1 # SPDX-License-Identifier: GPL-2.0-only OR BSD 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/hwmon/gmt,g 4 $id: http://devicetree.org/schemas/hwmon/gmt,g762.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: GMT G761/G762/G763 PWM Fan controller 7 title: GMT G761/G762/G763 PWM Fan controller
8 8
9 maintainers: 9 maintainers:
10 - Christian Marangi <ansuelsmth@gmail.com> 10 - Christian Marangi <ansuelsmth@gmail.com>
11 11
12 description: | 12 description: |
13 GMT G761/G762/G763 PWM Fan controller. 13 GMT G761/G762/G763 PWM Fan controller.
14 14
15 G761 supports an internal-clock hence the cl 15 G761 supports an internal-clock hence the clocks property is optional.
16 If not defined, internal-clock will be used. 16 If not defined, internal-clock will be used. (31KHz is the clock of
17 the internal crystal oscillator) 17 the internal crystal oscillator)
18 18
19 If an optional property is not set in DT, th 19 If an optional property is not set in DT, then current value is kept
20 unmodified (e.g. bootloader installed value) 20 unmodified (e.g. bootloader installed value).
21 21
22 Additional information on operational parame 22 Additional information on operational parameters for the device is available
23 in Documentation/hwmon/g762.rst. A detailed 23 in Documentation/hwmon/g762.rst. A detailed datasheet for the device is available
24 at http://natisbad.org/NAS/refs/GMT_EDS-762_ 24 at http://natisbad.org/NAS/refs/GMT_EDS-762_763-080710-0.2.pdf.
25 25
26 properties: 26 properties:
27 compatible: 27 compatible:
28 enum: 28 enum:
29 - gmt,g761 29 - gmt,g761
30 - gmt,g762 30 - gmt,g762
31 - gmt,g763 31 - gmt,g763
32 32
33 reg: 33 reg:
34 maxItems: 1 34 maxItems: 1
35 35
36 clocks: 36 clocks:
37 description: a fixed clock providing input 37 description: a fixed clock providing input clock frequency on CLK
38 pin of the chip. 38 pin of the chip.
39 maxItems: 1 39 maxItems: 1
40 40
41 fan_startv: 41 fan_startv:
42 description: Fan startup voltage step 42 description: Fan startup voltage step
43 $ref: /schemas/types.yaml#/definitions/uin 43 $ref: /schemas/types.yaml#/definitions/uint32
44 enum: [0, 1, 2, 3] 44 enum: [0, 1, 2, 3]
45 45
46 pwm_polarity: 46 pwm_polarity:
47 description: PWM polarity (positive or neg 47 description: PWM polarity (positive or negative duty)
48 $ref: /schemas/types.yaml#/definitions/uin 48 $ref: /schemas/types.yaml#/definitions/uint32
49 enum: [0, 1] 49 enum: [0, 1]
50 50
51 fan_gear_mode: 51 fan_gear_mode:
52 description: FAN gear mode. Configure High 52 description: FAN gear mode. Configure High speed fan setting factor
53 $ref: /schemas/types.yaml#/definitions/uin 53 $ref: /schemas/types.yaml#/definitions/uint32
54 enum: [0, 1, 2] 54 enum: [0, 1, 2]
55 55
56 required: 56 required:
57 - compatible 57 - compatible
58 - reg 58 - reg
59 59
60 if: 60 if:
61 properties: 61 properties:
62 compatible: 62 compatible:
63 contains: 63 contains:
64 enum: 64 enum:
65 - gmt,g762 65 - gmt,g762
66 - gmt,g763 66 - gmt,g763
67 then: 67 then:
68 required: 68 required:
69 - clocks 69 - clocks
70 70
71 additionalProperties: false 71 additionalProperties: false
72 72
73 examples: 73 examples:
74 - | 74 - |
75 i2c { 75 i2c {
76 #address-cells = <1>; 76 #address-cells = <1>;
77 #size-cells = <0>; 77 #size-cells = <0>;
78 78
79 g762@3e { 79 g762@3e {
80 compatible = "gmt,g762"; 80 compatible = "gmt,g762";
81 reg = <0x3e>; 81 reg = <0x3e>;
82 clocks = <&g762_clk>; 82 clocks = <&g762_clk>;
83 fan_gear_mode = <0>; 83 fan_gear_mode = <0>;
84 fan_startv = <1>; 84 fan_startv = <1>;
85 pwm_polarity = <0>; 85 pwm_polarity = <0>;
86 }; 86 };
87 87
88 g761@1e { 88 g761@1e {
89 compatible = "gmt,g761"; 89 compatible = "gmt,g761";
90 reg = <0x1e>; 90 reg = <0x1e>;
91 fan_gear_mode = <0>; 91 fan_gear_mode = <0>;
92 fan_startv = <1>; 92 fan_startv = <1>;
93 pwm_polarity = <0>; 93 pwm_polarity = <0>;
94 }; 94 };
95 }; 95 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.