| # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/regulator/lltc,ltc3676.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Linear Technology LTC3676 8-output regulators |
| |
| maintainers: |
| - Tim Harvey <tharvey@gateworks.com> |
| |
| description: | |
| LTC3676 contains eight regulators, 4 switching SW1..SW4 and four LDO1..4 . |
| |
| properties: |
| compatible: |
| const: lltc,ltc3676 |
| |
| reg: |
| maxItems: 1 |
| |
| interrupts: |
| maxItems: 1 |
| |
| regulators: |
| type: object |
| additionalProperties: false |
| description: | |
| List of regulators provided by this controller, must be named |
| after their hardware counterparts (SW|LDO)[1-4]. |
| |
| patternProperties: |
| "^(sw[1-4]|ldo[24])$": |
| type: object |
| unevaluatedProperties: false |
| $ref: regulator.yaml# |
| description: |
| Properties for single SW or LDO regulator. Regulators SW1..SW4 can |
| regulate the feedback reference from 412.5mV to 800mV in 12.5 mV |
| steps. The output voltage thus ranges between 0.4125 * (1 + R1/R2) V |
| and 0.8 * (1 + R1/R2) V. |
| Regulators LDO1, LDO2, LDO4 have a fixed 0.725 V reference and thus |
| output 0.725 * (1 + R1/R2) V. |
| The LDO1 standby regulator can not be disabled and thus should have |
| the regulator-always-on property set. |
| |
| properties: |
| lltc,fb-voltage-divider: |
| description: |
| An array of two integers containing the resistor values |
| R1 and R2 of the feedback voltage divider in ohms. |
| $ref: /schemas/types.yaml#/definitions/uint32-array |
| minItems: 2 |
| maxItems: 2 |
| |
| required: |
| - lltc,fb-voltage-divider |
| |
| properties: |
| ldo1: |
| type: object |
| unevaluatedProperties: false |
| $ref: regulator.yaml# |
| description: |
| The LDO1 standby regulator can not be disabled and thus should |
| have the regulator-always-on property set. See patternProperties |
| description above for the rest of the details. |
| |
| properties: |
| lltc,fb-voltage-divider: |
| description: |
| An array of two integers containing the resistor values |
| R1 and R2 of the feedback voltage divider in ohms. |
| $ref: /schemas/types.yaml#/definitions/uint32-array |
| minItems: 2 |
| maxItems: 2 |
| |
| required: |
| - lltc,fb-voltage-divider |
| - regulator-always-on |
| |
| ldo3: |
| type: object |
| unevaluatedProperties: false |
| $ref: regulator.yaml# |
| description: |
| The LDO3 regulator is fixed to 1.8 V. See patternProperties |
| description above for the rest of the details. |
| |
| required: |
| - compatible |
| - reg |
| - regulators |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| pmic@3c { |
| compatible = "lltc,ltc3676"; |
| reg = <0x3c>; |
| |
| regulators { |
| sw1_reg: sw1 { |
| regulator-min-microvolt = <674400>; |
| regulator-max-microvolt = <1308000>; |
| lltc,fb-voltage-divider = <127000 200000>; |
| regulator-ramp-delay = <7000>; |
| regulator-boot-on; |
| regulator-always-on; |
| }; |
| |
| sw2_reg: sw2 { |
| regulator-min-microvolt = <1033310>; |
| regulator-max-microvolt = <200400>; |
| lltc,fb-voltage-divider = <301000 200000>; |
| regulator-ramp-delay = <7000>; |
| regulator-boot-on; |
| regulator-always-on; |
| }; |
| |
| sw3_reg: sw3 { |
| regulator-min-microvolt = <674400>; |
| regulator-max-microvolt = <130800>; |
| lltc,fb-voltage-divider = <127000 200000>; |
| regulator-ramp-delay = <7000>; |
| regulator-boot-on; |
| regulator-always-on; |
| }; |
| |
| sw4_reg: sw4 { |
| regulator-min-microvolt = <868310>; |
| regulator-max-microvolt = <168400>; |
| lltc,fb-voltage-divider = <221000 200000>; |
| regulator-ramp-delay = <7000>; |
| regulator-boot-on; |
| regulator-always-on; |
| }; |
| |
| ldo2_reg: ldo2 { |
| regulator-min-microvolt = <2490375>; |
| regulator-max-microvolt = <2490375>; |
| lltc,fb-voltage-divider = <487000 200000>; |
| regulator-boot-on; |
| regulator-always-on; |
| }; |
| |
| ldo3_reg: ldo3 { |
| regulator-min-microvolt = <1800000>; |
| regulator-max-microvolt = <1800000>; |
| regulator-boot-on; |
| }; |
| |
| ldo4_reg: ldo4 { |
| regulator-min-microvolt = <3023250>; |
| regulator-max-microvolt = <3023250>; |
| lltc,fb-voltage-divider = <634000 200000>; |
| regulator-boot-on; |
| regulator-always-on; |
| }; |
| }; |
| }; |
| }; |
