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:

• prompt: PCI Express ASPM control
• type: bool
• depends on: CONFIG_EXPERT
• defined in drivers/pci/pcie/Kconfig
• found in Linux kernels: 2.6.36–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12

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:

• prompt: PCI Express ASPM support(Experimental)
• type: bool
• depends on: CONFIG_PCI && CONFIG_EXPERIMENTAL && CONFIG_PCIEPORTBUS
• defined in drivers/pci/pcie/Kconfig
• found in Linux kernels: 2.6.26–2.6.35

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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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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