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 7title: Austria MicroSystems AS3711 Quad Buck High Current PMIC with Charger 8 9maintainers: 10 - Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> 11 12description: 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 17properties: 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 181required: 182 - compatible 183 - reg 184 185additionalProperties: false 186 187examples: 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 }; 224