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5ebc3b6ad9
The original code was written by Dell for the dell-dock plugin, but it's exactly the same code and NVM format for Intel reference hardware.
38 lines
1.0 KiB
Markdown
38 lines
1.0 KiB
Markdown
# Intel USB4
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## Introduction
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This plugin supports the Goshen Ridge hardware which is a USB-4 controller from Intel.
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These devices can updated using multiple interfaces, but this plugin only uses the XHCI interface.
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## Firmware Format
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The daemon will decompress the cabinet archive and extract a firmware blob in
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an unspecified binary file format, with vendor specific header.
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This plugin supports the following protocol ID:
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* com.intel.thunderbolt
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## GUID Generation
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These devices use a custom generation scheme, which is quite intentionally identical to thunderbolt
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plugin:
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* `TBT-{nvm_vendor_id}{nvm_product_id}`
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## Update Behavior
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By default the USB4 controller will reboot at the end of the update.
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Some devices (e.g. inside some Dell docks) will instead be updated the next time the USB-C plug
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from the dock is unplugged from the host, or when activated manually.
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## Vendor ID Security
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The vendor ID is set from the USB vendor, in this instance set to `USB:0x8087`
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## External Interface Access
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This plugin requires read/write access to `/dev/bus/usb`.
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