diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2019-11-28 08:54:29 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-11-28 08:54:29 -0600 |
| commit | abd05c97f9711a4baa8cd43832893b8df45d459e (patch) | |
| tree | c2ec4d6561dcc45bd87db28ade6a212dcdc29a19 /Documentation | |
| parent | c2a3d213d1bc007683f63790b1cf522d5586d1a8 (diff) | |
| parent | 87e90283c94c76ee11d379ab5a0973382bbd0baf (diff) | |
| download | lwn-abd05c97f9711a4baa8cd43832893b8df45d459e.tar.gz lwn-abd05c97f9711a4baa8cd43832893b8df45d459e.zip | |
Merge branch 'pci/aspm'
- Remove unnecessary ASPM locking (Bjorn Helgaas)
- Add support for disabling L1 PM Substates (Heiner Kallweit)
- Allow re-enabling Clock PM after it has been disabled (Heiner Kallweit)
- Add sysfs attributes for controlling ASPM link states (Heiner Kallweit)
- Remove CONFIG_PCIEASPM_DEBUG, including "link_state" and "clk_ctl"
sysfs files (Heiner Kallweit)
* pci/aspm:
PCI/ASPM: Remove PCIEASPM_DEBUG Kconfig option and related code
PCI/ASPM: Add sysfs attributes for controlling ASPM link states
PCI/ASPM: Add pcie_aspm_get_link()
PCI/ASPM: Allow re-enabling Clock PM
PCI/ASPM: Add L1 PM substate support to pci_disable_link_state()
PCI/ASPM: Remove pcie_aspm_enabled() unnecessary locking
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci index 8bfee557e50e..450296cc7948 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci +++ b/Documentation/ABI/testing/sysfs-bus-pci @@ -347,3 +347,16 @@ Description: If the device has any Peer-to-Peer memory registered, this file contains a '1' if the memory has been published for use outside the driver that owns the device. + +What: /sys/bus/pci/devices/.../link/clkpm + /sys/bus/pci/devices/.../link/l0s_aspm + /sys/bus/pci/devices/.../link/l1_aspm + /sys/bus/pci/devices/.../link/l1_1_aspm + /sys/bus/pci/devices/.../link/l1_2_aspm + /sys/bus/pci/devices/.../link/l1_1_pcipm + /sys/bus/pci/devices/.../link/l1_2_pcipm +Date: October 2019 +Contact: Heiner Kallweit <hkallweit1@gmail.com> +Description: If ASPM is supported for an endpoint, these files can be + used to disable or enable the individual power management + states. Write y/1/on to enable, n/0/off to disable. |