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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# USB Host Controller Drivers
3#
4comment "USB Host Controller Drivers"
Linus Torvalds1da177e2005-04-16 15:20:36 -07005
Peter Korsgaarde9b29ff2008-04-27 08:59:45 +02006config USB_C67X00_HCD
7 tristate "Cypress C67x00 HCD support"
Peter Korsgaarde9b29ff2008-04-27 08:59:45 +02008 help
9 The Cypress C67x00 (EZ-Host/EZ-OTG) chips are dual-role
10 host/peripheral/OTG USB controllers.
11
12 Enable this option to support this chip in host controller mode.
13 If unsure, say N.
14
15 To compile this driver as a module, choose M here: the
16 module will be called c67x00.
17
Sarah Sharpeb6bab12009-04-29 19:07:13 -070018config USB_XHCI_HCD
Greg Kroah-Hartmaneb83be92012-09-14 21:15:50 -070019 tristate "xHCI HCD (USB 3.0) support"
Sarah Sharpeb6bab12009-04-29 19:07:13 -070020 ---help---
21 The eXtensible Host Controller Interface (xHCI) is standard for USB 3.0
22 "SuperSpeed" host controller hardware.
23
24 To compile this driver as a module, choose M here: the
25 module will be called xhci-hcd.
26
Florian Fainelli0fcb9982013-04-09 14:29:29 +020027if USB_XHCI_HCD
28
Andrew Bresticker29e409f2014-10-03 11:35:29 +030029config USB_XHCI_PCI
30 tristate
31 depends on PCI
32 default y
33
Sebastian Andrzej Siewior3429e912012-03-13 16:57:41 +020034config USB_XHCI_PLATFORM
35 tristate
Sebastian Andrzej Siewior3429e912012-03-13 16:57:41 +020036
Gregory CLEMENT97374792014-05-15 12:17:33 +020037config USB_XHCI_MVEBU
38 tristate "xHCI support for Marvell Armada 375/38x"
39 select USB_XHCI_PLATFORM
40 depends on ARCH_MVEBU || COMPILE_TEST
41 ---help---
42 Say 'Y' to enable the support for the xHCI host controller
43 found in Marvell Armada 375/38x ARM SOCs.
44
Yoshihiro Shimoda4ac89182014-07-09 10:08:52 +090045config USB_XHCI_RCAR
46 tristate "xHCI support for Renesas R-Car SoCs"
47 select USB_XHCI_PLATFORM
48 depends on ARCH_SHMOBILE || COMPILE_TEST
49 ---help---
50 Say 'Y' to enable the support for the xHCI host controller
51 found in Renesas R-Car ARM SoCs.
52
Florian Fainelli0fcb9982013-04-09 14:29:29 +020053endif # USB_XHCI_HCD
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055config USB_EHCI_HCD
56 tristate "EHCI HCD (USB 2.0) support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 ---help---
58 The Enhanced Host Controller Interface (EHCI) is standard for USB 2.0
59 "high speed" (480 Mbit/sec, 60 Mbyte/sec) host controller hardware.
60 If your USB host controller supports USB 2.0, you will likely want to
Thierry Vignaudb967c882009-02-11 13:31:05 -080061 configure this Host Controller Driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
63 EHCI controllers are packaged with "companion" host controllers (OHCI
64 or UHCI) to handle USB 1.1 devices connected to root hub ports. Ports
Jesper Juhlb3c29d82006-01-10 00:35:22 +010065 will connect to EHCI if the device is high speed, otherwise they
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 connect to a companion controller. If you configure EHCI, you should
67 probably configure the OHCI (for NEC and some other vendors) USB Host
68 Controller Driver or UHCI (for Via motherboards) Host Controller
69 Driver too.
70
71 You may want to read <file:Documentation/usb/ehci.txt>.
72
73 To compile this driver as a module, choose M here: the
74 module will be called ehci-hcd.
75
Linus Torvalds1da177e2005-04-16 15:20:36 -070076config USB_EHCI_ROOT_HUB_TT
Robert P. J. Day9ec249a2008-03-08 03:27:44 -050077 bool "Root Hub Transaction Translators"
Peter Chena746c282013-09-17 12:37:18 +080078 depends on USB_EHCI_HCD
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 ---help---
80 Some EHCI chips have vendor-specific extensions to integrate
81 transaction translators, so that no OHCI or UHCI companion
82 controller is needed. It's safe to say "y" even if your
83 controller doesn't support this feature.
84
Dan Streetmanba47f662006-05-24 09:39:16 -070085 This supports the EHCI implementation that's originally
86 from ARC, and has since changed hands a few times.
87
88config USB_EHCI_TT_NEWSCHED
Alan Stern37cd6812010-05-21 17:08:21 -040089 bool "Improved Transaction Translator scheduling"
Peter Chena746c282013-09-17 12:37:18 +080090 depends on USB_EHCI_HCD
Alan Stern37cd6812010-05-21 17:08:21 -040091 default y
Dan Streetmanba47f662006-05-24 09:39:16 -070092 ---help---
93 This changes the periodic scheduling code to fill more of the low
94 and full speed bandwidth available from the Transaction Translator
95 (TT) in USB 2.0 hubs. Without this, only one transfer will be
96 issued in each microframe, significantly reducing the number of
97 periodic low/fullspeed transfers possible.
98
99 If you have multiple periodic low/fullspeed devices connected to a
100 highspeed USB hub which is connected to a highspeed USB Host
101 Controller, and some of those devices will not work correctly
Alan Stern37cd6812010-05-21 17:08:21 -0400102 (possibly due to "ENOSPC" or "-28" errors), say Y. Conversely, if
103 you have only one such device and it doesn't work, you could try
104 saying N.
