106 lines
2.9 KiB
YAML
106 lines
2.9 KiB
YAML
# 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 <jdelvare@suse.com>
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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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