Searched refs:tachometer (Results 1 – 24 of 24) sorted by relevance
| /Linux-v4.19/Documentation/hwmon/ |
| D | max31790 | 24 Tachometer inputs monitor fan tachometer logic outputs for precise (+/-1%)
26 Six pins are dedicated tachometer inputs. Any of the six PWM outputs can
27 also be configured to serve as tachometer inputs.
33 fan[1-12]_input RO fan tachometer speed in RPM
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| D | nct7904 | 19 interface, up to 12 fan tachometer inputs, up to 4 fan control channels
30 fan[1-12]_input Fan tachometer measurements (rpm)
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| D | max6639 | 40 fan1_input R TACH1 fan tachometer input (in RPM)
41 fan2_input R TACH2 fan tachometer input (in RPM)
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| D | max31785 | 18 dual tachometer measurements, and fan health monitoring.
20 For dual-rotor configurations the MAX31785A exposes the second rotor tachometer
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| D | aspeed-pwm-tacho | 14 controller supports up to 16 tachometer inputs.
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| D | npcm750-pwm-fan | 14 controller supports up to 16 tachometer inputs.
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| D | lm63 | 40 The datasheet isn't very clear about what the tachometer reading is.
48 The fan speed is measured using a tachometer. Contrary to most chips which
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| D | lm93 | 56 tachometer inputs to measure fan speed. Limit and status registers for all
59 (i.e. smart tachometer mode). It also adds measurement and control support
119 If a fan is driven using a low-side drive PWM, the tachometer
120 output of the fan is corrupted. The LM93 includes smart tachometer
121 circuitry that allows an accurate tachometer reading to be
126 the fan tachometer with a pwm) to the sysfs file fan<n>_smart_tach. A zero
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| D | asc7621 | 68 The tachometer measurement system is flexible and able to adapt to many
96 The aSC7621 has tachometer inputs to measure fan speed on up to four fans.
113 tachometer inputs
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| D | mlxreg-fan | 36 a PWM output and tachometer inputs.
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| D | max6650 | 31 fan1_input ro fan tachometer speed in RPM
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| D | amc6821 | 41 fan1_input ro tachometer speed
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| D | it87 | 148 IT8783E/F, and late IT8712F and IT8705F also have optional 16-bit tachometer
150 not compatible with the older chips and revisions. The 16-bit tachometer mode
177 16-bit tachometer counters aren't used, fan readings can be divided by
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| D | w83793 | 36 This driver exports 10 voltage sensors, up to 12 fan tachometer inputs,
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| D | dme1737 | 140 to the number of pulses per fan revolution that the connected tachometer
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| D | sysfs-interface | 221 fan[1-*]_pulses Number of tachometer pulses per fan revolution.
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| /Linux-v4.19/drivers/watchdog/ |
| D | wdt.c | 87 static int tachometer; variable
88 module_param(tachometer, int, 0);
89 MODULE_PARM_DESC(tachometer,
227 if (tachometer) { in wdt_get_status()
288 if (tachometer) { in wdt_interrupt()
375 if (tachometer) in wdt_ioctl()
646 tachometer ? "Enabled" : "Disabled"); in wdt_init()
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| D | wdt_pci.c | 88 static int tachometer; variable
89 module_param(tachometer, int, 0);
90 MODULE_PARM_DESC(tachometer,
263 if (tachometer) { in wdtpci_get_status()
324 if (tachometer) { in wdtpci_interrupt()
412 if (tachometer) in wdtpci_ioctl()
686 tachometer ? "Enabled" : "Disabled"); in wdtpci_init_one()
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| D | Kconfig | 1938 can do this via the tachometer parameter. Only do this if you have a
1939 fan tachometer actually set up.
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| /Linux-v4.19/Documentation/watchdog/ |
| D | wdt.txt | 7 ICS WDT501-P (no fan tachometer)
31 tachometer WDT501-P Fan Tachometer support (0=disable, default=0)
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| /Linux-v4.19/Documentation/devicetree/bindings/hwmon/ |
| D | max31785.txt | 11 dual tachometer measurements, and fan health monitoring.
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| D | aspeed-pwm-tacho.txt | 4 controller can support upto 16 Fan tachometer inputs.
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| D | npcm750-pwm-fan.txt | 4 controller outputs and 16 Fan tachometer controller inputs.
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| /Linux-v4.19/Documentation/laptops/ |
| D | thinkpad-acpi.txt | 1175 maximum speed, and in some ThinkPads, the tachometer readings go stale
1282 Fan tachometer reading, in RPM. May go stale on certain
1288 Fan tachometer reading, in RPM, for the secondary fan.
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