Dan Streetmanba47f662006-05-24 09:39:16 -0700105
Alan Stern37cd6812010-05-21 17:08:21 -0400106 If unsure, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
Florian Fainelli42443dc2013-04-09 14:29:27 +0200108config USB_FSL_MPH_DR_OF
109 tristate
110
111if USB_EHCI_HCD
112
Alan Sternadfa79d2012-11-01 11:13:04 -0400113config USB_EHCI_PCI
114 tristate
Florian Fainelli42443dc2013-04-09 14:29:27 +0200115 depends on PCI
Alan Sternadfa79d2012-11-01 11:13:04 -0400116 default y
117
Anoop22ced6872011-02-24 19:26:28 +0530118config USB_EHCI_HCD_PMC_MSP
119 tristate "EHCI support for on-chip PMC MSP71xx USB controller"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200120 depends on MSP_HAS_USB
Anoop22ced6872011-02-24 19:26:28 +0530121 default n
122 select USB_EHCI_BIG_ENDIAN_DESC
123 select USB_EHCI_BIG_ENDIAN_MMIO
124 ---help---
125 Enables support for the onchip USB controller on the PMC_MSP7100 Family SoC's.
126 If unsure, say N.
127
Julie Zhu08d3c182009-09-21 16:08:19 -0600128config XPS_USB_HCD_XILINX
129 bool "Use Xilinx usb host EHCI controller core"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200130 depends on (PPC32 || MICROBLAZE)
Julie Zhu08d3c182009-09-21 16:08:19 -0600131 select USB_EHCI_BIG_ENDIAN_DESC
132 select USB_EHCI_BIG_ENDIAN_MMIO
133 ---help---
Masanari Iidaf54619f2014-09-18 12:09:42 +0900134 Xilinx xps USB host controller core is EHCI compliant and has
Julie Zhu08d3c182009-09-21 16:08:19 -0600135 transaction translator built-in. It can be configured to either
136 support both high speed and full speed devices, or high speed
137 devices only.
138
Li Yangba029782007-05-11 17:09:55 +0800139config USB_EHCI_FSL
Fabio Estevamc0ca9bc2012-02-02 14:23:34 -0200140 bool "Support for Freescale PPC on-chip EHCI USB controller"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200141 depends on FSL_SOC
Li Yangba029782007-05-11 17:09:55 +0800142 select USB_EHCI_ROOT_HUB_TT
Marc Kleine-Budde018b97d2010-10-29 11:04:49 +0200143 select USB_FSL_MPH_DR_OF if OF
Li Yangba029782007-05-11 17:09:55 +0800144 ---help---
145 Variation of ARC USB block used in some Freescale chips.
146
Daniel Mack7e8d5cd2009-10-28 01:14:59 +0100147config USB_EHCI_MXC
Alan Sterndba63b22013-01-23 13:26:15 -0500148 tristate "Support for Freescale i.MX on-chip EHCI USB controller"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200149 depends on ARCH_MXC
Daniel Mack7e8d5cd2009-10-28 01:14:59 +0100150 select USB_EHCI_ROOT_HUB_TT
151 ---help---
152 Variation of ARC USB block used in some Freescale chips.
153
Keshava Munegowda7f124f42010-11-21 23:23:41 +0530154config USB_EHCI_HCD_OMAP
Alan Stern54a419662013-03-12 12:44:39 +0200155 tristate "EHCI support for OMAP3 and later chips"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200156 depends on ARCH_OMAP
Roger Quadros88650d62013-06-14 12:51:42 +0300157 select NOP_USB_XCEIV
Keshava Munegowda7f124f42010-11-21 23:23:41 +0530158 default y
Paul Bolled132d7f2012-05-07 11:14:59 +0200159 ---help---
Keshava Munegowda7f124f42010-11-21 23:23:41 +0530160 Enables support for the on-chip EHCI controller on
161 OMAP3 and later chips.
162
Manjunath Goudara76dd462013-04-02 18:23:59 +0200163config USB_EHCI_HCD_ORION
164 tristate "Support for Marvell EBU on-chip EHCI USB controller"
165 depends on USB_EHCI_HCD && PLAT_ORION
166 default y
167 ---help---
168 Enables support for the on-chip EHCI controller on Marvell's
169 embedded ARM SoCs, including Orion, Kirkwood, Dove, Armada XP,
170 Armada 370. This is different from the EHCI implementation
171 on Marvell's mobile PXA and MMP SoC, see "EHCI support for
172 Marvell PXA/MMP USB controller" for those.
173
Manjunath Goudar7675d6b2013-04-02 18:24:00 +0200174config USB_EHCI_HCD_SPEAR
175 tristate "Support for ST SPEAr on-chip EHCI USB controller"
176 depends on USB_EHCI_HCD && PLAT_SPEAR
177 default y
178 ---help---
179 Enables support for the on-chip EHCI controller on
180 ST SPEAr chips.
181
Arnd Bergmann905e3002014-09-29 14:54:34 +0200182config USB_EHCI_HCD_STI
183 tristate "Support for ST STiHxxx on-chip EHCI USB controller"
184 depends on ARCH_STI && OF
185 select GENERIC_PHY
186 select USB_EHCI_HCD_PLATFORM
187 help
188 Enable support for the on-chip EHCI controller found on
189 STMicroelectronics consumer electronics SoC's.
190
Manjunath Goudar97736962013-04-02 18:24:02 +0200191config USB_EHCI_HCD_AT91
192 tristate "Support for Atmel on-chip EHCI USB controller"
193 depends on USB_EHCI_HCD && ARCH_AT91
194 default y
195 ---help---
196 Enables support for the on-chip EHCI controller on
197 Atmel chips.
198
Pavankumar Kondetib0848ae2010-12-07 17:53:56 +0530199config USB_EHCI_MSM
Manjunath Goudar8c68e842013-04-02 18:24:03 +0200200 tristate "Support for Qualcomm QSD/MSM on-chip EHCI USB controller"
Srinivas Kandagatla8ae587e2014-06-30 18:29:34 +0100201 depends on ARCH_MSM || ARCH_QCOM
Pavankumar Kondetib0848ae2010-12-07 17:53:56 +0530202 select USB_EHCI_ROOT_HUB_TT
Pavankumar Kondetib0848ae2010-12-07 17:53:56 +0530203 ---help---
204 Enables support for the USB Host controller present on the
205 Qualcomm chipsets. Root Hub has inbuilt TT.
206 This driver depends on OTG driver for PHY initialization,
Pavankumar Kondeti8bb6a162010-12-07 17:53:57 +0530207 clock management, powering up VBUS, and power management.
