1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
What: /config/usb-gadget
Date: Jun 2013
KernelVersion: 3.11
Description:
This group contains sub-groups corresponding to created
USB gadgets.
What: /config/usb-gadget/gadget
Date: Jun 2013
KernelVersion: 3.11
Description:
The attributes of a gadget:
================ ============================================
UDC bind a gadget to UDC/unbind a gadget;
write UDC's name found in /sys/class/udc/*
to bind a gadget, empty string "" to unbind.
max_speed maximum speed the driver supports. Valid
names are super-speed-plus, super-speed,
high-speed, full-speed, and low-speed.
bDeviceClass USB device class code
bDeviceSubClass USB device subclass code
bDeviceProtocol USB device protocol code
bMaxPacketSize0 maximum endpoint 0 packet size
bcdDevice bcd device release number
bcdUSB bcd USB specification version number
idProduct product ID
idVendor vendor ID
================ ============================================
What: /config/usb-gadget/gadget/configs
Date: Jun 2013
KernelVersion: 3.11
Description:
This group contains a USB gadget's configurations
What: /config/usb-gadget/gadget/configs/config
Date: Jun 2013
KernelVersion: 3.11
Description:
The attributes of a configuration:
================ ======================================
bmAttributes configuration characteristics
MaxPower maximum power consumption from the bus
================ ======================================
What: /config/usb-gadget/gadget/configs/config/strings
Date: Jun 2013
KernelVersion: 3.11
Description:
This group contains subdirectories for language-specific
strings for this configuration.
What: /config/usb-gadget/gadget/configs/config/strings/language
Date: Jun 2013
KernelVersion: 3.11
Description:
The attributes:
================ =========================
configuration configuration description
================ =========================
What: /config/usb-gadget/gadget/functions
Date: Jun 2013
KernelVersion: 3.11
Description:
This group contains functions available to this USB gadget.
What: /config/usb-gadget/gadget/functions/<func>.<inst>/interface.<n>
Date: May 2014
KernelVersion: 3.16
Description:
This group contains "Feature Descriptors" specific for one
gadget's USB interface or one interface group described
by an IAD.
The attributes:
================= =====================================
compatible_id 8-byte string for "Compatible ID"
sub_compatible_id 8-byte string for "Sub Compatible ID"
================= =====================================
What: /config/usb-gadget/gadget/functions/<func>.<inst>/interface.<n>/<property>
Date: May 2014
KernelVersion: 3.16
Description:
This group contains "Extended Property Descriptors" specific for one
gadget's USB interface or one interface group described
by an IAD.
The attributes:
===== ===============================================
type value 1..7 for interpreting the data
- 1: unicode string
- 2: unicode string with environment variable
- 3: binary
- 4: little-endian 32-bit
- 5: big-endian 32-bit
- 6: unicode string with a symbolic link
- 7: multiple unicode strings
data blob of data to be interpreted depending on
type
===== ===============================================
What: /config/usb-gadget/gadget/strings
Date: Jun 2013
KernelVersion: 3.11
Description:
This group contains subdirectories for language-specific
strings for this gadget.
What: /config/usb-gadget/gadget/strings/language
Date: Jun 2013
KernelVersion: 3.11
Description:
The attributes:
============ =================================
serialnumber gadget's serial number (string)
product gadget's product description
manufacturer gadget's manufacturer description
============ =================================
What: /config/usb-gadget/gadget/os_desc
Date: May 2014
KernelVersion: 3.16
Description:
This group contains "OS String" extension handling attributes.
============= ===============================================
use flag turning "OS Descriptors" support on/off
b_vendor_code one-byte value used for custom per-device and
per-interface requests
qw_sign an identifier to be reported as "OS String"
proper
============= ===============================================
What: /config/usb-gadget/gadget/webusb
Date: Dec 2022
KernelVersion: 6.3
Description:
This group contains "WebUSB" extension handling attributes.
============= ===============================================
use flag turning "WebUSB" support on/off
bcdVersion bcd WebUSB specification version number
bVendorCode one-byte value used for custom per-device
landingPage UTF-8 encoded URL of the device's landing page
============= ===============================================
|
