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1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause2%YAML 1.23---4$id: http://devicetree.org/schemas/hwmon/gmt,g762.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: GMT G761/G762/G763 PWM Fan controller8 9maintainers:10 - Christian Marangi <ansuelsmth@gmail.com>11 12description: |13 GMT G761/G762/G763 PWM Fan controller.14 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 of17 the internal crystal oscillator)18 19 If an optional property is not set in DT, then current value is kept20 unmodified (e.g. bootloader installed value).21 22 Additional information on operational parameters for the device is available23 in Documentation/hwmon/g762.rst. A detailed datasheet for the device is available24 at http://natisbad.org/NAS/refs/GMT_EDS-762_763-080710-0.2.pdf.25 26properties:27 compatible:28 enum:29 - gmt,g76130 - gmt,g76231 - gmt,g76332 33 reg:34 maxItems: 135 36 clocks:37 description: a fixed clock providing input clock frequency on CLK38 pin of the chip.39 maxItems: 140 41 fan_startv:42 description: Fan startup voltage step43 $ref: /schemas/types.yaml#/definitions/uint3244 enum: [0, 1, 2, 3]45 46 pwm_polarity:47 description: PWM polarity (positive or negative duty)48 $ref: /schemas/types.yaml#/definitions/uint3249 enum: [0, 1]50 51 fan_gear_mode:52 description: FAN gear mode. Configure High speed fan setting factor53 $ref: /schemas/types.yaml#/definitions/uint3254 enum: [0, 1, 2]55 56required:57 - compatible58 - reg59 60if:61 properties:62 compatible:63 contains:64 enum:65 - gmt,g76266 - gmt,g76367then:68 required:69 - clocks70 71additionalProperties: false72 73examples:74 - |75 i2c {76 #address-cells = <1>;77 #size-cells = <0>;78 79 g762@3e {80 compatible = "gmt,g762";81 reg = <0x3e>;82 clocks = <&g762_clk>;83 fan_gear_mode = <0>;84 fan_startv = <1>;85 pwm_polarity = <0>;86 };87 88 g761@1e {89 compatible = "gmt,g761";90 reg = <0x1e>;91 fan_gear_mode = <0>;92 fan_startv = <1>;93 pwm_polarity = <0>;94 };95 };96