Pavankumar Kondeti8cf28f12011-02-04 10:08:18 +0530208 This driver is not supported on boards like trout which
209 has an external PHY.
Pavankumar Kondetib0848ae2010-12-07 17:53:56 +0530210
Benoit Goby79ad3b52011-03-09 16:28:56 -0800211config USB_EHCI_TEGRA
Manjunath Goudar9fc5f242013-06-13 11:24:12 -0600212 tristate "NVIDIA Tegra HCD support"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200213 depends on ARCH_TEGRA
Benoit Goby79ad3b52011-03-09 16:28:56 -0800214 select USB_EHCI_ROOT_HUB_TT
Felipe Balbi75f32ec2013-03-20 14:18:28 +0200215 select USB_PHY
Benoit Goby79ad3b52011-03-09 16:28:56 -0800216 help
217 This driver enables support for the internal USB Host Controllers
218 found in NVIDIA Tegra SoCs. The controllers are EHCI compliant.
219
Valentine Barshakda0e8fb2007-12-30 15:28:50 -0800220config USB_EHCI_HCD_PPC_OF
221 bool "EHCI support for PPC USB controller on OF platform bus"
Kevin Haoc31316c2015-01-31 21:47:44 +0800222 depends on PPC
Valentine Barshakda0e8fb2007-12-30 15:28:50 -0800223 default y
224 ---help---
225 Enables support for the USB controller present on the PowerPC
226 OpenFirmware platform bus.
227
Yoshihiro Shimoda60b0bf02011-03-01 16:58:37 +0900228config USB_EHCI_SH
229 bool "EHCI support for SuperH USB controller"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200230 depends on SUPERH
Yoshihiro Shimoda60b0bf02011-03-01 16:58:37 +0900231 ---help---
232 Enables support for the on-chip EHCI controller on the SuperH.
233 If you use the PCI EHCI controller, this option is not necessary.
234
Jingoo Han29824c12013-10-10 16:42:47 +0900235config USB_EHCI_EXYNOS
Manjunath Goudar7edb3da2013-04-02 18:24:01 +0200236 tristate "EHCI support for Samsung S5P/EXYNOS SoC Series"
Sylwester Nawrockicd6e2452014-10-07 11:12:07 +0200237 depends on ARCH_S5PV210 || ARCH_EXYNOS
Greg Kroah-Hartmane9a92b22013-02-20 10:25:05 -0800238 help
Jingoo Han29824c12013-10-10 16:42:47 +0900239 Enable support for the Samsung Exynos SOC's on-chip EHCI controller.
Joonyoung Shim1bcc5aa2011-04-08 14:08:50 +0900240
Neil Zhang3a082ec2011-12-20 13:20:23 +0800241config USB_EHCI_MV
Manjunath Goudara76dd462013-04-02 18:23:59 +0200242 bool "EHCI support for Marvell PXA/MMP USB controller"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200243 depends on (ARCH_PXA || ARCH_MMP)
Neil Zhang3a082ec2011-12-20 13:20:23 +0800244 select USB_EHCI_ROOT_HUB_TT
245 ---help---
246 Enables support for Marvell (including PXA and MMP series) on-chip
247 USB SPH and OTG controller. SPH is a single port host, and it can
248 only be EHCI host. OTG is controller that can switch to host mode.
Manjunath Goudara76dd462013-04-02 18:23:59 +0200249 Note that this driver will not work on Marvell's other EHCI
250 controller used by the EBU-type SoCs including Orion, Kirkwood,
251 Dova, Armada 370 and Armada XP. See "Support for Marvell EBU
252 on-chip EHCI USB controller" for those.
Neil Zhang3a082ec2011-12-20 13:20:23 +0800253
Wan ZongShun586dfc82009-06-13 09:14:28 +0800254config USB_W90X900_EHCI
Manjunath Goudara60f4f82013-09-21 16:44:42 +0530255 tristate "W90X900(W90P910) EHCI support"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200256 depends on ARCH_W90X900
Wan ZongShun586dfc82009-06-13 09:14:28 +0800257 ---help---
258 Enables support for the W90X900 USB controller
259
Mac Lin760efe62010-11-25 23:58:00 +0800260config USB_CNS3XXX_EHCI
Florian Fainellif3a958d2012-10-08 15:11:25 +0200261 bool "Cavium CNS3XXX EHCI Module (DEPRECATED)"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200262 depends on ARCH_CNS3XXX
Florian Fainellif3a958d2012-10-08 15:11:25 +0200263 select USB_EHCI_HCD_PLATFORM
Mac Lin760efe62010-11-25 23:58:00 +0800264 ---help---
Florian Fainellif3a958d2012-10-08 15:11:25 +0200265 This option is deprecated now and the driver was removed, use
266 USB_EHCI_HCD_PLATFORM instead.
267
Mac Lin760efe62010-11-25 23:58:00 +0800268 Enable support for the CNS3XXX SOC's on-chip EHCI controller.
269 It is needed for high-speed (480Mbit/sec) USB 2.0 device
270 support.
271
Gabor Juhos502fa842011-04-13 10:54:22 +0200272config USB_EHCI_ATH79
Hauke Mehrtens5d98cd42012-03-13 01:04:53 +0100273 bool "EHCI support for AR7XXX/AR9XXX SoCs (DEPRECATED)"
Florian Fainelli42443dc2013-04-09 14:29:27 +0200274 depends on (SOC_AR71XX || SOC_AR724X || SOC_AR913X || SOC_AR933X)
Gabor Juhos502fa842011-04-13 10:54:22 +0200275 select USB_EHCI_ROOT_HUB_TT
Hauke Mehrtens5d98cd42012-03-13 01:04:53 +0100276 select USB_EHCI_HCD_PLATFORM
Gabor Juhos502fa842011-04-13 10:54:22 +0200277 default y
278 ---help---
Hauke Mehrtens5d98cd42012-03-13 01:04:53 +0100279 This option is deprecated now and the driver was removed, use
280 USB_EHCI_HCD_PLATFORM instead.
281
Gabor Juhos502fa842011-04-13 10:54:22 +0200282 Enables support for the built-in EHCI controller present
283 on the Atheros AR7XXX/AR9XXX SoCs.
