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diff --git a/Documentation/hwmon/ibmaem.rst b/Documentation/hwmon/ibmaem.rst new file mode 100644 index 000000000..f07a14a1c --- /dev/null +++ b/Documentation/hwmon/ibmaem.rst @@ -0,0 +1,44 @@ +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 + +Description +----------- + +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. |