diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pcie/Kconfig | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig index b8b494b3e0d..dda70981b7a 100644 --- a/drivers/pci/pcie/Kconfig +++ b/drivers/pci/pcie/Kconfig @@ -31,14 +31,22 @@ source "drivers/pci/pcie/aer/Kconfig" # PCI Express ASPM # config PCIEASPM - bool "PCI Express ASPM support(Experimental)" - depends on PCI && EXPERIMENTAL && PCIEPORTBUS - default n + bool "PCI Express ASPM control" if EMBEDDED + depends on PCI && PCIEPORTBUS + default y help - This enables PCI Express ASPM (Active State Power Management) and - Clock Power Management. ASPM supports state L0/L0s/L1. + This enables OS control over PCI Express ASPM (Active State + Power Management) and Clock Power Management. ASPM supports + state L0/L0s/L1. - When in doubt, say N. + ASPM is initially set up the 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. config PCIEASPM_DEBUG bool "Debug PCI Express ASPM" depends on PCIEASPM |