284
Florian Fainelli42443dc2013-04-09 14:29:27 +0200285config USB_EHCI_HCD_PLATFORM
286 tristate "Generic EHCI driver for a platform device"
287 default n
288 ---help---
289 Adds an EHCI host driver for a generic platform device, which
290 provides a memory space and an irq.
291
292 If unsure, say N.
293
294config USB_OCTEON_EHCI
Alan Stern2193dda2014-11-25 12:28:46 +0100295 bool "Octeon on-chip EHCI support (DEPRECATED)"
David Daney9ddebc42013-05-22 15:10:46 +0000296 depends on CAVIUM_OCTEON_SOC
Florian Fainelli42443dc2013-04-09 14:29:27 +0200297 default n
298 select USB_EHCI_BIG_ENDIAN_MMIO
Alan Stern2193dda2014-11-25 12:28:46 +0100299 select USB_EHCI_HCD_PLATFORM
Florian Fainelli42443dc2013-04-09 14:29:27 +0200300 help
Alan Stern2193dda2014-11-25 12:28:46 +0100301 This option is deprecated now and the driver was removed, use
302 USB_EHCI_HCD_PLATFORM instead.
303
Florian Fainelli42443dc2013-04-09 14:29:27 +0200304 Enable support for the Octeon II SOC's on-chip EHCI
305 controller. It is needed for high-speed (480Mbit/sec)
306 USB 2.0 device support. All CN6XXX based chips with USB are
307 supported.
308
309endif # USB_EHCI_HCD
310
Rodolfo Giomettib92a78e2008-10-23 10:08:07 +0200311config USB_OXU210HP_HCD
312 tristate "OXU210HP HCD support"
Rodolfo Giomettib92a78e2008-10-23 10:08:07 +0200313 ---help---
314 The OXU210HP is an USB host/OTG/device controller. Enable this
315 option if your board has this chip. If unsure, say N.
316
317 This driver does not support isochronous transfers and doesn't
318 implement OTG nor USB device controllers.
319
320 To compile this driver as a module, choose M here: the
321 module will be called oxu210hp-hcd.
322
Olav Kongas4808a1c2005-04-09 22:57:39 +0300323config USB_ISP116X_HCD
324 tristate "ISP116X HCD support"
Olav Kongas4808a1c2005-04-09 22:57:39 +0300325 ---help---
326 The ISP1160 and ISP1161 chips are USB host controllers. Enable this
327 option if your board has this chip. If unsure, say N.
328
329 This driver does not support isochronous transfers.
330
331 To compile this driver as a module, choose M here: the
332 module will be called isp116x-hcd.
333
Lothar Wassmanna9d43092009-07-16 20:51:21 -0400334config USB_ISP1362_HCD
335 tristate "ISP1362 HCD support"
Lothar Wassmanna9d43092009-07-16 20:51:21 -0400336 ---help---
337 Supports the Philips ISP1362 chip as a host controller
338
339 This driver does not support isochronous transfers.
340
341 To compile this driver as a module, choose M here: the
342 module will be called isp1362-hcd.
343
Yuan-Hsin Chen6c920bfb2013-05-17 10:14:14 +0000344config USB_FUSBH200_HCD
345 tristate "FUSBH200 HCD support"
346 depends on USB
Yuan-Hsin Chen6c920bfb2013-05-17 10:14:14 +0000347 ---help---
348 Faraday FUSBH200 is designed to meet USB2.0 EHCI specification
349 with minor modification.
350
351 To compile this driver as a module, choose M here: the
352 module will be called fusbh200-hcd.
353
Feng-Hsin Chiang7d501952013-07-29 16:48:32 +0000354config USB_FOTG210_HCD
355 tristate "FOTG210 HCD support"
356 depends on USB
Feng-Hsin Chiang7d501952013-07-29 16:48:32 +0000357 ---help---
358 Faraday FOTG210 is an OTG controller which can be configured as
359 an USB2.0 host. It is designed to meet USB2.0 EHCI specification
360 with minor modification.
361
362 To compile this driver as a module, choose M here: the
363 module will be called fotg210-hcd.
364
David Mosberger2d531392014-04-28 22:14:07 -0600365config USB_MAX3421_HCD
366 tristate "MAX3421 HCD (USB-over-SPI) support"
367 depends on USB && SPI
368 ---help---
369 The Maxim MAX3421E chip supports standard USB 2.0-compliant
370 full-speed devices either in host or peripheral mode. This
371 driver supports the host-mode of the MAX3421E only.
372
373 To compile this driver as a module, choose M here: the module will
374 be called max3421-hcd.
375
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376config USB_OHCI_HCD
Manjunath Goudarc1117af2013-05-28 18:34:51 +0530377 tristate "OHCI HCD (USB 1.1) support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 ---help---
379 The Open Host Controller Interface (OHCI) is a standard for accessing
380 USB 1.1 host controller hardware. It does more in hardware than Intel's
381 UHCI specification. If your USB host controller follows the OHCI spec,
382 say Y. On most non-x86 systems, and on x86 hardware that's not using a
383 USB controller from Intel or VIA, this is appropriate. If your host
384 controller doesn't use PCI, this is probably appropriate. For a PCI
385 based system where you're not sure, the "lspci -v" entry will list the
386 right "prog-if" for your USB controller(s): EHCI, OHCI, or UHCI.
387
388 To compile this driver as a module, choose M here: the
389 module will be called ohci-hcd.
