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CONFIG_SATA_MOBILE_LPM_POLICY: Default SATA Link Power Management policy for low power chipsets

General informations

The Linux kernel configuration item CONFIG_SATA_MOBILE_LPM_POLICY has multiple definitions:

Default SATA Link Power Management policy for low power chipsets found in drivers/ata/Kconfig

The configuration item CONFIG_SATA_MOBILE_LPM_POLICY:

Help text

Select the Default SATA Link Power Management (LPM) policy to use for chipsets / "South Bridges" supporting low-power modes. Such chipsets are typically found on most laptops but desktops and servers now also widely use chipsets supporting low power modes.

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.

Default SATA Link Power Management policy for mobile chipsets found in drivers/ata/Kconfig

The configuration item CONFIG_SATA_MOBILE_LPM_POLICY:

Help text

Select the Default SATA Link Power Management (LPM) policy to use for mobile / laptop variants of chipsets / "South Bridges".

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.

Hardware

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