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105 lines
2.9 KiB
105 lines
2.9 KiB
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/hwmon/adt7475.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: ADT7475 hwmon sensor |
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maintainers: |
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- Jean Delvare <[email protected]> |
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description: | |
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The ADT7473, ADT7475, ADT7476, and ADT7490 are thermal monitors and multiple |
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PWN fan controllers. |
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They support monitoring and controlling up to four fans (the ADT7490 can only |
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control up to three). They support reading a single on chip temperature |
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sensor and two off chip temperature sensors (the ADT7490 additionally |
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supports measuring up to three current external temperature sensors with |
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series resistance cancellation (SRC)). |
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Datasheets: |
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https://www.onsemi.com/pub/Collateral/ADT7473-D.PDF |
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https://www.onsemi.com/pub/Collateral/ADT7475-D.PDF |
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https://www.onsemi.com/pub/Collateral/ADT7476-D.PDF |
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https://www.onsemi.com/pub/Collateral/ADT7490-D.PDF |
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Description taken from onsemiconductors specification sheets, with minor |
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rephrasing. |
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properties: |
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compatible: |
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enum: |
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- adi,adt7473 |
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- adi,adt7475 |
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- adi,adt7476 |
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- adi,adt7490 |
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reg: |
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maxItems: 1 |
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adi,pwm-active-state: |
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description: | |
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Integer array, represents the active state of the pwm outputs If set to 0 |
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the pwm uses a logic low output for 100% duty cycle. If set to 1 the pwm |
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uses a logic high output for 100% duty cycle. |
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$ref: /schemas/types.yaml#/definitions/uint32-array |
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minItems: 3 |
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maxItems: 3 |
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items: |
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enum: [0, 1] |
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default: 1 |
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patternProperties: |
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"^adi,bypass-attenuator-in[0-4]$": |
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description: | |
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Configures bypassing the individual voltage input attenuator. If |
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set to 1 the attenuator is bypassed if set to 0 the attenuator is |
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not bypassed. If the property is absent then the attenuator |
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retains its configuration from the bios/bootloader. |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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enum: [0, 1] |
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"adi,pin(5|10)-function": |
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description: | |
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Configures the function for pin 5 on the adi,adt7473 and adi,adt7475. Or |
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pin 10 on the adi,adt7476 and adi,adt7490. |
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$ref: /schemas/types.yaml#/definitions/string |
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enum: |
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- pwm2 |
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- smbalert# |
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"adi,pin(9|14)-function": |
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description: | |
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Configures the function for pin 9 on the adi,adt7473 and adi,adt7475. Or |
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pin 14 on the adi,adt7476 and adi,adt7490 |
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$ref: /schemas/types.yaml#/definitions/string |
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enum: |
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- tach4 |
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- therm# |
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- smbalert# |
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- gpio |
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required: |
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- compatible |
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- reg |
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additionalProperties: false |
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examples: |
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- | |
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i2c { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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hwmon@2e { |
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compatible = "adi,adt7476"; |
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reg = <0x2e>; |
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adi,bypass-attenuator-in0 = <1>; |
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adi,bypass-attenuator-in1 = <0>; |
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adi,pwm-active-state = <1 0 1>; |
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adi,pin10-function = "smbalert#"; |
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adi,pin14-function = "tach4"; |
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}; |
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};
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