959 lines
18 KiB
Plaintext
959 lines
18 KiB
Plaintext
What: /sys/class/hwmon/hwmonX/name
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Description:
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The chip name.
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This should be a short, lowercase string, not containing
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whitespace, dashes, or the wildcard character '*'.
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This attribute represents the chip name. It is the only
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mandatory attribute.
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I2C devices get this attribute created automatically.
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RO
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What: /sys/class/hwmon/hwmonX/label
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Description:
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A descriptive label that allows to uniquely identify a
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device within the system.
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The contents of the label are free-form.
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RO
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What: /sys/class/hwmon/hwmonX/update_interval
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Description:
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The interval at which the chip will update readings.
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Unit: millisecond
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RW
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Some devices have a variable update rate or interval.
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This attribute can be used to change it to the desired value.
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What: /sys/class/hwmon/hwmonX/inY_min
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Description:
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Voltage min value.
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Unit: millivolt
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RW
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What: /sys/class/hwmon/hwmonX/inY_lcrit
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Description:
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Voltage critical min value.
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Unit: millivolt
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RW
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If voltage drops to or below this limit, the system may
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take drastic action such as power down or reset. At the very
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least, it should report a fault.
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What: /sys/class/hwmon/hwmonX/inY_max
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Description:
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Voltage max value.
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Unit: millivolt
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RW
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What: /sys/class/hwmon/hwmonX/inY_crit
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Description:
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Voltage critical max value.
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Unit: millivolt
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RW
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If voltage reaches or exceeds this limit, the system may
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take drastic action such as power down or reset. At the very
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least, it should report a fault.
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What: /sys/class/hwmon/hwmonX/inY_input
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Description:
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Voltage input value.
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Unit: millivolt
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RO
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Voltage measured on the chip pin.
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Actual voltage depends on the scaling resistors on the
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motherboard, as recommended in the chip datasheet.
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This varies by chip and by motherboard.
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Because of this variation, values are generally NOT scaled
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by the chip driver, and must be done by the application.
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However, some drivers (notably lm87 and via686a)
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do scale, because of internal resistors built into a chip.
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These drivers will output the actual voltage. Rule of
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thumb: drivers should report the voltage values at the
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"pins" of the chip.
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What: /sys/class/hwmon/hwmonX/inY_average
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Description:
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Average voltage
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Unit: millivolt
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RO
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What: /sys/class/hwmon/hwmonX/inY_lowest
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Description:
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Historical minimum voltage
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Unit: millivolt
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RO
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What: /sys/class/hwmon/hwmonX/inY_highest
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Description:
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Historical maximum voltage
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Unit: millivolt
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RO
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What: /sys/class/hwmon/hwmonX/inY_reset_history
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Description:
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Reset inX_lowest and inX_highest
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WO
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What: /sys/class/hwmon/hwmonX/in_reset_history
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Description:
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Reset inX_lowest and inX_highest for all sensors
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WO
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What: /sys/class/hwmon/hwmonX/inY_label
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Description:
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Suggested voltage channel label.
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Text string
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Should only be created if the driver has hints about what
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this voltage channel is being used for, and user-space
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doesn't. In all other cases, the label is provided by
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user-space.
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RO
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What: /sys/class/hwmon/hwmonX/inY_enable
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Description:
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Enable or disable the sensors.
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When disabled the sensor read will return -ENODATA.
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- 1: Enable
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- 0: Disable
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RW
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What: /sys/class/hwmon/hwmonX/cpuY_vid
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Description:
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CPU core reference voltage.
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Unit: millivolt
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RO
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Not always correct.
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What: /sys/class/hwmon/hwmonX/vrm
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Description:
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Voltage Regulator Module version number.
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RW (but changing it should no more be necessary)
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Originally the VRM standard version multiplied by 10, but now
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an arbitrary number, as not all standards have a version
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number.
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Affects the way the driver calculates the CPU core reference
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voltage from the vid pins.
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What: /sys/class/hwmon/hwmonX/inY_rated_min
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Description:
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Minimum rated voltage.
