menuconfig THUNDERBOLT tristate "Thunderbolt support for Apple devices" depends on PCI depends on X86 || COMPILE_TEST select APPLE_PROPERTIES if EFI_STUB && X86 select CRC32 help Cactus Ridge Thunderbolt Controller driver This driver is required if you want to hotplug Thunderbolt devices on Apple hardware. Device chaining is currently not supported. To compile this driver a module, choose M here. The module will be called thunderbolt.