Searched +full:fan +full:- +full:1 (Results 1 – 25 of 158) sorted by relevance
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| /Documentation/hwmon/ |
| D | g762.rst | 4 The GMT G762 Fan Speed PWM Controller is connected directly to a fan
5 and performs closed-loop or open-loop control of the fan speed. Two
6 modes - PWM or DC - are supported by the device.
9 http://natisbad.org/NAS/ref/GMT_EDS-762_763-080710-0.2.pdf. sysfs
10 bindings are described in Documentation/hwmon/sysfs-interface.rst.
19 fan revolution, ...); Those can be modified via devicetree bindings
25 set desired fan speed. This only makes sense in closed-loop
26 fan speed control (i.e. when pwm1_enable is set to 2).
29 provide current fan rotation value in RPM as reported by
30 the fan to the device.
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| D | nct6775.rst | 19 * Nuvoton NCT5572D/NCT6771F/NCT6772F/NCT6775F/W83677HG-I
83 * Nuvoton NCT6796D-S/NCT6799D-R
93 Guenter Roeck <linux@roeck-us.net>
96 -----------
106 There are 4 to 5 fan rotation speed sensors, 8 to 15 analog voltage sensors,
108 fan regulation strategies (plus manual fan control mode).
114 either 1 degC or 0.5 degC, depending on the temperature source and
119 Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
121 NCT6775F, fan readings can be divided by a programmable divider (1, 2, 4, 8,
123 do not have a fan speed divider. The driver sets the most suitable fan divisor
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| D | w83792d.rst | 10 Addresses scanned: I2C 0x2c - 0x2f
19 -----------------
22 (default 1)
35 -----------
42 parameter; this will put it into a more well-behaved state first.
44 The driver implements three temperature sensors, seven fan rotation speed
45 sensors, nine voltage sensors, and two automatic fan regulation
46 strategies called: Smart Fan I (Thermal Cruise mode) and Smart Fan II.
48 The driver also implements up to seven fan control outputs: pwm1-7. Pwm1-7
53 Automatic fan control mode is possible only for fan1-fan3.
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| D | max31785.rst | 10 Addresses scanned: -
17 -----------
19 The Maxim MAX31785 is a PMBus device providing closed-loop, multi-channel fan
20 management with temperature and remote voltage sensing. Various fan control
22 dual tachometer measurements, and fan health monitoring.
24 For dual-rotor configurations the MAX31785A exposes the second rotor tachometer
25 readings in attributes fan[5-8]_input. By contrast the MAX31785 only exposes
26 the slowest rotor measurement, and does so in the fan[1-4]_input attributes.
29 -----------
35 ----------------
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| D | dell-smm-hwmon.rst | 1 .. SPDX-License-Identifier: GPL-2.0-or-later
5 Kernel driver dell-smm-hwmon
8 :Copyright: |copy| 2002-2005 Massimo Dal Zotto <dz@debian.org>
12 -----------
18 automatically adjust fan speed (please notice that it currently uses
24 -------------------
35 fan[1-4]_input RO Fan speed in RPM.
36 fan[1-4]_label RO Fan label.
37 fan[1-4]_min RO Minimal Fan speed in RPM
38 fan[1-4]_max RO Maximal Fan speed in RPM
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| D | max31790.rst | 10 Addresses scanned: -
18 -----------
23 PWM outputs. The desired fan speeds (or PWM duty cycles) are written
24 through the I2C interface. The outputs drive "4-wire" fans directly,
25 or can be used to modulate the fan's power terminals using an external
28 Tachometer inputs monitor fan tachometer logic outputs for precise (+/-1%)
29 monitoring and control of fan RPM as well as detection of fan failure.
35 -------------
38 fan[1-12]_input RO fan tachometer speed in RPM
39 fan[1-12]_fault RO fan experienced fault
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| D | max31760.rst | 1 .. SPDX-License-Identifier: GPL-2.0-or-later
19 -----------
21 The MAX31760 integrates temperature sensing along with precision PWM fan
23 temperature of a discrete diode-connected transistor, such as a 2N3906,
27 I2C-compatible interface. Fan speed is controlled based on the temperature
28 reading as an index to a 48-byte lookup table (LUT) containing
29 user-programmed PWM values. The flexible LUT-based architecture enables
30 the user to program a smooth nonlinear fan speed vs. temperature transfer
31 function to minimize acoustic fan noise. Two tachometer inputs allow
35 remote high-temperature threshold has been exceeded.
