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# 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;
};
};
};
};
|
