PCI: document the pcie_aspm kernel parameter

It can be handy so make sure people know about it.

Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 08fbc8372ba4..53ba7c7d82b3 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1678,6 +1678,12 @@ and is between 256 and 4096 characters. It is defined in the file
                                 reserved for the CardBus bridge's memory
                                 window. The default value is 64 megabytes.
 
+        pcie_aspm=      [PCIE] Forcibly enable or disable PCIe Active State Power
+                        Management.
+                off     Disable ASPM.
+                force   Enable ASPM even on devices that claim not to support it.
+                        WARNING: Forcing ASPM on may cause system lockups.
+
         pcmv=           [HW,PCMCIA] BadgePAD 4
 
         pd.             [PARIDE]