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| D | max6620.rst | 1 .. SPDX-License-Identifier: GPL-2.0-or-later
14 Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/max6620.pdf
17 - L\. Grunenberg <contact@lgrunenberg.de>
18 - Cumulus Networks <support@cumulusnetworks.com>
19 - Shuotian Cheng <shuche@microsoft.com>
20 - Arun Saravanan Balachandran <Arun_Saravanan_Balac@dell.com>
23 -----------
25 This driver implements support for Maxim MAX6620 fan controller.
27 The driver configures the fan controller in RPM mode. To give the readings more
29 (1, 2, 4, 8, 16 or 32). Set higher values for larger speeds.
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| D | g760a.rst | 6 * Global Mixed-mode Technology Inc. G760A
12 http://www.gmt.com.tw/product/datasheet/EDS-760A.pdf
17 -----------
19 The GMT G760A Fan Speed PWM Controller is connected directly to a fan
20 and performs closed-loop control of the fan speed.
22 The fan speed is programmed by setting the period via 'pwm1' of two
26 Setting a period of 0 stops the fan; setting the period to 255 sets
27 fan to maximum speed.
29 The measured fan rotation speed returned via 'fan1_input' is derived
31 source and a 2 pulse-per-revolution fan.
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| D | f71882fg.rst | 103 This is the 64-pin variant of the F71889FG, they have the
119 -----------
125 These chips also have fan controlling features, using either DC or PWM, in
133 ----------
135 The Voltage, Fan and Temperature Monitoring uses the standard sysfs
136 interface as documented in sysfs-interface, without any exceptions.
139 Fan Control
140 -----------
142 Both PWM (pulse-width modulation) and DC fan speed control methods are
149 vica versa. So the temperature zone trip points 1-4 (or 1-2) go from high temp
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| D | gxp-fan-ctrl.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
3 Kernel driver gxp-fan-ctrl
14 -----------
16 gxp-fan-ctrl is a driver which provides fan control for the hpe gxp soc.
17 The driver allows the gathering of fan status and the use of fan
22 ----------------
25 pwm[0-7] Fan 0 to 7 respective PWM value (0-255)
26 fan[0-7]_fault Fan 0 to 7 respective fault status: 1 fail, 0 ok
27 fan[0-7]_enable Fan 0 to 7 respective enabled status: 1 enabled, 0 disabled
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| D | w83627ehf.rst | 22 * Winbond W83627DHG-P
46 * Winbond W83667HG-B
54 * Nuvoton NCT6775F/W83667HG-I
73 - Jean Delvare <jdelvare@suse.de>
74 - Yuan Mu (Winbond)
75 - Rudolf Marek <r.marek@assembler.cz>
76 - David Hubbard <david.c.hubbard@gmail.com>
77 - Gong Jun <JGong@nuvoton.com>
80 -----------
83 W83627DHG, W83627DHG-P, W83627UHG, W83667HG, W83667HG-B, W83667HG-I
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| D | aquacomputer_d5next.rst | 1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 Kernel driver aquacomputer-d5next
8 * Aquacomputer Aquaero 5/6 fan controllers
12 * Aquacomputer Octo fan controller
13 * Aquacomputer Quadro fan controller
18 * Aquacomputer Poweradjust 3 fan controller
25 -----------
32 speed (in RPM), power, voltage and current. Temperature offsets and fan speeds
35 For the D5 Next pump, available sensors are pump and fan speed, power, voltage
37 available through debugfs are the serial number, firmware version and power-on
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| D | adm1026.rst | 16 - Philip Pokorny <ppokorny@penguincomputing.com> for Penguin Computing
17 - Justin Thiessen <jthiessen@penguincomputing.com>
20 -----------------
22 * gpio_input: int array (min = 1, max = 17)
23 List of GPIO pins (0-16) to program as inputs
25 * gpio_output: int array (min = 1, max = 17)
26 List of GPIO pins (0-16) to program as outputs
28 * gpio_inverted: int array (min = 1, max = 17)
29 List of GPIO pins (0-16) to program as inverted
31 * gpio_normal: int array (min = 1, max = 17)
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| D | w83l786ng.rst | 10 Addresses scanned: I2C 0x2e - 0x2f
12 Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L786NRNG09.pdf
18 -----------------
23 Use 'reset=1' to reset the chip (via index 0x40, bit 7). The default
28 -----------
32 The driver implements two temperature sensors, two fan rotation speed
35 Temperatures are measured in degrees Celsius and measurement resolution is 1
38 Fan rotation speeds are reported in RPM (rotations per minute). Fan readings
39 can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64
40 or 128 for fan 1/2) to give the readings more range or accuracy.