390
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200391if USB_OHCI_HCD
392
Anand Gadiyar968b4482010-05-10 21:56:12 +0530393config USB_OHCI_HCD_OMAP1
Manjunath Goudarde57a152013-09-21 16:38:39 +0530394 tristate "OHCI support for OMAP1/2 chips"
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200395 depends on ARCH_OMAP1
Arnd Bergmann38e0c102014-05-08 15:52:20 +0200396 depends on ISP1301_OMAP || !(MACH_OMAP_H2 || MACH_OMAP_H3)
Anand Gadiyar968b4482010-05-10 21:56:12 +0530397 default y
398 ---help---
399 Enables support for the OHCI controller on OMAP1/2 chips.
400
Manjunath Goudar1cc6ac52013-09-21 16:38:41 +0530401config USB_OHCI_HCD_SPEAR
402 tristate "Support for ST SPEAr on-chip OHCI USB controller"
403 depends on USB_OHCI_HCD && PLAT_SPEAR
404 default y
405 ---help---
406 Enables support for the on-chip OHCI controller on
407 ST SPEAr chips.
408
Arnd Bergmann905e3002014-09-29 14:54:34 +0200409config USB_OHCI_HCD_STI
410 tristate "Support for ST STiHxxx on-chip OHCI USB controller"
411 depends on ARCH_STI && OF
412 select GENERIC_PHY
413 select USB_OHCI_HCD_PLATFORM
414 help
415 Enable support for the on-chip OHCI controller found on
416 STMicroelectronics consumer electronics SoC's.
417
Manjunath Goudarf23b71f2013-09-21 16:38:43 +0530418config USB_OHCI_HCD_S3C2410
419 tristate "OHCI support for Samsung S3C24xx/S3C64xx SoC series"
420 depends on USB_OHCI_HCD && (ARCH_S3C24XX || ARCH_S3C64XX)
421 default y
422 ---help---
423 Enables support for the on-chip OHCI controller on
424 S3C24xx/S3C64xx chips.
425
Manjunath Goudar30330b82013-09-21 16:38:44 +0530426config USB_OHCI_HCD_LPC32XX
427 tristate "Support for LPC on-chip OHCI USB controller"
428 depends on USB_OHCI_HCD && ARCH_LPC32XX
Arnd Bergmann38e0c102014-05-08 15:52:20 +0200429 depends on USB_ISP1301
Manjunath Goudar30330b82013-09-21 16:38:44 +0530430 default y
431 ---help---
432 Enables support for the on-chip OHCI controller on
433 NXP chips.
434
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530435config USB_OHCI_HCD_PXA27X
436 tristate "Support for PXA27X/PXA3XX on-chip OHCI USB controller"
437 depends on USB_OHCI_HCD && (PXA27x || PXA3xx)
438 default y
439 ---help---
440 Enables support for the on-chip OHCI controller on
441 PXA27x/PXA3xx chips.
442
Manjunath Goudare3825b42013-09-21 16:38:42 +0530443config USB_OHCI_HCD_AT91
444 tristate "Support for Atmel on-chip OHCI USB controller"
445 depends on USB_OHCI_HCD && ARCH_AT91
446 default y
447 ---help---
448 Enables support for the on-chip OHCI controller on
449 Atmel chips.
450
Anand Gadiyar968b4482010-05-10 21:56:12 +0530451config USB_OHCI_HCD_OMAP3
Manjunath Goudar3a48fef2013-09-21 16:38:40 +0530452 tristate "OHCI support for OMAP3 and later chips"
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200453 depends on (ARCH_OMAP3 || ARCH_OMAP4)
Anand Gadiyar968b4482010-05-10 21:56:12 +0530454 default y
455 ---help---
456 Enables support for the on-chip OHCI controller on
457 OMAP3 and later chips.
458
Arnd Bergmann068413e2014-05-08 15:52:21 +0200459config USB_OHCI_HCD_DAVINCI
460 bool "OHCI support for TI DaVinci DA8xx"
461 depends on ARCH_DAVINCI_DA8XX
462 depends on USB_OHCI_HCD=y
463 default y
464 help
465 Enables support for the DaVinci DA8xx integrated OHCI
466 controller. This driver cannot currently be a loadable
467 module because it lacks a proper PHY abstraction.
468
Gabor Juhos90e6ca52011-04-13 10:54:24 +0200469config USB_OHCI_ATH79
Hauke Mehrtens5d98cd42012-03-13 01:04:53 +0100470 bool "USB OHCI support for the Atheros AR71XX/AR7240 SoCs (DEPRECATED)"
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200471 depends on (SOC_AR71XX || SOC_AR724X)
Hauke Mehrtens5d98cd42012-03-13 01:04:53 +0100472 select USB_OHCI_HCD_PLATFORM
Gabor Juhos90e6ca52011-04-13 10:54:24 +0200473 default y
474 help
Hauke Mehrtens5d98cd42012-03-13 01:04:53 +0100475 This option is deprecated now and the driver was removed, use
476 USB_OHCI_HCD_PLATFORM instead.
477
Gabor Juhos90e6ca52011-04-13 10:54:24 +0200478 Enables support for the built-in OHCI controller present on the
479 Atheros AR71XX/AR7240 SoCs.
480
Sylvain Munaut495a6782006-12-13 21:09:55 +0100481config USB_OHCI_HCD_PPC_OF_BE
Arnd Bergmann45e83882009-06-19 05:35:34 -0700482 bool "OHCI support for OF platform bus (big endian)"
Kevin Haoc31316c2015-01-31 21:47:44 +0800483 depends on PPC
Sylvain Munaut495a6782006-12-13 21:09:55 +0100484 select USB_OHCI_BIG_ENDIAN_DESC
485 select USB_OHCI_BIG_ENDIAN_MMIO
Arnd Bergmann45e83882009-06-19 05:35:34 -0700486 ---help---
487 Enables support for big-endian USB controllers present on the
488 OpenFirmware platform bus.
Sylvain Munaut495a6782006-12-13 21:09:55 +0100489
490config USB_OHCI_HCD_PPC_OF_LE
Arnd Bergmann45e83882009-06-19 05:35:34 -0700491 bool "OHCI support for OF platform bus (little endian)"
