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/openbmc/linux/Documentation/hwmon/
H A Dw83781d.rst189 One user has reported problems with fans stopping
198 - One user reports fans stopping under high server load.
352 - 3 fans, identical to the W83781D
355 - 2 fans only, 1350000/RPM/div
441 One remarkable thing is that the fans would only have two or three
446 fans run at low speed, and 0x7F or 0x80 to make them run at full speed.
458 - seems to turn fans off after some time(1-2 minutes)... might be
465 - slightly "on-ner" than off, but my fans do not get to move. I can
H A Dsch5627.rst21 capabilities. They can monitor up to 5 voltages, 4 fans and 8 temperatures.
H A Ddell-smm-hwmon.rst15 queried for the status of fans and temperature sensors. Userspace
26 Temperature sensors and fans can be queried and set via the standard
65 ``pwm1_enable`` sets automatic control for all fans.
95 The driver also exports the fans as thermal cooling devices with
315 fans supports a 4th "magic" state, which signals the BIOS that automatic
H A Dsch5636.rst27 The Fujitsu Theseus can monitor up to 5 voltages, 8 fans and 16
H A Dftsteutates.rst22 8 fans. It also contains an integrated watchdog which is currently
H A Duserspace-tools.rst8 voltages, fans speed). They are often connected through an I2C bus, but some
H A Dadt7475.rst144 `pwm[1-*]_stall_disable sysfs attribute`. A value of 0 means the fans will shut
145 off. A value of 1 means the fans will run at auto_point1_pwm.
H A Dmax31785.rst41 second rotor of fans 1-4
H A Dvt1211.rst51 temp2), 1 dedicated voltage (in5) and 2 fans. Additionally, the chip
59 tested very well (due to the fact that my EPIA M10000 doesn't have the fans
176 fans. Writing a 2 to any of the two pwm[1-2]_enable sysfs nodes will put the
H A Dnct6775.rst126 is lower than optimal. Some fans might not be present because they share pins
151 * 0 Fan control disabled (fans set to maximum speed)
254 critical temperature mode, in which the fans should run at full speed.
H A Dasb100.rst30 these, the ASB100-A also implements a single PWM controller for fans 2 and
/openbmc/phosphor-pid-control/examples/
H A DREADME3 This program is only meant to control fans given thermal sensor readings.
17 The only requirement for a sensor is that it isn't writeonly. Only fans are
/openbmc/phosphor-fan-presence/docs/monitor/
H A Dset_func_on_present.md26 "fans": [
/openbmc/phosphor-fan-presence/docs/control/
H A Devents.md53 one or more fans is missing. The basic behavior with this config is:
390 Sets the fans to a configured floor when a number of members within the group
411 Sets the fans to a configured target when a number of members within the group
520 Sets the fans to a configured target when any service owner associated to the
541 This action locks fans at configured targets when the configured `count` amount
542 of fans meet criterion for the particular condition. A locked fan maintains its
552 "fans": [ "fan0", "fan1", "fan2", "fan3" ],
557 The above config will lock all fans in the fans array at a target of 10000 when
H A Dzones.md3 Zones are groups of fans that are set to the same values and have the same
/openbmc/phosphor-pid-control/
H A Dconfigure.md21 This build flag is used to set the fans strictly at the failsafe percent when in
28 This build flag is used to set the fans to failsafe percent when offline. The
187 and `minThermalOutput`; the result is used to control fans.
194 The `fan` PID is meant to drive fans or other cooling devices. It's expecting to
195 get the setpoint value from the owning zone and then drive the fans to that
229 | `samplePeriod` | `double` | How frequently the value is sampled. 0.1 for fans, 1.0 for temp…
/openbmc/phosphor-fan-presence/docs/presence/
H A Deeprom.md5 Some fans have EEPROMs on them. In these cases, the `eeprom` JSON stanza can be
/openbmc/phosphor-state-manager/target_files/
H A Dmeson.build13 'obmc-fans-ready.target',
/openbmc/openbmc/
H A DREADME.md167 also the fans connected to it and the chassis that the board and fans are housed
170 system and get some basic functionality, rough edges (such as your cooling fans
/openbmc/linux/Documentation/ABI/testing/
H A Dsysfs-driver-samsung-laptop9 their fans quiet at all costs. Reading from this file
/openbmc/linux/drivers/thermal/intel/int340x_thermal/
H A DKconfig28 turning on the fans.
/openbmc/openbmc/meta-phosphor/recipes-phosphor/fans/
H A Dphosphor-pid-control_git.bb3 # your system relies on passive dbus for fans or other
/openbmc/openbmc/meta-ibm/recipes-phosphor/dbus/fan-policy/swift/
H A Dfan-errors.yaml11 # * Watch for fans to become both present and functional, and then resolve
238 'If the chassis has power, check all fans.'
243 callback: check fans
353 - name: check fans
355 'Verify each of the 3 fans are present.'
/openbmc/docs/development/
H A Dadd-new-system.md379 Hwmon sensors include sensors on board (e.g. temperature sensors, fans) and OCC
405 - [pwm-tacho-controller@1e786000.conf][10] defines the fans and the config is
562 Taking Romulus as an example, it is air-cooled and has 3 fans without GPIO
567 Romulus has no GPIO detection for fans, so it checks fan tach sensor:
586 Romulus fans use pwm to control the fan speed, where pwm ranges from 0 to 255,
636 It defines that the zone full speed and default floor speed for the fans, so
637 the fan pwm will be set to 255 if it is in full speed, and set to 195 if fans
639 - `fan-config` defines which fans are controlled in which zone and which target
689 **Note**: Romulus fans are simple. For a more complicated example, refer to
832 https://github.com/openbmc/openbmc/tree/master/meta-ibm/meta-witherspoon/recipes-phosphor/fans
/openbmc/openbmc/meta-ibm/recipes-phosphor/dbus/fan-policy/witherspoon/
H A Dfan-errors.yaml12 # * Watch for fans to become both present and functional, and then resolve
239 'If the chassis has power, check all fans.'
244 callback: check fans
354 - name: check fans
356 'Verify each of the 3 fans are present.'

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