1 Kernel Driver IBMPOWERNV
2 ========================
5 * Any recent IBM P servers based on POWERNV platform
12 This driver implements reading the platform sensors data like temperature/fan/
13 voltage/power for 'POWERNV' platform.
15 The driver uses the platform device infrastructure. It probes the device tree
16 for sensor devices during the __init phase and registers them with the 'hwmon'.
17 'hwmon' populates the 'sysfs' tree having attribute files, each for a given
18 sensor type and its attribute data.
20 All the nodes in the DT appear under "/ibm,opal/sensors" and each valid node in
21 the DT maps to an attribute file in 'sysfs'. The node exports unique 'sensor-id'
22 which the driver uses to make an OPAL call to the firmware.
26 The driver is built statically with the kernel by enabling the config
27 CONFIG_SENSORS_IBMPOWERNV. It can also be built as module 'ibmpowernv'.
32 fanX_input Measured RPM value.
33 fanX_min Threshold RPM for alert generation.
34 fanX_fault 0: No fail condition
36 tempX_input Measured ambient temperature.
37 tempX_max Threshold ambient temperature for alert generation.
38 inX_input Measured power supply voltage
39 inX_fault 0: No fail condition.
40 1: Failing power supply.
41 power1_input System power consumption (microWatt)