Kevin Haoc31316c2015-01-31 21:47:44 +0800492 depends on PPC
Sylvain Munaut495a6782006-12-13 21:09:55 +0100493 select USB_OHCI_LITTLE_ENDIAN
Arnd Bergmann45e83882009-06-19 05:35:34 -0700494 ---help---
495 Enables support for little-endian USB controllers present on the
496 OpenFirmware platform bus.
497
498config USB_OHCI_HCD_PPC_OF
499 bool
Kevin Haoc31316c2015-01-31 21:47:44 +0800500 depends on PPC
Arnd Bergmann45e83882009-06-19 05:35:34 -0700501 default USB_OHCI_HCD_PPC_OF_BE || USB_OHCI_HCD_PPC_OF_LE
Sylvain Munaut495a6782006-12-13 21:09:55 +0100502
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503config USB_OHCI_HCD_PCI
Manjunath Goudarc1117af2013-05-28 18:34:51 +0530504 tristate "OHCI support for PCI-bus USB controllers"
505 depends on PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 default y
507 select USB_OHCI_LITTLE_ENDIAN
508 ---help---
509 Enables support for PCI-bus plug-in USB controller cards.
510 If unsure, say Y.
511
Michael Bueschc604e852007-10-09 23:47:17 -0700512config USB_OHCI_HCD_SSB
Hauke Mehrtens259b83a2012-03-15 23:49:59 +0100513 bool "OHCI support for Broadcom SSB OHCI core (DEPRECATED)"
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200514 depends on (SSB = y || SSB = USB_OHCI_HCD)
Hauke Mehrtens259b83a2012-03-15 23:49:59 +0100515 select USB_HCD_SSB
516 select USB_OHCI_HCD_PLATFORM
Michael Bueschc604e852007-10-09 23:47:17 -0700517 default n
518 ---help---
Hauke Mehrtens259b83a2012-03-15 23:49:59 +0100519 This option is deprecated now and the driver was removed, use
520 USB_HCD_SSB and USB_OHCI_HCD_PLATFORM instead.
521
Michael Bueschc604e852007-10-09 23:47:17 -0700522 Support for the Sonics Silicon Backplane (SSB) attached
523 Broadcom USB OHCI core.
524
525 This device is present in some embedded devices with
526 Broadcom based SSB bus.
527
528 If unsure, say N.
529
Yoshihiro Shimoda60b0bf02011-03-01 16:58:37 +0900530config USB_OHCI_SH
Florian Fainelli231a72e2012-10-08 15:11:37 +0200531 bool "OHCI support for SuperH USB controller (DEPRECATED)"
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200532 depends on SUPERH
Florian Fainelli231a72e2012-10-08 15:11:37 +0200533 select USB_OHCI_HCD_PLATFORM
Yoshihiro Shimoda60b0bf02011-03-01 16:58:37 +0900534 ---help---
Florian Fainelli231a72e2012-10-08 15:11:37 +0200535 This option is deprecated now and the driver was removed, use
536 USB_OHCI_HCD_PLATFORM instead.
537
Yoshihiro Shimoda60b0bf02011-03-01 16:58:37 +0900538 Enables support for the on-chip OHCI controller on the SuperH.
539 If you use the PCI OHCI controller, this option is not necessary.
540
Jingoo Han62194242011-12-23 11:20:54 +0900541config USB_OHCI_EXYNOS
Manjunath Goudar50a97e02013-09-21 16:38:38 +0530542 tristate "OHCI support for Samsung S5P/EXYNOS SoC Series"
Sylwester Nawrockicd6e2452014-10-07 11:12:07 +0200543 depends on ARCH_S5PV210 || ARCH_EXYNOS
Jingoo Han62194242011-12-23 11:20:54 +0900544 help
545 Enable support for the Samsung Exynos SOC's on-chip OHCI controller.
546
Mac Lin760efe62010-11-25 23:58:00 +0800547config USB_CNS3XXX_OHCI
Florian Fainellic23920b02012-10-08 15:11:33 +0200548 bool "Cavium CNS3XXX OHCI Module (DEPRECATED)"
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200549 depends on ARCH_CNS3XXX
Florian Fainellic23920b02012-10-08 15:11:33 +0200550 select USB_OHCI_HCD_PLATFORM
Mac Lin760efe62010-11-25 23:58:00 +0800551 ---help---
Florian Fainellic23920b02012-10-08 15:11:33 +0200552 This option is deprecated now and the driver was removed, use
553 USB_OHCI_HCD_PLATFORM instead.
554
Mac Lin760efe62010-11-25 23:58:00 +0800555 Enable support for the CNS3XXX SOC's on-chip OHCI controller.
556 It is needed for low-speed USB 1.0 device support.
557
Hauke Mehrtensfa3364b2012-03-13 01:04:47 +0100558config USB_OHCI_HCD_PLATFORM
Manjunath Goudar928fb682013-06-03 20:46:08 +0530559 tristate "Generic OHCI driver for a platform device"
Hauke Mehrtensfa3364b2012-03-13 01:04:47 +0100560 default n
561 ---help---
562 Adds an OHCI host driver for a generic platform device, which
Peter Meerwald898d8282012-08-18 15:53:12 +0200563 provides a memory space and an irq.
Hauke Mehrtensfa3364b2012-03-13 01:04:47 +0100564
565 If unsure, say N.
566
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200567config USB_OCTEON_OHCI
Alan Stern2193dda2014-11-25 12:28:46 +0100568 bool "Octeon on-chip OHCI support (DEPRECATED)"
David Daney9ddebc42013-05-22 15:10:46 +0000569 depends on CAVIUM_OCTEON_SOC
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200570 default USB_OCTEON_EHCI
571 select USB_OHCI_BIG_ENDIAN_MMIO
572 select USB_OHCI_LITTLE_ENDIAN
Alan Stern2193dda2014-11-25 12:28:46 +0100573 select USB_OHCI_HCD_PLATFORM
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200574 help
Alan Stern2193dda2014-11-25 12:28:46 +0100575 This option is deprecated now and the driver was removed, use
576 USB_OHCI_HCD_PLATFORM instead.
577
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200578 Enable support for the Octeon II SOC's on-chip OHCI
579 controller. It is needed for low-speed USB 1.0 device
580 support. All CN6XXX based chips with USB are supported.
