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CONFIG_USB_OTG_WHITELIST: Rely on OTG Targeted Peripherals List

General informations

The Linux kernel configuration item CONFIG_USB_OTG_WHITELIST has multiple definitions:

Rely on OTG Targeted Peripherals List found in drivers/usb/core/Kconfig

The configuration item CONFIG_USB_OTG_WHITELIST:

Help text

If you say Y here, the "otg_whitelist.h" file will be used as a product whitelist, so USB peripherals not listed there will be rejected during enumeration. This behavior is required by the USB OTG specification for all devices not on your product's "Targeted Peripherals List". "Embedded Hosts" are likewise allowed to support only a limited number of peripherals.

Otherwise, peripherals not listed there will only generate a warning and enumeration will continue. That's more like what normal Linux-USB hosts do (other than the warning), and is convenient for many stages of product development.

Rely on OTG and EH Targeted Peripherals List found in drivers/usb/core/Kconfig

The configuration item CONFIG_USB_OTG_WHITELIST:

Help text

If you say Y here, the "otg_whitelist.h" file will be used as a product whitelist, so USB peripherals not listed there will be rejected during enumeration. This behavior is required by the USB OTG and EH specification for all devices not on your product's "Targeted Peripherals List". "Embedded Hosts" are likewise allowed to support only a limited number of peripherals.

Hardware

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