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Unit: millivolt
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RO
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What: /sys/class/hwmon/hwmonX/inY_rated_max
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Description:
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Maximum rated voltage.
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Unit: millivolt
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RO
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What: /sys/class/hwmon/hwmonX/fanY_min
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Description:
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Fan minimum value
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Unit: revolution/min (RPM)
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RW
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What: /sys/class/hwmon/hwmonX/fanY_max
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Description:
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Fan maximum value
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Unit: revolution/min (RPM)
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Only rarely supported by the hardware.
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RW
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What: /sys/class/hwmon/hwmonX/fanY_input
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Description:
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Fan input value.
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Unit: revolution/min (RPM)
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RO
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What: /sys/class/hwmon/hwmonX/fanY_div
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Description:
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Fan divisor.
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Integer value in powers of two (1, 2, 4, 8, 16, 32, 64, 128).
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RW
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Some chips only support values 1, 2, 4 and 8.
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Note that this is actually an internal clock divisor, which
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affects the measurable speed range, not the read value.
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What: /sys/class/hwmon/hwmonX/fanY_pulses
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Description:
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Number of tachometer pulses per fan revolution.
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Integer value, typically between 1 and 4.
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RW
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This value is a characteristic of the fan connected to the
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device's input, so it has to be set in accordance with the fan
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model.
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Should only be created if the chip has a register to configure
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the number of pulses. In the absence of such a register (and
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thus attribute) the value assumed by all devices is 2 pulses
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per fan revolution.
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What: /sys/class/hwmon/hwmonX/fanY_target
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Description:
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Desired fan speed
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Unit: revolution/min (RPM)
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RW
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Only makes sense if the chip supports closed-loop fan speed
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control based on the measured fan speed.
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What: /sys/class/hwmon/hwmonX/fanY_label
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Description:
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Suggested fan channel label.
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Text string
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Should only be created if the driver has hints about what
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this fan channel is being used for, and user-space doesn't.
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In all other cases, the label is provided by user-space.
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RO
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What: /sys/class/hwmon/hwmonX/fanY_enable
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Description:
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Enable or disable the sensors.
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When disabled the sensor read will return -ENODATA.
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- 1: Enable
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- 0: Disable
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RW
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What: /sys/class/hwmon/hwmonX/fanY_fault
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Description:
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Reports if a fan has reported failure.
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- 1: Failed
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- 0: Ok
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RO
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What: /sys/class/hwmon/hwmonX/pwmY
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Description:
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Pulse width modulation fan control.
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Integer value in the range 0 to 255
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RW
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255 is max or 100%.
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What: /sys/class/hwmon/hwmonX/pwmY_enable
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Description:
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Fan speed control method:
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- 0: no fan speed control (i.e. fan at full speed)
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- 1: manual fan speed control enabled (using `pwmY`)
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- 2+: automatic fan speed control enabled
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Check individual chip documentation files for automatic mode
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details.
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RW
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What: /sys/class/hwmon/hwmonX/pwmY_mode
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Description:
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- 0: DC mode (direct current)
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- 1: PWM mode (pulse-width modulation)
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RW
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What: /sys/class/hwmon/hwmonX/pwmY_freq
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Description:
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Base PWM frequency in Hz.
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Only possibly available when pwmN_mode is PWM, but not always
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present even then.
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RW
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What: /sys/class/hwmon/hwmonX/pwmY_auto_channels_temp
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Description:
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Select which temperature channels affect this PWM output in
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auto mode.
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Bitfield, 1 is temp1, 2 is temp2, 4 is temp3 etc...
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Which values are possible depend on the chip used.
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RW
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What: /sys/class/hwmon/hwmonX/pwmY_auto_pointZ_pwm
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What: /sys/class/hwmon/hwmonX/pwmY_auto_pointZ_temp
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What: /sys/class/hwmon/hwmonX/pwmY_auto_pointZ_temp_hyst
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Description:
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Define the PWM vs temperature curve.
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Number of trip points is chip-dependent. Use this for chips
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which associate trip points to PWM output channels.
