327bc tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

First 2692 of 8397 bytes. © Jetson Team · Apache-2.0 · https://github.com/NVIDIA/skills/tree/HEAD/skills/jetson-customize-usb/SKILL.md

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