1 Link Layer Validation Device is a standard dev 1 Link Layer Validation Device is a standard device for testing of Super
2 Speed Link Layer tests. These nodes are availa 2 Speed Link Layer tests. These nodes are available in sysfs only when lvs
3 driver is bound with root hub device. 3 driver is bound with root hub device.
4 4
5 What: /sys/bus/usb/devices/.../get_d 5 What: /sys/bus/usb/devices/.../get_dev_desc
6 Date: March 2014 6 Date: March 2014
7 Contact: Pratyush Anand <pratyush.anand@ 7 Contact: Pratyush Anand <pratyush.anand@gmail.com>
8 Description: 8 Description:
9 Write to this node to issue "G 9 Write to this node to issue "Get Device Descriptor"
10 for Link Layer Validation devi 10 for Link Layer Validation device. It is needed for TD.7.06.
11 11
12 What: /sys/bus/usb/devices/.../u1_ti 12 What: /sys/bus/usb/devices/.../u1_timeout
13 Date: March 2014 13 Date: March 2014
14 Contact: Pratyush Anand <pratyush.anand@ 14 Contact: Pratyush Anand <pratyush.anand@gmail.com>
15 Description: 15 Description:
16 Set "U1 timeout" for the downs 16 Set "U1 timeout" for the downstream port where Link Layer
17 Validation device is connected 17 Validation device is connected. Timeout value must be between 0
18 and 127. It is needed for TD.7 18 and 127. It is needed for TD.7.18, TD.7.19, TD.7.20 and TD.7.21.
19 19
20 What: /sys/bus/usb/devices/.../u2_ti 20 What: /sys/bus/usb/devices/.../u2_timeout
21 Date: March 2014 21 Date: March 2014
22 Contact: Pratyush Anand <pratyush.anand@ 22 Contact: Pratyush Anand <pratyush.anand@gmail.com>
23 Description: 23 Description:
24 Set "U2 timeout" for the downs 24 Set "U2 timeout" for the downstream port where Link Layer
25 Validation device is connected 25 Validation device is connected. Timeout value must be between 0
26 and 127. It is needed for TD.7 26 and 127. It is needed for TD.7.18, TD.7.19, TD.7.20 and TD.7.21.
27 27
28 What: /sys/bus/usb/devices/.../hot_r 28 What: /sys/bus/usb/devices/.../hot_reset
29 Date: March 2014 29 Date: March 2014
30 Contact: Pratyush Anand <pratyush.anand@ 30 Contact: Pratyush Anand <pratyush.anand@gmail.com>
31 Description: 31 Description:
32 Write to this node to issue "R 32 Write to this node to issue "Reset" for Link Layer Validation
33 device. It is needed for TD.7. 33 device. It is needed for TD.7.29, TD.7.31, TD.7.34 and TD.7.35.
34 34
35 What: /sys/bus/usb/devices/.../u3_en 35 What: /sys/bus/usb/devices/.../u3_entry
36 Date: March 2014 36 Date: March 2014
37 Contact: Pratyush Anand <pratyush.anand@ 37 Contact: Pratyush Anand <pratyush.anand@gmail.com>
38 Description: 38 Description:
39 Write to this node to issue "U 39 Write to this node to issue "U3 entry" for Link Layer
40 Validation device. It is neede 40 Validation device. It is needed for TD.7.35 and TD.7.36.
41 41
42 What: /sys/bus/usb/devices/.../u3_ex 42 What: /sys/bus/usb/devices/.../u3_exit
43 Date: March 2014 43 Date: March 2014
44 Contact: Pratyush Anand <pratyush.anand@ 44 Contact: Pratyush Anand <pratyush.anand@gmail.com>
45 Description: 45 Description:
46 Write to this node to issue "U 46 Write to this node to issue "U3 exit" for Link Layer
47 Validation device. It is neede 47 Validation device. It is needed for TD.7.36.
48 48
49 What: /sys/bus/usb/devices/.../enabl 49 What: /sys/bus/usb/devices/.../enable_compliance
50 Date: July 2017 50 Date: July 2017
51 Description: 51 Description:
52 Write to this node to set the 52 Write to this node to set the port to compliance mode to test
53 with Link Layer Validation dev 53 with Link Layer Validation device. It is needed for TD.7.34.
54 54
55 What: /sys/bus/usb/devices/.../warm_ 55 What: /sys/bus/usb/devices/.../warm_reset
56 Date: July 2017 56 Date: July 2017
57 Description: 57 Description:
58 Write to this node to issue "W 58 Write to this node to issue "Warm Reset" for Link Layer Validation
59 device. It may be needed to pr 59 device. It may be needed to properly reset an xHCI 1.1 host port if
60 compliance mode needed to be e 60 compliance mode needed to be explicitly enabled.
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