581
Florian Fainelli3ad3ca02013-04-09 14:29:28 +0200582endif # USB_OHCI_HCD
583
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584config USB_UHCI_HCD
585 tristate "UHCI HCD (most Intel and VIA) support"
Alan Sternccd95092013-05-14 13:54:12 -0400586 depends on PCI || USB_UHCI_SUPPORT_NON_PCI_HC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 ---help---
588 The Universal Host Controller Interface is a standard by Intel for
589 accessing the USB hardware in the PC (which is also called the USB
590 host controller). If your USB host controller conforms to this
591 standard, you may want to say Y, but see below. All recent boards
592 with Intel PCI chipsets (like intel 430TX, 440FX, 440LX, 440BX,
593 i810, i820) conform to this standard. Also all VIA PCI chipsets
594 (like VIA VP2, VP3, MVP3, Apollo Pro, Apollo Pro II or Apollo Pro
Jan Andersson3db77392011-05-06 12:00:18 +0200595 133) and LEON/GRLIB SoCs with the GRUSBHC controller.
596 If unsure, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597
598 To compile this driver as a module, choose M here: the
599 module will be called uhci-hcd.
600
Jan Anderssond3219d12011-05-06 12:00:17 +0200601config USB_UHCI_SUPPORT_NON_PCI_HC
602 bool
Alan Sternccd95092013-05-14 13:54:12 -0400603 default y if (SPARC_LEON || USB_UHCI_PLATFORM)
Tony Prisk100d4592012-07-21 22:58:53 +1200604
605config USB_UHCI_PLATFORM
Alan Sternccd95092013-05-14 13:54:12 -0400606 bool
Tony Prisk100d4592012-07-21 22:58:53 +1200607 default y if ARCH_VT8500
Jan Anderssond3219d12011-05-06 12:00:17 +0200608
Jan Andersson8452c672011-05-18 10:44:49 +0200609config USB_UHCI_BIG_ENDIAN_MMIO
610 bool
Alan Sternccd95092013-05-14 13:54:12 -0400611 default y if SPARC_LEON
Jan Andersson8452c672011-05-18 10:44:49 +0200612
Jan Andersson51e2f622011-05-18 10:44:51 +0200613config USB_UHCI_BIG_ENDIAN_DESC
614 bool
Alan Sternccd95092013-05-14 13:54:12 -0400615 default y if SPARC_LEON
Jan Andersson51e2f622011-05-18 10:44:51 +0200616
Anton Vorontsov236dd4d2009-01-10 05:03:21 +0300617config USB_FHCI_HCD
618 tristate "Freescale QE USB Host Controller support"
Florian Fainelli25e11ec2013-04-09 14:29:25 +0200619 depends on OF_GPIO && QE_GPIO && QUICC_ENGINE
Anton Vorontsov236dd4d2009-01-10 05:03:21 +0300620 select FSL_GTM
621 select QE_USB
622 help
623 This driver enables support for Freescale QE USB Host Controller
624 (as found on MPC8360 and MPC8323 processors), the driver supports
625 Full and Low Speed USB.
626
627config FHCI_DEBUG
628 bool "Freescale QE USB Host Controller debug support"
629 depends on USB_FHCI_HCD && DEBUG_FS
630 help
631 Say "y" to see some FHCI debug information and statistics
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300632 through debugfs.
Anton Vorontsov236dd4d2009-01-10 05:03:21 +0300633
Tony Olechd774efe2006-09-13 11:27:35 +0100634config USB_U132_HCD
635 tristate "Elan U132 Adapter Host Controller"
Florian Fainelli25e11ec2013-04-09 14:29:25 +0200636 depends on USB_FTDI_ELAN
Tony Olechd774efe2006-09-13 11:27:35 +0100637 help
638 The U132 adapter is a USB to CardBus adapter specifically designed
639 for PC cards that contain an OHCI host controller. Typical PC cards
640 are the Orange Mobile 3G Option GlobeTrotter Fusion card. The U132
641 adapter will *NOT* work with PC cards that do not contain an OHCI
642 controller.
643
Matt LaPlante3cb2fcc2006-11-30 05:22:59 +0100644 For those PC cards that contain multiple OHCI controllers only the
Tony Olechd774efe2006-09-13 11:27:35 +0100645 first one is used.
646
647 The driver consists of two modules, the "ftdi-elan" module is a
648 USB client driver that interfaces to the FTDI chip within ELAN's
649 USB-to-PCMCIA adapter, and this "u132-hcd" module is a USB host
650 controller driver that talks to the OHCI controller within the
651 CardBus cards that are inserted in the U132 adapter.
652
653 This driver has been tested with a CardBus OHCI USB adapter, and
654 worked with a USB PEN Drive inserted into the first USB port of
655 the PCCARD. A rather pointless thing to do, but useful for testing.
656
657 It is safe to say M here.
658
659 See also <http://www.elandigitalsystems.com/support/ufaq/u132linux.php>
660
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661config USB_SL811_HCD
662 tristate "SL811HS HCD support"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 help
664 The SL811HS is a single-port USB controller that supports either
665 host side or peripheral side roles. Enable this option if your
666 board has this chip, and you want to use it as a host controller.
667 If unsure, say N.
668
669 To compile this driver as a module, choose M here: the
670 module will be called sl811-hcd.
671
Mike Frysingerad7c56f2011-03-22 15:35:39 -0400672config USB_SL811_HCD_ISO
673 bool "partial ISO support"
674 depends on USB_SL811_HCD
675 help
676 The driver doesn't support iso_frame_desc (yet), but for some simple
677 devices that just queue one ISO frame per URB, then ISO transfers
678 "should" work using the normal urb status fields.
