path: root/Documentation/hwmon/ibmaem
diff options
Diffstat (limited to 'Documentation/hwmon/ibmaem')
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/hwmon/ibmaem b/Documentation/hwmon/ibmaem
new file mode 100644
index 00000000..1e0d59e0
--- /dev/null
+++ b/Documentation/hwmon/ibmaem
@@ -0,0 +1,38 @@
+Kernel driver ibmaem
+This driver talks to the IBM Systems Director Active Energy Manager, known
+henceforth as AEM.
+Supported systems:
+ * Any recent IBM System X server with AEM support.
+ This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2,
+ x3950 M2, and certain HC10/HS2x/LS2x/QS2x blades. The IPMI host interface
+ driver ("ipmi-si") needs to be loaded for this driver to do anything.
+ Prefix: 'ibmaem'
+ Datasheet: Not available
+Author: Darrick J. Wong
+This driver implements sensor reading support for the energy and power meters
+available on various IBM System X hardware through the BMC. All sensor banks
+will be exported as platform devices; this driver can talk to both v1 and v2
+interfaces. This driver is completely separate from the older ibmpex driver.
+The v1 AEM interface has a simple set of features to monitor energy use. There
+is a register that displays an estimate of raw energy consumption since the
+last BMC reset, and a power sensor that returns average power use over a
+configurable interval.
+The v2 AEM interface is a bit more sophisticated, being able to present a wider
+range of energy and power use registers, the power cap as set by the AEM
+software, and temperature sensors.
+Special Features
+The "power_cap" value displays the current system power cap, as set by the AEM
+software. Setting the power cap from the host is not currently supported.