| This parameter allows the user to set the link (interface) power management. |
| There are 3 possible options: |
| ---------------------------------------------------------------------------- |
| min_power Tell the controller to try to make the link use the |
| least possible power when possible. This may |
| sacrifice some performance due to increased latency |
| when coming out of lower power states. |
| max_performance Generally, this means no power management. Tell |
| the controller to have performance be a priority |
| medium_power Tell the controller to enter a lower power state |
| when possible, but do not enter the lowest power |
| state, thus improving latency over min_power setting. |