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CONFIG_USB_ULPI_BUS: USB ULPI PHY interface support

General informations

The Linux kernel configuration item CONFIG_USB_ULPI_BUS has multiple definitions:

USB ULPI PHY interface support found in drivers/usb/Kconfig

The configuration item CONFIG_USB_ULPI_BUS:

Help text

UTMI+ Low Pin Interface (ULPI) is specification for a commonly used USB 2.0 PHY interface. The ULPI specification defines a standard set of registers that can be used to detect the vendor and product which allows ULPI to be handled as a bus. This module is the driver for that bus.

The ULPI interfaces (the buses) are registered by the drivers for USB controllers which support ULPI register access and have ULPI PHY attached to them. The ULPI PHY drivers themselves are normal PHY drivers.

ULPI PHYs provide often functions such as ADP sensing/probing (OTG protocol) and USB charger detection.

To compile this driver as a module, choose M here: the module will be called ulpi.

USB ULPI PHY interface support found in drivers/usb/core/Kconfig

The configuration item CONFIG_USB_ULPI_BUS:

Help text

UTMI+ Low Pin Interface (ULPI) is specification for a commonly used USB 2.0 PHY interface. The ULPI specification defines a standard set of registers that can be used to detect the vendor and product which allows ULPI to be handled as a bus. This module is the driver for that bus.

The ULPI interfaces (the buses) are registered by the drivers for USB controllers which support ULPI register access and have ULPI PHY attached to them. The ULPI PHY drivers themselves are normal PHY drivers.

ULPI PHYs provide often functions such as ADP sensing/probing (OTG protocol) and USB charger detection.

To compile this driver as a module, choose M here: the module will be called ulpi.

Hardware

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