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/Documentation/devicetree/bindings/hwmon/
Dnpcm750-pwm-fan.txt1 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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Daspeed-pwm-tacho.txt1 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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Dhpe,gxp-fan-ctrl.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/hwmon/hpe,gxp-fan-ctrl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: HPE GXP Fan Controller
10 - Nick Hawkins <nick.hawkins@hpe.com>
13 The HPE GXP fan controller controls the fans through an external CPLD
18 const: hpe,gxp-fan-ctrl
22 - description: Fan controller PWM
23 - description: Programmable logic
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Daspeed,g6-pwm-tach.yaml1 # 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>
14 The ASPEED PWM controller can support up to 16 PWM outputs.
15 The ASPEED Fan Tacho controller can support up to 16 fan tach input.
22 - aspeed,ast2600-pwm-tach
33 "#pwm-cells":
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Dmaxim,max31790.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: The Maxim MAX31790 Fan Controller
10 - Guenter Roeck <linux@roeck-us.net>
11 - Chanh Nguyen <chanh@os.amperecomputing.com>
15 independent PWM outputs. The desired fan speeds (or PWM duty cycles)
34 "#pwm-cells":
38 "^fan-[0-9]+$":
39 $ref: fan-common.yaml#
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Dmaxim,max6639.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Naresh Solanki <naresh.solanki@9elements.com>
14 The MAX6639 is a 2-channel temperature monitor with dual, automatic, PWM
15 fan-speed controller. It monitors its own temperature and one external
16 diode-connected transistor or the temperatures of two external diode-connected
20 https://datasheets.maximintegrated.com/en/ds/MAX6639-MAX6639F.pdf
25 - maxim,max6639
30 '#address-cells':
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Dmaxim,max6650.yaml1 # 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
29 maxim,fan-microvolt:
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Dpwm-fan.yaml1 # 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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Dadi,max31760.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices MAX31760 Fan-Speed Controller
10 - Ibrahim Tilki <Ibrahim.Tilki@analog.com>
13 Analog Devices MAX31760 Fan-Speed Controller
19 - adi,max31760
27 - compatible
28 - reg
33 - |
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Dmax31785.txt1 Bindings for the Maxim MAX31785 Intelligent Fan Controller
8 The Maxim MAX31785 is a PMBus device providing closed-loop, multi-channel fan
9 management with temperature and remote voltage sensing. Various fan control
11 dual tachometer measurements, and fan health monitoring.
14 - compatible : One of "maxim,max31785" or "maxim,max31785a"
15 - reg : I2C address, one of 0x52, 0x53, 0x54, 0x55.
Dgmt,g762.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GMT G761/G762/G763 PWM Fan controller
10 - Christian Marangi <ansuelsmth@gmail.com>
13 GMT G761/G762/G763 PWM Fan controller.
15 G761 supports an internal-clock hence the clocks property is optional.
16 If not defined, internal-clock will be used. (31KHz is the clock of
24 at http://natisbad.org/NAS/refs/GMT_EDS-762_763-080710-0.2.pdf.
29 - gmt,g761
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Dmicrochip,lan966x.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Walle <michael@walle.cc>
13 Microchip LAN966x temperature monitor and fan controller
18 - microchip,lan9668-hwmon
22 - description: PVT registers
23 - description: FAN registers
25 reg-names:
27 - const: pvt
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/Documentation/hwmon/
Dasus_rog_ryujin.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
13 -----------
16 all-in-one CPU liquid coolers. Available sensors are pump, internal and external
17 (controller) fan speed in RPM, their duties in PWM, as well as coolant temperature.
19 Attaching external fans to the controller is optional and allows them to be
20 controlled from the device. If not connected, the fan-related sensors will
21 report zeroes. The controller is a separate hardware unit that comes bundled
22 with the AIO and connects to it to allow fan control.
28 -----------
34 -------------
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Daquacomputer_d5next.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 Kernel driver aquacomputer-d5next
8 * Aquacomputer Aquaero 5/6 fan controllers
10 * Aquacomputer Farbwerk RGB controller
11 * Aquacomputer Farbwerk 360 RGB controller
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
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Dnpcm750-pwm-fan.rst1 Kernel driver npcm750-pwm-fan
13 ------------
14 This driver implements support for NUVOTON NPCM7XX PWM and Fan Tacho
15 controller. The PWM controller supports up to 8 PWM outputs. The Fan tacho
16 controller supports up to 16 tachometer inputs.
