1# SPDX-License-Identifier: GPL-2.0-only 2menuconfig USB4 3 tristate "Unified support for USB4 and Thunderbolt" 4 depends on PCI 5 select APPLE_PROPERTIES if EFI_STUB && X86 6 select CRC32 7 select CRYPTO 8 select CRYPTO_HASH 9 select NVMEM 10 help 11 USB4 and Thunderbolt driver. USB4 is the public specification 12 based on the Thunderbolt 3 protocol. This driver is required if 13 you want to hotplug Thunderbolt and USB4 compliant devices on 14 Apple hardware or on PCs with Intel Falcon Ridge or newer. 15 16 To compile this driver a module, choose M here. The module will be 17 called thunderbolt. 18 19if USB4 20 21config USB4_DEBUGFS_WRITE 22 bool "Enable write by debugfs to configuration spaces (DANGEROUS)" 23 help 24 Enables writing to device configuration registers through 25 debugfs interface. 26 27 Only enable this if you know what you are doing! Never enable 28 this for production systems or distro kernels. 29 30config USB4_KUNIT_TEST 31 bool "KUnit tests" 32 depends on KUNIT=y 33 34config USB4_DMA_TEST 35 tristate "DMA traffic test driver" 36 depends on DEBUG_FS 37 help 38 This allows sending and receiving DMA traffic through loopback 39 connection. Loopback connection can be done by either special 40 dongle that has TX/RX lines crossed, or by simply connecting a 41 cable back to the host. Only enable this if you know what you 42 are doing. Normal users and distro kernels should say N here. 43 44 To compile this driver a module, choose M here. The module will be 45 called thunderbolt_dma_test. 46 47endif # USB4 48