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| /Documentation/devicetree/bindings/hwmon/ |
| D | npcm750-pwm-fan.txt | 1 Nuvoton NPCM PWM and Fan Tacho controller device
3 The Nuvoton BMC NPCM7XX supports 8 Pulse-width modulation (PWM)
4 controller outputs and 16 Fan tachometer controller inputs.
6 The Nuvoton BMC NPCM8XX supports 12 Pulse-width modulation (PWM)
7 controller outputs and 16 Fan tachometer controller inputs.
9 Required properties for pwm-fan node
10 - #address-cells : should be 1.
11 - #size-cells : should be 0.
12 - compatible : "nuvoton,npcm750-pwm-fan" for Poleg NPCM7XX.
13 : "nuvoton,npcm845-pwm-fan" for Arbel NPCM8XX.
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| D | aspeed-pwm-tacho.txt | 1 ASPEED AST2400/AST2500 PWM and Fan Tacho controller device driver
3 The ASPEED PWM controller can support upto 8 PWM outputs. The ASPEED Fan Tacho
4 controller can support upto 16 Fan tachometer inputs.
6 There can be upto 8 fans supported. Each fan can have one PWM output and
7 one/two Fan tach inputs.
9 Required properties for pwm-tacho node:
10 - #address-cells : should be 1.
12 - #size-cells : should be 1.
14 - #cooling-cells: should be 2.
16 - reg : address and length of the register set for the device.
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| D | pwm-fan.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/hwmon/pwm-fan.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Fan connected to PWM lines
10 - Jean Delvare <jdelvare@suse.com>
11 - Guenter Roeck <linux@roeck-us.net>
15 const: pwm-fan
17 cooling-levels:
19 $ref: /schemas/types.yaml#/definitions/uint32-array
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| D | gpio-fan.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/hwmon/gpio-fan.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Fan connected to GPIO lines
10 - Rob Herring <robh@kernel.org>
14 const: gpio-fan
19 ordered MSB-->LSB.
20 minItems: 1
23 alarm-gpios:
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| D | maxim,max6650.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Maxim MAX6650 and MAX6651 I2C Fan Controllers
11 - Javier Carrasco <javier.carrasco.cruz@gmail.com>
15 of 5VDC/12VDC burshless fans with built-in tachometers.
18 https://datasheets.maximintegrated.com/en/ds/MAX6650-MAX6651.pdf
23 - maxim,max6650
24 - maxim,max6651
27 maxItems: 1
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| D | fan-common.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/hwmon/fan-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Common Fan Properties
10 - Naresh Solanki <naresh.solanki@9elements.com>
11 - Billy Tsai <billy_tsai@aspeedtech.com>
14 max-rpm:
16 Max RPM supported by fan.
20 min-rpm:
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| D | maxim,max31790.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: The Maxim MAX31790 Fan Controller
10 - Guenter Roeck <linux@roeck-us.net>
11 - Chanh Nguyen <chanh@os.amperecomputing.com>
15 independent PWM outputs. The desired fan speeds (or PWM duty cycles)
26 maxItems: 1
29 maxItems: 1
32 maxItems: 1
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| D | adi,axi-fan-control.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/hwmon/adi,axi-fan-control.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Analog Devices AXI FAN Control
11 - Nuno Sá <nuno.sa@analog.com>
14 Bindings for the Analog Devices AXI FAN Control driver. Specifications of the
22 - adi,axi-fan-control-1.00.a
25 maxItems: 1
28 maxItems: 1
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| D | aspeed,g6-pwm-tach.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/hwmon/aspeed,g6-pwm-tach.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: ASPEED G6 PWM and Fan Tach controller
11 - Billy Tsai <billy_tsai@aspeedtech.com>
15 The ASPEED Fan Tacho controller can support up to 16 fan tach input.
22 - aspeed,ast2600-pwm-tach
25 maxItems: 1
28 maxItems: 1
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| /Documentation/admin-guide/acpi/ |
| D | fan_performance_states.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 ACPI Fan Performance States
8 fan (for example, PNP0C0B or INT3404), the ACPI fan driver creates additional
10 These attributes list properties of fan performance states.
19 $ ls -l /sys/bus/acpi/devices/INT3404:00/
22 -r--r--r-- 1 root root 4096 Dec 13 20:38 state0
23 -r--r--r-- 1 root root 4096 Dec 13 20:38 state1
24 -r--r--r-- 1 root root 4096 Dec 13 20:38 state10
25 -r--r--r-- 1 root root 4096 Dec 13 20:38 state11
26 -r--r--r-- 1 root root 4096 Dec 13 20:38 state2
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