# SPDX-License-Identifier: GPL-2.0-only menuconfig USB4 tristate "Unified support for USB4 and Thunderbolt" depends on PCI depends on X86 || COMPILE_TEST select APPLE_PROPERTIES if EFI_STUB && X86 select CRC32 select CRYPTO select CRYPTO_HASH select NVMEM help USB4 and Thunderbolt driver. USB4 is the public speficiation based on Thunderbolt 3 protocol. This driver is required if you want to hotplug Thunderbolt and USB4 compliant devices on Apple hardware or on PCs with Intel Falcon Ridge or newer. To compile this driver a module, choose M here. The module will be called thunderbolt.