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authorTomas Winkler <tomas.winkler@intel.com>2016-01-08 01:49:22 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-02-07 09:11:06 +0300
commit222818c3d84c1f3190767f5f09f2b9b9a0e0ca7f (patch)
tree71812f9021fe350bbec52494a07306410a96e8a2 /Documentation/misc-devices
parentfdd9b8655933c3eb3154fe1ed351c17b654258bd (diff)
downloadlinux-222818c3d84c1f3190767f5f09f2b9b9a0e0ca7f.tar.xz
watchdog: mei_wdt: implement MEI iAMT watchdog driver
Create a driver with the generic watchdog interface for the MEI iAMT watchdog device. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/misc-devices')
-rw-r--r--Documentation/misc-devices/mei/mei.txt12
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/misc-devices/mei/mei.txt b/Documentation/misc-devices/mei/mei.txt
index 91c1fa34f48b..2b80a0cd621f 100644
--- a/Documentation/misc-devices/mei/mei.txt
+++ b/Documentation/misc-devices/mei/mei.txt
@@ -231,15 +231,15 @@ IT knows when a platform crashes even when there is a hard failure on the host.
The Intel AMT Watchdog is composed of two parts:
1) Firmware feature - receives the heartbeats
and sends an event when the heartbeats stop.
- 2) Intel MEI driver - connects to the watchdog feature, configures the
- watchdog and sends the heartbeats.
+ 2) Intel MEI iAMT watchdog driver - connects to the watchdog feature,
+ configures the watchdog and sends the heartbeats.
-The Intel MEI driver uses the kernel watchdog API to configure the Intel AMT
-Watchdog and to send heartbeats to it. The default timeout of the
+The Intel iAMT watchdog MEI driver uses the kernel watchdog API to configure
+the Intel AMT Watchdog and to send heartbeats to it. The default timeout of the
watchdog is 120 seconds.
-If the Intel AMT Watchdog feature does not exist (i.e. the connection failed),
-the Intel MEI driver will disable the sending of heartbeats.
+If the Intel AMT is not enabled in the firmware then the watchdog client won't enumerate
+on the me client bus and watchdog devices won't be exposed.
Supported Chipsets