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RW
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What: /sys/class/hwmon/hwmonX/tempY_auto_pointZ_pwm
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What: /sys/class/hwmon/hwmonX/tempY_auto_pointZ_temp
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What: /sys/class/hwmon/hwmonX/tempY_auto_pointZ_temp_hyst
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Description:
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Define the PWM vs temperature curve.
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Number of trip points is chip-dependent. Use this for chips
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which associate trip points to temperature channels.
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RW
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What: /sys/class/hwmon/hwmonX/tempY_type
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Description:
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Sensor type selection.
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Integers 1 to 6
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RW
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- 1: CPU embedded diode
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- 2: 3904 transistor
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- 3: thermal diode
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- 4: thermistor
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- 5: AMD AMDSI
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- 6: Intel PECI
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Not all types are supported by all chips
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What: /sys/class/hwmon/hwmonX/tempY_max
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Description:
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Temperature max value.
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Unit: millidegree Celsius (or millivolt, see below)
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RW
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What: /sys/class/hwmon/hwmonX/tempY_min
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Description:
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Temperature min value.
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Unit: millidegree Celsius
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RW
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What: /sys/class/hwmon/hwmonX/tempY_max_hyst
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Description:
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Temperature hysteresis value for max limit.
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Unit: millidegree Celsius
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Must be reported as an absolute temperature, NOT a delta
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from the max value.
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RW
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What: /sys/class/hwmon/hwmonX/tempY_min_hyst
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Description:
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Temperature hysteresis value for min limit.
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Unit: millidegree Celsius
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Must be reported as an absolute temperature, NOT a delta
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from the min value.
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RW
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What: /sys/class/hwmon/hwmonX/tempY_input
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Description:
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Temperature input value.
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Unit: millidegree Celsius
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RO
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What: /sys/class/hwmon/hwmonX/tempY_crit
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Description:
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Temperature critical max value, typically greater than
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corresponding temp_max values.
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Unit: millidegree Celsius
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RW
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What: /sys/class/hwmon/hwmonX/tempY_crit_alarm
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Description:
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Critical high temperature alarm flag.
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- 0: OK
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- 1: temperature has reached tempY_crit
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RW
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Contrary to regular alarm flags which clear themselves
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automatically when read, this one sticks until cleared by
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the user. This is done by writing 0 to the file. Writing
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other values is unsupported.
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What: /sys/class/hwmon/hwmonX/tempY_crit_hyst
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Description:
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Temperature hysteresis value for critical limit.
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Unit: millidegree Celsius
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Must be reported as an absolute temperature, NOT a delta
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from the critical value.
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RW
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What: /sys/class/hwmon/hwmonX/tempY_emergency
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Description:
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Temperature emergency max value, for chips supporting more than
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two upper temperature limits. Must be equal or greater than
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corresponding temp_crit values.
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Unit: millidegree Celsius
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RW
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What: /sys/class/hwmon/hwmonX/tempY_emergency_hyst
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Description:
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Temperature hysteresis value for emergency limit.
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Unit: millidegree Celsius
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Must be reported as an absolute temperature, NOT a delta
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from the emergency value.
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RW
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What: /sys/class/hwmon/hwmonX/tempY_lcrit
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Description:
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Temperature critical min value, typically lower than
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corresponding temp_min values.
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Unit: millidegree Celsius
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RW
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What: /sys/class/hwmon/hwmonX/tempY_lcrit_hyst
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Description:
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Temperature hysteresis value for critical min limit.
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Unit: millidegree Celsius
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Must be reported as an absolute temperature, NOT a delta
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from the critical min value.
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RW
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What: /sys/class/hwmon/hwmonX/tempY_offset
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Description:
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Temperature offset which is added to the temperature reading
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by the chip.
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Unit: millidegree Celsius
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Read/Write value.
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What: /sys/class/hwmon/hwmonX/tempY_label
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Description:
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Suggested temperature channel label.
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Text string
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Should only be created if the driver has hints about what
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this temperature channel is being used for, and user-space
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doesn't. In all other cases, the label is provided by
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user-space.
