| Link Layer Validation Device is a standard device for testing of Super |
| Speed Link Layer tests. These nodes are available in sysfs only when lvs |
| driver is bound with root hub device. |
| |
| What: /sys/bus/usb/devices/.../get_dev_desc |
| Date: March 2014 |
| Contact: Pratyush Anand <pratyush.anand@gmail.com> |
| Description: |
| Write to this node to issue "Get Device Descriptor" |
| for Link Layer Validation device. It is needed for TD.7.06. |
| |
| What: /sys/bus/usb/devices/.../u1_timeout |
| Date: March 2014 |
| Contact: Pratyush Anand <pratyush.anand@gmail.com> |
| Description: |
| Set "U1 timeout" for the downstream port where Link Layer |
| Validation device is connected. Timeout value must be between 0 |
| and 127. It is needed for TD.7.18, TD.7.19, TD.7.20 and TD.7.21. |
| |
| What: /sys/bus/usb/devices/.../u2_timeout |
| Date: March 2014 |
| Contact: Pratyush Anand <pratyush.anand@gmail.com> |
| Description: |
| Set "U2 timeout" for the downstream port where Link Layer |
| Validation device is connected. Timeout value must be between 0 |
| and 127. It is needed for TD.7.18, TD.7.19, TD.7.20 and TD.7.21. |
| |
| What: /sys/bus/usb/devices/.../hot_reset |
| Date: March 2014 |
| Contact: Pratyush Anand <pratyush.anand@gmail.com> |
| Description: |
| Write to this node to issue "Reset" for Link Layer Validation |
| device. It is needed for TD.7.29, TD.7.31, TD.7.34 and TD.7.35. |
| |
| What: /sys/bus/usb/devices/.../u3_entry |
| Date: March 2014 |
| Contact: Pratyush Anand <pratyush.anand@gmail.com> |
| Description: |
| Write to this node to issue "U3 entry" for Link Layer |
| Validation device. It is needed for TD.7.35 and TD.7.36. |
| |
| What: /sys/bus/usb/devices/.../u3_exit |
| Date: March 2014 |
| Contact: Pratyush Anand <pratyush.anand@gmail.com> |
| Description: |
| Write to this node to issue "U3 exit" for Link Layer |
| Validation device. It is needed for TD.7.36. |
