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CONFIG_PCIEASPM: PCI Express ASPM control

General informations

The Linux kernel configuration item CONFIG_PCIEASPM has multiple definitions:

PCI Express ASPM control found in drivers/pci/pcie/Kconfig

The configuration item CONFIG_PCIEASPM:

Help text

This enables OS control over PCI Express ASPM (Active State Power Management) and Clock Power Management. ASPM supports state L0/L0s/L1.

ASPM is initially set up by the firmware. With this option enabled, Linux can modify this state in order to disable ASPM on known-bad hardware or configurations and enable it when known-safe.

ASPM can be disabled or enabled at runtime via /sys/module/pcie_aspm/parameters/policy

When in doubt, say Y.

PCI Express ASPM support(Experimental) found in drivers/pci/pcie/Kconfig

The configuration item CONFIG_PCIEASPM:

Help text

This enables PCI Express ASPM (Active State Power Management) and Clock Power Management. ASPM supports state L0/L0s/L1.

When in doubt, say N.

Hardware

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