# SPDX-License-Identifier: GPL-2.0-only

  menuconfig USB4
  	tristate "Unified support for USB4 and Thunderbolt"

  	depends on PCI

  	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 specification
  	  based on the 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.

  if USB4

  config USB4_DEBUGFS_WRITE
  	bool "Enable write by debugfs to configuration spaces (DANGEROUS)"

  	help
  	  Enables writing to device configuration registers through
  	  debugfs interface.
  
  	  Only enable this if you know what you are doing! Never enable
  	  this for production systems or distro kernels.

  config USB4_KUNIT_TEST
  	bool "KUnit tests"
  	depends on KUNIT=y

  
  endif # USB4