1#
2# USB Core configuration
3#
4config USB_ANNOUNCE_NEW_DEVICES
5	bool "USB announce new devices"
6	help
7	  Say Y here if you want the USB core to always announce the
8	  idVendor, idProduct, Manufacturer, Product, and SerialNumber
9	  strings for every new USB device to the syslog.  This option is
10	  usually used by distro vendors to help with debugging and to
11	  let users know what specific device was added to the machine
12	  in what location.
13
14	  If you do not want this kind of information sent to the system
15	  log, or have any doubts about this, say N here.
16
17comment "Miscellaneous USB options"
18
19config USB_DEFAULT_PERSIST
20	bool "Enable USB persist by default"
21	default y
22	help
23	  Say N here if you don't want USB power session persistence
24	  enabled by default.  If you say N it will make suspended USB
25	  devices that lose power get reenumerated as if they had been
26	  unplugged, causing any mounted filesystems to be lost.  The
27	  persist feature can still be enabled for individual devices
28	  through the power/persist sysfs node. See
29	  Documentation/usb/persist.txt for more info.
30
31	  If you have any questions about this, say Y here, only say N
32	  if you know exactly what you are doing.
33
34config USB_DYNAMIC_MINORS
35	bool "Dynamic USB minor allocation"
36	help
37	  If you say Y here, the USB subsystem will use dynamic minor
38	  allocation for any device that uses the USB major number.
39	  This means that you can have more than 16 of a single type
40	  of device (like USB printers).
41
42	  If you are unsure about this, say N here.
43
44config USB_OTG
45	bool "OTG support"
46	depends on PM
47	default n
48	help
49	  The most notable feature of USB OTG is support for a
50	  "Dual-Role" device, which can act as either a device
51	  or a host. The initial role is decided by the type of
52	  plug inserted and can be changed later when two dual
53	  role devices talk to each other.
54
55	  Select this only if your board has Mini-AB/Micro-AB
56	  connector.
57
58config USB_OTG_WHITELIST
59	bool "Rely on OTG and EH Targeted Peripherals List"
60	depends on USB
61	help
62	  If you say Y here, the "otg_whitelist.h" file will be used as a
63	  product whitelist, so USB peripherals not listed there will be
64	  rejected during enumeration.  This behavior is required by the
65	  USB OTG and EH specification for all devices not on your product's
66	  "Targeted Peripherals List".  "Embedded Hosts" are likewise
67	  allowed to support only a limited number of peripherals.
68
69config USB_OTG_BLACKLIST_HUB
70	bool "Disable external hubs"
71	depends on USB_OTG || EXPERT
72	help
73	  If you say Y here, then Linux will refuse to enumerate
74	  external hubs.  OTG hosts are allowed to reduce hardware
75	  and software costs by not supporting external hubs.  So
76	  are "Embedded Hosts" that don't offer OTG support.
77
78config USB_OTG_FSM
79	tristate "USB 2.0 OTG FSM implementation"
80	depends on USB
81	select USB_OTG
82	select USB_PHY
83	help
84	  Implements OTG Finite State Machine as specified in On-The-Go
85	  and Embedded Host Supplement to the USB Revision 2.0 Specification.
86
87