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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/hwmon/gmt,g762.yaml
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# SPDX-License-Identifier: GPL-2.0-only 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/gmt,g762.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: GMT G761/G762/G763 PWM Fan controller

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maintainers:

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  - Christian Marangi <ansuelsmth@gmail.com>

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description: |

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  GMT G761/G762/G763 PWM Fan controller.

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  G761 supports an internal-clock hence the clocks property is optional.

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  If not defined, internal-clock will be used. (31KHz is the clock of

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  the internal crystal oscillator)

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  If an optional property is not set in DT, then current value is kept

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  unmodified (e.g. bootloader installed value).

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  Additional information on operational parameters for the device is available

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  in Documentation/hwmon/g762.rst. A detailed datasheet for the device is available

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  at http://natisbad.org/NAS/refs/GMT_EDS-762_763-080710-0.2.pdf.

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properties:

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  compatible:

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    enum:

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      - gmt,g761

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      - gmt,g762

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      - gmt,g763

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  reg:

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    maxItems: 1

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  clocks:

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    description: a fixed clock providing input clock frequency on CLK

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      pin of the chip.

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    maxItems: 1

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  fan_startv:

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    description: Fan startup voltage step

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    $ref: /schemas/types.yaml#/definitions/uint32

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    enum: [0, 1, 2, 3]

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  pwm_polarity:

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    description: PWM polarity (positive or negative duty)

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    $ref: /schemas/types.yaml#/definitions/uint32

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    enum: [0, 1]

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  fan_gear_mode:

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    description: FAN gear mode. Configure High speed fan setting factor

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    $ref: /schemas/types.yaml#/definitions/uint32

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    enum: [0, 1, 2]

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required:

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  - compatible

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  - reg

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if:

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  properties:

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    compatible:

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      contains:

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        enum:

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          - gmt,g762

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          - gmt,g763

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then:

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  required:

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    - clocks

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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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        g762@3e {

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            compatible = "gmt,g762";

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            reg = <0x3e>;

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            clocks = <&g762_clk>;

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            fan_gear_mode = <0>;

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            fan_startv = <1>;

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            pwm_polarity = <0>;

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        };

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        g761@1e {

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            compatible = "gmt,g761";

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            reg = <0x1e>;

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            fan_gear_mode = <0>;

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            fan_startv = <1>;

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            pwm_polarity = <0>;

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        };

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    };

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