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RO
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What: /sys/class/hwmon/hwmonX/tempY_lowest
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Description:
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Historical minimum temperature
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Unit: millidegree Celsius
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RO
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What: /sys/class/hwmon/hwmonX/tempY_highest
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Description:
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Historical maximum temperature
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Unit: millidegree Celsius
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RO
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What: /sys/class/hwmon/hwmonX/tempY_reset_history
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Description:
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Reset temp_lowest and temp_highest
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WO
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What: /sys/class/hwmon/hwmonX/temp_reset_history
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Description:
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Reset temp_lowest and temp_highest for all sensors
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WO
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What: /sys/class/hwmon/hwmonX/tempY_enable
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Description:
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Enable or disable the sensors.
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When disabled the sensor read will return -ENODATA.
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- 1: Enable
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- 0: Disable
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RW
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What: /sys/class/hwmon/hwmonX/tempY_rated_min
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Description:
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Minimum rated temperature.
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Unit: millidegree Celsius
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RO
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What: /sys/class/hwmon/hwmonX/tempY_rated_max
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Description:
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Maximum rated temperature.
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Unit: millidegree Celsius
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RO
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What: /sys/class/hwmon/hwmonX/currY_max
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Description:
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Current max value
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Unit: milliampere
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RW
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What: /sys/class/hwmon/hwmonX/currY_min
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Description:
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Current min value.
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Unit: milliampere
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RW
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What: /sys/class/hwmon/hwmonX/currY_lcrit
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Description:
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Current critical low value
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Unit: milliampere
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RW
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What: /sys/class/hwmon/hwmonX/currY_crit
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Description:
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Current critical high value.
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Unit: milliampere
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RW
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What: /sys/class/hwmon/hwmonX/currY_input
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Description:
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Current input value
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Unit: milliampere
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RO
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What: /sys/class/hwmon/hwmonX/currY_average
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Description:
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Average current use
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Unit: milliampere
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RO
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What: /sys/class/hwmon/hwmonX/currY_lowest
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Description:
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Historical minimum current
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Unit: milliampere
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RO
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What: /sys/class/hwmon/hwmonX/currY_highest
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Description:
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Historical maximum current
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Unit: milliampere
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RO
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What: /sys/class/hwmon/hwmonX/currY_reset_history
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Description:
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Reset currX_lowest and currX_highest
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WO
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What: /sys/class/hwmon/hwmonX/curr_reset_history
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Description:
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Reset currX_lowest and currX_highest for all sensors
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WO
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What: /sys/class/hwmon/hwmonX/currY_enable
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Description:
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Enable or disable the sensors.
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|
When disabled the sensor read will return -ENODATA.
|
|
|
|
- 1: Enable
|
|
- 0: Disable
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/currY_rated_min
|
|
Description:
|
|
Minimum rated current.
|
|
|
|
Unit: milliampere
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/currY_rated_max
|
|
Description:
|
|
Maximum rated current.
|
|
|
|
Unit: milliampere
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_average
|
|
Description:
|
|
Average power use
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_average_interval
|
|
Description:
|
|
Power use averaging interval. A poll
|
|
notification is sent to this file if the
|
|
hardware changes the averaging interval.
|
|
|
|
Unit: milliseconds
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_average_interval_max
|
|
Description:
|
|
Maximum power use averaging interval
|
|
|
|
Unit: milliseconds
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_average_interval_min
|
|
Description:
|
|
Minimum power use averaging interval
|
|
|
|
Unit: milliseconds
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_average_highest
|
|
Description:
|
|
Historical average maximum power use
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_average_lowest
|
|
Description:
|
|
Historical average minimum power use
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_average_max
|
|
Description:
|
|
A poll notification is sent to
|
|
`powerY_average` when power use
|
|
rises above this value.
|
|
|
|
Unit: microWatt
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_average_min
|
|
Description:
|
|
A poll notification is sent to
|
|
`powerY_average` when power use
|
|
sinks below this value.
