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diff --git a/Documentation/scsi/link_power_management_policy.txt b/Documentation/scsi/link_power_management_policy.txt
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+This parameter allows the user to set the link (interface) power management.
+There are 4 possible options:
+
+Value			Effect
+----------------------------------------------------------------------------
+firmware_defaults	Inherit configuration from the state programmed by
+			the firmware during system init.
+
+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.
+
+