21 fanX_input ro provide current fan rotation value in RPM as reported
22 by the fan to the device.
24 pwmX rw get or set PWM fan control value. This is an integer
Dmax6620.rst1 .. 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
34 fan[1-4]_alarm ro Fan alarm.
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Dg760a.rst6 * 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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Daspeed-pwm-tacho.rst1 Kernel driver aspeed-pwm-tacho
11 ------------
12 This driver implements support for ASPEED AST2400/2500 PWM and Fan Tacho
13 controller. The PWM controller supports up to 8 PWM outputs. The Fan tacho
14 controller supports up to 16 tachometer inputs.
19 fanX_input ro provide current fan rotation value in RPM as reported
20 by the fan to the device.
22 pwmX rw get or set PWM fan control value. This is an integer
Dg762.rst4 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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Dlan966x.rst1 .. SPDX-License-Identifier: GPL-2.0
3 Kernel driver lan966x-hwmon
10 Prefix: 'lan9668-hwmon'
12 Datasheet: https://microchip-ung.github.io/lan9668_reginfo
19 -----------
21 This driver implements support for the Microchip LAN9668 on-chip
22 temperature sensor as well as its fan controller. It provides one
23 temperature sensor and one fan controller. The temperature range
24 of the sensor is specified from -40 to +125 degrees Celsius and
25 its accuracy is +/- 5 degrees Celsius. The fan controller has a
[all …]
Daspeed-g6-pwm-tach.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 Kernel driver aspeed-g6-pwm-tach
13 ------------
14 This driver implements support for ASPEED AST2600 Fan Tacho controller.
15 The controller supports up to 16 tachometer inputs.
20 fanX_input ro provide current fan rotation value in RPM as reported
21 by the fan to the device.
22 fanX_div rw Fan divisor: Supported value are power of 4 (1, 4, 16
25 affected by fan signal glitch.
Demc2305.rst1 .. SPDX-License-Identifier: GPL-2.0
12 https://www.microchip.com/en-us/product/EMC2305
15 ------------
16 This driver implements support for Microchip EMC2301/2/3/5 RPM-based PWM Fan Controller.
17 The EMC2305 Fan Controller supports up to 5 independently controlled PWM fan drives.
18 Fan rotation speeds are reported in RPM.
19 The driver supports the RPM-based PWM control to keep a fan at the desired speed.
26 fan[1-5]_fault RO files for tachometers TACH1-TACH5 fault indication
27 fan[1-5]_input RO files for tachometers TACH1-TACH5 input (in RPM)
28 pwm[1-5] RW file for fan[1-5] target duty cycle (0..255)
Dnzxt-smart2.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 Kernel driver nzxt-smart2
8 - NZXT RGB & Fan controller
9 - NZXT Smart Device v2
12 -----------
16 is reported for every fan.
25 -----------
43 -------------
46 fan[1-3]_input Fan speed monitoring (in rpm).
47 curr[1-3]_input Current supplied to the fan (in milliamperes).
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Dadm1026.rst16 - Philip Pokorny <ppokorny@penguincomputing.com> for Penguin Computing
17 - Justin Thiessen <jthiessen@penguincomputing.com>
20 -----------------
23 List of GPIO pins (0-16) to program as inputs
26 List of GPIO pins (0-16) to program as outputs
29 List of GPIO pins (0-16) to program as inverted
32 List of GPIO pins (0-16) to program as normal/non-inverted
35 List of GPIO pins (0-7) to program as fan tachs
39 -----------
42 Devices calls it a "complete thermal system management controller."
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/Documentation/devicetree/bindings/mfd/
Dgateworks-gsc.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mfd/gateworks-gsc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Gateworks System Controller
10 The Gateworks System Controller (GSC) is a device present across various
14 - Watchdog Timer
15 - GPIO
16 - Pushbutton controller
17 - Hardware monitor with ADC's for temperature and voltage rails and
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