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