# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/mfd/maxim,max5970.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Regulator for MAX5970 Smart Switch from Maxim Integrated
maintainers:
- Patrick Rudolph <patrick.rudolph@9elements.com>
description: |
The smart switch provides no output regulation, but independent fault protection
and voltage and current sensing.
Programming is done through I2C bus.
Datasheets:
https://datasheets.maximintegrated.com/en/ds/MAX5970.pdf
https://datasheets.maximintegrated.com/en/ds/MAX5978.pdf
properties:
compatible:
enum:
- maxim,max5970
- maxim,max5978
reg:
maxItems: 1
interrupts:
maxItems: 1
leds:
type: object
description:
Properties for four LEDS.
properties:
"#address-cells":
const: 1
"#size-cells":
const: 0
patternProperties:
"^led@[0-3]$":
$ref: /schemas/leds/common.yaml#
unevaluatedProperties: false
type: object
properties:
reg:
maximum: 3
additionalProperties: false
vss1-supply:
description: Supply of the first channel.
vss2-supply:
description: Supply of the second channel.
regulators:
type: object
description:
Properties for both hot swap control/switch.
patternProperties:
"^sw[0-1]$":
$ref: /schemas/regulator/regulator.yaml#
type: object
properties:
shunt-resistor-micro-ohms:
description: |
The value of current sense resistor in microohms.
required:
- shunt-resistor-micro-ohms
unevaluatedProperties: false
additionalProperties: false
required:
- compatible
- reg
- regulators
- vss1-supply
allOf:
- if:
properties:
compatible:
enum:
- maxim,max5970
then:
required:
- vss2-supply
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
regulator@3a {
compatible = "maxim,max5978";
reg = <0x3a>;
vss1-supply = <&p3v3>;
regulators {
sw0_ref_0: sw0 {
shunt-resistor-micro-ohms = <12000>;
};
};
leds {
#address-cells = <1>;
#size-cells = <0>;
led@0 {
reg = <0>;
label = "led0";
default-state = "on";
};
led@1 {
reg = <1>;
label = "led1";
default-state = "on";
};
};
};
};
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
regulator@3a {
compatible = "maxim,max5970";
reg = <0x3a>;
vss1-supply = <&p3v3>;
vss2-supply = <&p5v>;
regulators {
sw0_ref_1: sw0 {
shunt-resistor-micro-ohms = <12000>;
};
sw1_ref_1: sw1 {
shunt-resistor-micro-ohms = <10000>;
};
};
};
};
...
