1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/mfd/ams,as3711.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Austria MicroSystems AS3711 Quad Buck High Current PMIC with Charger
8
9 maintainers:
10 - Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
11
12 description:
13 AS3711 is an I2C PMIC from Austria MicroSystems with multiple DC/DC and LDO
14 power supplies, a battery charger and an RTC. So far only bindings for the
15 two step-up DC/DC converters are defined.
16
17 properties:
18 compatible:
19 const: ams,as3711
20
21 reg:
22 maxItems: 1
23
24 backlight:
25 description:
26 Step-up converter configuration, to be used as a backlight source
27 type: object
28 additionalProperties: false
29 properties:
30 compatible:
31 const: ams,as3711-bl
32
33 su1-dev:
34 description: Framebuffer phandle for the first step-up converter
35 $ref: /schemas/types.yaml#/definitions/phandle
36
37 su1-max-uA:
38 description: Maximum current for the first step-up converter
39 $ref: /schemas/types.yaml#/definitions/uint32
40
41 su2-dev:
42 description: Framebuffer phandle for the second step-up converter
43 $ref: /schemas/types.yaml#/definitions/phandle
44
45 su2-max-uA:
46 description: Maximum current for the second step-up converter
47 $ref: /schemas/types.yaml#/definitions/uint32
48
49 su2-feedback-voltage:
50 description: Second step-up converter uses voltage feedback
51 type: boolean
52
53 su2-feedback-curr1:
54 description:
55 Second step-up converter uses CURR1 input for current feedback
56 type: boolean
57
58 su2-feedback-curr2:
59 description:
60 Second step-up converter uses CURR2 input for current feedback
61 type: boolean
62
63 su2-feedback-curr3:
64 description:
65 Second step-up converter uses CURR3 input for current feedback
66 type: boolean
67
68 su2-feedback-curr-auto:
69 description:
70 Second step-up converter uses automatic current feedback selection
71 type: boolean
72
73 su2-fbprot-lx-sd4:
74 description:
75 Second step-up converter uses LX_SD4 for over-voltage protection
76 type: boolean
77
78 su2-fbprot-gpio2:
79 description:
80 Second step-up converter uses GPIO2 for over-voltage protection
81 type: boolean
82
83 su2-fbprot-gpio3:
84 description:
85 Second step-up converter uses GPIO3 for over-voltage protection
86 type: boolean
87
88 su2-fbprot-gpio4:
89 description:
90 Second step-up converter uses GPIO4 for over-voltage protection
91 type: boolean
92
93 su2-auto-curr1:
94 description:
95 Second step-up converter uses CURR1 input for automatic current
96 feedback
97 type: boolean
98
99 su2-auto-curr2:
100 description:
101 Second step-up converter uses CURR2 input for automatic current
102 feedback
103 type: boolean
104
105 su2-auto-curr3:
106 description:
107 Second step-up converter uses CURR3 input for automatic current
108 feedback
109 type: boolean
110
111 required:
112 - compatible
113
114 dependentRequired:
115 # To use the SU1 converter as a backlight source the following two
116 # properties must be provided:
117 su1-dev: [ su1-max-uA ]
118 su1-max-uA: [ su1-dev ]
119
120 # To use the SU2 converter as a backlight source the following two
121 # properties must be provided:
122 su2-dev: [ su2-max-uA ]
123 su2-max-uA: [ su2-dev ]
124
125 su2-feedback-voltage: [ su2-dev ]
126 su2-feedback-curr1: [ su2-dev ]
127 su2-feedback-curr2: [ su2-dev ]
128 su2-feedback-curr3: [ su2-dev ]
129 su2-feedback-curr-auto: [ su2-dev ]
130 su2-fbprot-lx-sd4: [ su2-dev ]
131 su2-fbprot-gpio2: [ su2-dev ]
132 su2-fbprot-gpio3: [ su2-dev ]
133 su2-fbprot-gpio4: [ su2-dev ]
134 su2-auto-curr1: [ su2-feedback-curr-auto ]
135 su2-auto-curr2: [ su2-feedback-curr-auto ]
136 su2-auto-curr3: [ su2-feedback-curr-auto ]
137
138 dependentSchemas:
139 su2-dev:
140 allOf:
141 - oneOf:
142 - required:
143 - su2-feedback-voltage
144 - required:
145 - su2-feedback-curr1
146 - required:
147 - su2-feedback-curr2
148 - required:
149 - su2-feedback-curr3
150 - required:
151 - su2-feedback-curr-auto
152 - oneOf:
153 - required:
154 - su2-fbprot-lx-sd4
155 - required:
156 - su2-fbprot-gpio2
157 - required:
158 - su2-fbprot-gpio3
159 - required:
160 - su2-fbprot-gpio4
161
162 su2-feedback-curr-auto:
163 anyOf:
164 - required:
165 - su2-auto-curr1
166 - required:
167 - su2-auto-curr2
168 - required:
169 - su2-auto-curr3
170
171 regulators:
172 description: Other DC/DC and LDO supplies
173 type: object
174 unevaluatedProperties: false
175 patternProperties:
176 "^(sd[1-4]|ldo[1-8])$":
177 type: object
178 $ref: /schemas/regulator/regulator.yaml#
179 unevaluatedProperties: false
180
181 required:
182 - compatible
183 - reg
184
185 additionalProperties: false
186
187 examples:
188 - |
189 i2c {
190 #address-cells = <1>;
191 #size-cells = <0>;
192
193 pmic@40 {
194 compatible = "ams,as3711";
195 reg = <0x40>;
196
197 regulators {
198 sd4 {
199 regulator-name = "1.215V";
200 regulator-min-microvolt = <1215000>;
201 regulator-max-microvolt = <1235000>;
202 };
203 ldo2 {
204 regulator-name = "2.8V CPU";
205 regulator-min-microvolt = <2800000>;
206 regulator-max-microvolt = <2800000>;
207 regulator-always-on;
208 regulator-boot-on;
209 };
210 };
211
212 backlight {
213 compatible = "ams,as3711-bl";
214 su2-dev = <&lcdc>;
215 su2-max-uA = <36000>;
216 su2-feedback-curr-auto;
217 su2-fbprot-gpio4;
218 su2-auto-curr1;
219 su2-auto-curr2;
220 su2-auto-curr3;
221 };
222 };
223 };
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