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41 lines
1.3 KiB
41 lines
1.3 KiB
Kernel Driver IBMPOWERNV |
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Supported systems: |
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* Any recent IBM P servers based on POWERNV platform |
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Author: Neelesh Gupta |
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Description |
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----------- |
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This driver implements reading the platform sensors data like temperature/fan/ |
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voltage/power for 'POWERNV' platform. |
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The driver uses the platform device infrastructure. It probes the device tree |
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for sensor devices during the __init phase and registers them with the 'hwmon'. |
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'hwmon' populates the 'sysfs' tree having attribute files, each for a given |
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sensor type and its attribute data. |
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All the nodes in the DT appear under "/ibm,opal/sensors" and each valid node in |
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the DT maps to an attribute file in 'sysfs'. The node exports unique 'sensor-id' |
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which the driver uses to make an OPAL call to the firmware. |
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Usage notes |
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----------- |
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The driver is built statically with the kernel by enabling the config |
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CONFIG_SENSORS_IBMPOWERNV. It can also be built as module 'ibmpowernv'. |
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Sysfs attributes |
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---------------- |
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fanX_input Measured RPM value. |
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fanX_min Threshold RPM for alert generation. |
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fanX_fault 0: No fail condition |
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1: Failing fan |
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tempX_input Measured ambient temperature. |
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tempX_max Threshold ambient temperature for alert generation. |
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inX_input Measured power supply voltage |
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inX_fault 0: No fail condition. |
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1: Failing power supply. |
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power1_input System power consumption (microWatt)
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