# SPDX-License-Identifier: GPL-2.0 config USB_COMMON tristate config USB_LED_TRIG bool "USB LED Triggers" depends on LEDS_CLASS && LEDS_TRIGGERS select USB_COMMON help This option adds LED triggers for USB host and/or gadget activity. Say Y here if you are working on a system with led-class supported LEDs and you want to use them as activity indicators for USB host or gadget. config USB_ULPI_BUS tristate "USB ULPI PHY interface support" select USB_COMMON help 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. config USB_CONN_GPIO tristate "USB GPIO Based Connection Detection Driver" depends on GPIOLIB select USB_ROLE_SWITCH help The driver supports USB role switch between host and device via GPIO based USB cable detection, used typically if an input GPIO is used to detect USB ID pin, and another input GPIO may be also used to detect Vbus pin at the same time, it also can be used to enable/disable device if an input GPIO is only used to detect Vbus pin. To compile the driver as a module, choose M here: the module will be called usb-conn-gpio.ko