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 ============= =============================================== 159