1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/regulator/maxim,max8952.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Maxim MAX8952 voltage regulator
8
9 maintainers:
10 - Krzysztof Kozlowski <krzk@kernel.org>
11
12 allOf:
13 - $ref: regulator.yaml#
14
15 properties:
16 compatible:
17 const: maxim,max8952
18
19 max8952,default-mode:
20 $ref: /schemas/types.yaml#/definitions/uint32
21 enum: [0, 1, 2, 3]
22 description: |
23 index of default DVS voltage
24
25 max8952,dvs-mode-microvolt:
26 minItems: 4
27 maxItems: 4
28 items:
29 minimum: 770000
30 maximum: 1400000
31 description: |
32 Array of 4 integer values defining DVS voltages in microvolts. All values
33 must be from range <770000, 1400000>.
34
35 max8952,en-gpio:
36 maxItems: 1
37 description: |
38 GPIO used to control enable status of regulator
39
40 max8952,ramp-speed:
41 $ref: /schemas/types.yaml#/definitions/uint32
42 enum: [0, 1, 2, 3, 4, 5, 6, 7]
43 default: 0
44 description: |
45 Voltage ramp speed, values map to:
46 - 0: 32mV/us
47 - 1: 16mV/us
48 - 2: 8mV/us
49 - 3: 4mV/us
50 - 4: 2mV/us
51 - 5: 1mV/us
52 - 6: 0.5mV/us
53 - 7: 0.25mV/us
54 Defaults to 32mV/us if not specified.
55
56 max8952,sync-freq:
57 $ref: /schemas/types.yaml#/definitions/uint32
58 enum: [0, 1, 2]
59 default: 0
60 description: |
61 Sync frequency, values map to:
62 - 0: 26 MHz
63 - 1: 13 MHz
64 - 2: 19.2 MHz
65 Defaults to 26 MHz if not specified.
66
67 max8952,vid-gpios:
68 minItems: 2
69 maxItems: 2
70 description: |
71 Array of two GPIO pins used for DVS voltage selection
72
73 reg:
74 maxItems: 1
75
76 required:
77 - compatible
78 - max8952,dvs-mode-microvolt
79 - reg
80
81 unevaluatedProperties: false
82
83 examples:
84 - |
85 #include <dt-bindings/gpio/gpio.h>
86
87 i2c {
88 #address-cells = <1>;
89 #size-cells = <0>;
90
91 pmic@60 {
92 compatible = "maxim,max8952";
93 reg = <0x60>;
94
95 max8952,vid-gpios = <&gpx0 3 GPIO_ACTIVE_HIGH>,
96 <&gpx0 4 GPIO_ACTIVE_HIGH>;
97 max8952,default-mode = <0>;
98 max8952,dvs-mode-microvolt = <1250000>, <1200000>,
99 <1050000>, <950000>;
100 max8952,sync-freq = <0>;
101 max8952,ramp-speed = <0>;
102
103 regulator-name = "VARM_1.2V_C210";
104 regulator-min-microvolt = <770000>;
105 regulator-max-microvolt = <1400000>;
106 regulator-always-on;
107 regulator-boot-on;
108 };
109 };
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