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authorTomas Winkler <tomas.winkler@intel.com>2014-12-19 00:44:59 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-01-09 14:53:13 -0800
commit7e4a90cb2efecb3799bde9280efbf7f4af8f891b (patch)
treeee5535a411a41b3df677f34b3d935774f662b1d5 /Documentation/ABI
parentb13a65ef190e488e2761d65bdd2e1fe8a3a125f5 (diff)
mei: add ABI documentation for fw_status exported through sysfs
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-class-mei15
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-mei b/Documentation/ABI/testing/sysfs-class-mei
index 0ec8b8178c41..80d9888a8ece 100644
--- a/Documentation/ABI/testing/sysfs-class-mei
+++ b/Documentation/ABI/testing/sysfs-class-mei
@@ -14,3 +14,18 @@ Description:
The /sys/class/mei/meiN directory is created for
each probed mei device
+What: /sys/class/mei/meiN/fw_status
+Date: Nov 2014
+KernelVersion: 3.19
+Contact: Tomas Winkler <tomas.winkler@intel.com>
+Description: Display fw status registers content
+
+ The ME FW writes its status information into fw status
+ registers for BIOS and OS to monitor fw health.
+
+ The register contains running state, power management
+ state, error codes, and others. The way the registers
+ are decoded depends on PCH or SoC generation.
+ Also number of registers varies between 1 and 6
+ depending on generation.
+

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