CONFIG_USB4_DEBUGFS_MARGINING: Expose receiver lane margining operations under USB4 ports and retimers (DANGEROUS)

General informations

The Linux kernel configuration item CONFIG_USB4_DEBUGFS_MARGINING has multiple definitions:

Expose receiver lane margining operations under USB4 ports and retimers (DANGEROUS) found in drivers/thunderbolt/Kconfig

The configuration item CONFIG_USB4_DEBUGFS_MARGINING:

• prompt: Expose receiver lane margining operations under USB4 ports and retimers (DANGEROUS)
• type: bool
• depends on: ( CONFIG_DEBUG_FS ) && ( CONFIG_USB4_DEBUGFS_WRITE )
• defined in drivers/thunderbolt/Kconfig
• found in Linux kernels: 6.11, 6.12-rc+HEAD

Help text

Enables hardware and software based receiver lane margining support under each USB4 port and retimer, including retimers on the other side of the cable. Used for electrical quality and robustness validation during manufacturing. Should not be enabled by distro kernels.

Expose receiver lane margining operations under USB4 ports (DANGEROUS) found in drivers/thunderbolt/Kconfig

The configuration item CONFIG_USB4_DEBUGFS_MARGINING:

• prompt: Expose receiver lane margining operations under USB4 ports (DANGEROUS)
• type: bool
• depends on: ( CONFIG_DEBUG_FS ) && ( CONFIG_USB4_DEBUGFS_WRITE )
• defined in drivers/thunderbolt/Kconfig
• found in Linux kernels: 6.1–6.10

Help text

Enables hardware and software based receiver lane margining support under each USB4 port. Used for electrical quality and robustness validation during manufacturing. Should not be enabled by distro kernels.

Hardware

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The data is retrived from:

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• Linux Kernel Driver DataBase (LKDDb)

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