link_power_management_policy.rst 1003 Bytes
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Link Power Managent Policy
This parameter allows the user to set the link (interface) power management.
There are 3 possible options:


Value
Effect


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
over power management.

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.
Value	Effect
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 over power management.
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.