1 files changed, 11 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 4c44d01c67f4..f5fce483930c 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1127,6 +1127,17 @@ and is between 256 and 4096 characters. It is defined in the file
                         use the HighMem zone if it exists, and the Normal
                         zone if it does not.
 
+        kgdbdbgp=       [KGDB,HW] kgdb over EHCI usb debug port.
+                        Format: <Controller#>[,poll interval]
+                        The controller # is the number of the ehci usb debug
+                        port as it is probed via PCI.  The poll interval is
+                        optional and is the number seconds in between
+                        each poll cycle to the debug port in case you need
+                        the functionality for interrupting the kernel with
+                        gdb or control-c on the dbgp connection.  When
+                        not using this parameter you use sysrq-g to break into
+                        the kernel debugger.
+
         kgdboc=         [KGDB,HW] kgdb over consoles.
                         Requires a tty driver that supports console polling,
                         or a supported polling keyboard driver (non-usb).