679
680 If unsure, say N.
681
David Brownellc6de2b62005-05-26 05:55:55 -0700682config USB_SL811_CS
683 tristate "CF/PCMCIA support for SL811HS HCD"
684 depends on USB_SL811_HCD && PCMCIA
David Brownellc6de2b62005-05-26 05:55:55 -0700685 help
686 Wraps a PCMCIA driver around the SL811HS HCD, supporting the RATOC
687 REX-CFU1U CF card (often used with PDAs). If unsure, say N.
688
689 To compile this driver as a module, choose M here: the
690 module will be called "sl811_cs".
691
Yoshihiro Shimoda5d304352007-05-10 13:18:19 +0900692config USB_R8A66597_HCD
M4rkusXXLfa0de2b2007-08-10 14:53:32 -0700693 tristate "R8A66597 HCD support"
Yoshihiro Shimoda5d304352007-05-10 13:18:19 +0900694 help
695 The R8A66597 is a USB 2.0 host and peripheral controller.
696
697 Enable this option if your board has this chip, and you want
698 to use it as a host controller. If unsure, say N.
699
700 To compile this driver as a module, choose M here: the
701 module will be called r8a66597-hcd.
702
Kuninori Morimoto034d7c12011-10-10 22:07:40 -0700703config USB_RENESAS_USBHS_HCD
704 tristate "Renesas USBHS HCD support"
Kuninori Morimoto034d7c12011-10-10 22:07:40 -0700705 depends on USB_RENESAS_USBHS
706 help
707 The Renesas USBHS is a USB 2.0 host and peripheral controller.
708
709 Enable this option if your board has this chip, and you want
710 to use it as a host controller. If unsure, say N.
711
712 To compile this driver as a module, choose M here: the
713 module will be called renesas-usbhs.
714
David Vrabel7e6133a2008-09-17 16:34:28 +0100715config USB_WHCI_HCD
Greg Kroah-Hartmaneb83be92012-09-14 21:15:50 -0700716 tristate "Wireless USB Host Controller Interface (WHCI) driver"
Randy Dunlap36f8ecb2012-01-27 15:47:03 -0800717 depends on PCI && USB && UWB
David Vrabel7e6133a2008-09-17 16:34:28 +0100718 select USB_WUSB
719 select UWB_WHCI
720 help
721 A driver for PCI-based Wireless USB Host Controllers that are
722 compliant with the WHCI specification.
723
724 To compile this driver a module, choose M here: the module
725 will be called "whci-hcd".
Inaky Perez-Gonzalezd09318b2008-09-17 16:34:30 +0100726
727config USB_HWA_HCD
Greg Kroah-Hartmaneb83be92012-09-14 21:15:50 -0700728 tristate "Host Wire Adapter (HWA) driver"
Thomas Pugliesecbb67192014-09-16 16:25:24 -0500729 depends on USB && UWB
Inaky Perez-Gonzalezd09318b2008-09-17 16:34:30 +0100730 select USB_WUSB
731 select UWB_HWA
732 help
733 This driver enables you to connect Wireless USB devices to
734 your system using a Host Wire Adaptor USB dongle. This is an
735 UWB Radio Controller and WUSB Host Controller connected to
736 your machine via USB (specified in WUSB1.0).
737
738 To compile this driver a module, choose M here: the module
739 will be called "hwa-hc".
Martin Fuzzey23d3e7a2009-11-21 12:14:48 +0100740
741config USB_IMX21_HCD
Sascha Hauer5de9ec42011-08-24 08:41:10 +0200742 tristate "i.MX21 HCD support"
Florian Fainelli25e11ec2013-04-09 14:29:25 +0200743 depends on ARM && ARCH_MXC
Martin Fuzzey23d3e7a2009-11-21 12:14:48 +0100744 help
745 This driver enables support for the on-chip USB host in the
Sascha Hauer5de9ec42011-08-24 08:41:10 +0200746 i.MX21 processor.
Martin Fuzzey23d3e7a2009-11-21 12:14:48 +0100747
748 To compile this driver as a module, choose M here: the
749 module will be called "imx21-hcd".
750
Hauke Mehrtens62e11d12012-03-15 23:49:57 +0100751config USB_HCD_BCMA
752 tristate "BCMA usb host driver"
Greg Kroah-Hartmaneb83be92012-09-14 21:15:50 -0700753 depends on BCMA
Hauke Mehrtens62e11d12012-03-15 23:49:57 +0100754 select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
755 select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD
756 help
Jesper Dangaard Brouer71c421d2012-06-15 12:01:33 +0200757 Enable support for the EHCI and OCHI host controller on an bcma bus.
Hauke Mehrtens62e11d12012-03-15 23:49:57 +0100758 It converts the bcma driver into two platform device drivers
759 for ehci and ohci.
760
761 If unsure, say N.
Hauke Mehrtens7043c2c2012-03-15 23:49:58 +0100762
763config USB_HCD_SSB
764 tristate "SSB usb host driver"
Greg Kroah-Hartmaneb83be92012-09-14 21:15:50 -0700765 depends on SSB
Hauke Mehrtens7043c2c2012-03-15 23:49:58 +0100766 select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
767 select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD
768 help
Jesper Dangaard Brouer71c421d2012-06-15 12:01:33 +0200769 Enable support for the EHCI and OCHI host controller on an bcma bus.
Hauke Mehrtens7043c2c2012-03-15 23:49:58 +0100770 It converts the bcma driver into two platform device drivers
771 for ehci and ohci.
772
773 If unsure, say N.
Jack Pham726a85c2013-08-13 13:40:13 -0700774
775config USB_HCD_TEST_MODE
776 bool "HCD test mode support"
777 ---help---
778 Say 'Y' to enable additional software test modes that may be
779 supported by the host controller drivers.
780
781 One such test mode is the Embedded High-speed Host Electrical Test
782 (EHSET) for EHCI host controller hardware, specifically the "Single
783 Step Set Feature" test. Typically this will be enabled for On-the-Go
784 or embedded hosts that need to undergo USB-IF compliance testing with
785 the aid of special testing hardware. In the future, this may expand
786 to include other tests that require support from a HCD driver.
787
788 This option is of interest only to developers who need to validate
789 their USB hardware designs. It is not needed for normal use. If
790 unsure, say N.