Default SATA Link Power Management policy
configname: CONFIG_SATA_MOBILE_LPM_POLICY
Linux Kernel Configuration
└─>Device Drivers
└─>Serial ATA and Parallel ATA drivers (libata)
└─>Default SATA Link Power Management policy
In linux kernel since version 3.10 (release Date: 2013-06-30)
Select the Default SATA Link Power Management (LPM) policy to use
for chipsets / "South Bridges" supporting low-power modes. Such
chipsets are ubiquitous across laptops, desktops and servers.
The value set has the following meanings:
0 => Keep firmware settings
1 => Maximum performance
2 => Medium power
3 => Medium power with Device Initiated PM enabled
4 => Minimum power
Note "Minimum power" is known to cause issues, including disk
corruption, with some disks and should not be used.
for chipsets / "South Bridges" supporting low-power modes. Such
chipsets are ubiquitous across laptops, desktops and servers.
The value set has the following meanings:
0 => Keep firmware settings
1 => Maximum performance
2 => Medium power
3 => Medium power with Device Initiated PM enabled
4 => Minimum power
Note "Minimum power" is known to cause issues, including disk
corruption, with some disks and should not be used.