|
|
|
|
Unit: microWatt
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_input
|
|
Description:
|
|
Instantaneous power use
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_input_highest
|
|
Description:
|
|
Historical maximum power use
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_input_lowest
|
|
Description:
|
|
Historical minimum power use
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_reset_history
|
|
Description:
|
|
Reset input_highest, input_lowest,
|
|
average_highest and average_lowest.
|
|
|
|
WO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_accuracy
|
|
Description:
|
|
Accuracy of the power meter.
|
|
|
|
Unit: Percent
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_cap
|
|
Description:
|
|
If power use rises above this limit, the
|
|
system should take action to reduce power use.
|
|
A poll notification is sent to this file if the
|
|
cap is changed by the hardware. The `*_cap`
|
|
files only appear if the cap is known to be
|
|
enforced by hardware.
|
|
|
|
Unit: microWatt
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_cap_hyst
|
|
Description:
|
|
Margin of hysteresis built around capping and
|
|
notification.
|
|
|
|
Unit: microWatt
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_cap_max
|
|
Description:
|
|
Maximum cap that can be set.
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_cap_min
|
|
Description:
|
|
Minimum cap that can be set.
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_max
|
|
Description:
|
|
Maximum power.
|
|
|
|
Unit: microWatt
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_crit
|
|
Description:
|
|
Critical maximum power.
|
|
|
|
If power rises to or above this limit, the
|
|
system is expected take drastic action to reduce
|
|
power consumption, such as a system shutdown or
|
|
a forced powerdown of some devices.
|
|
|
|
Unit: microWatt
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_enable
|
|
Description:
|
|
Enable or disable the sensors.
|
|
|
|
When disabled the sensor read will return
|
|
-ENODATA.
|
|
|
|
- 1: Enable
|
|
- 0: Disable
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_rated_min
|
|
Description:
|
|
Minimum rated power.
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/powerY_rated_max
|
|
Description:
|
|
Maximum rated power.
|
|
|
|
Unit: microWatt
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/energyY_input
|
|
Description:
|
|
Cumulative energy use
|
|
|
|
Unit: microJoule
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/energyY_enable
|
|
Description:
|
|
Enable or disable the sensors.
|
|
|
|
When disabled the sensor read will return
|
|
-ENODATA.
|
|
|
|
- 1: Enable
|
|
- 0: Disable
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/humidityY_input
|
|
Description:
|
|
Humidity
|
|
|
|
Unit: milli-percent (per cent mille, pcm)
|
|
|
|
RO
|
|
|
|
|
|
What: /sys/class/hwmon/hwmonX/humidityY_enable
|
|
Description:
|
|
Enable or disable the sensors
|
|
|
|
When disabled the sensor read will return
|
|
-ENODATA.
|
|
|
|
- 1: Enable
|
|
- 0: Disable
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/humidityY_rated_min
|
|
Description:
|
|
Minimum rated humidity.
|
|
|
|
Unit: milli-percent (per cent mille, pcm)
|
|
|
|
RO
|
|
|
|
What: /sys/class/hwmon/hwmonX/humidityY_rated_max
|
|
Description:
|
|
Maximum rated humidity.
|
|
|
|
Unit: milli-percent (per cent mille, pcm)
|
|
|
|
RO
|
|
|
|
|
|
What: /sys/class/hwmon/hwmonX/intrusionY_alarm
|
|
Description:
|
|
Chassis intrusion detection
|
|
|
|
- 0: OK
|
|
- 1: intrusion detected
|
|
|
|
RW
|
|
|
|
Contrary to regular alarm flags which clear themselves
|
|
automatically when read, this one sticks until cleared by
|
|
the user. This is done by writing 0 to the file. Writing
|
|
other values is unsupported.
|
|
|
|
What: /sys/class/hwmon/hwmonX/intrusionY_beep
|
|
Description:
|
|
Chassis intrusion beep
|
|
|
|
- 0: disable
|
|
- 1: enable
|
|
|
|
RW
|
|
|
|
What: /sys/class/hwmon/hwmonX/device/pec
|
|
Description:
|
|
PEC support on I2C devices
|
|
|
|
- 0, off, n: disable
|
|
- 1, on, y: enable
|
|
|
|
RW
|