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# SPDX-License-Identifier: GPL-2.0-only
%YAML 1.2
---
$id: http://devicetree.org/schemas/regulator/maxim,max8973.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Maxim MAX8973/MAX77621 voltage regulator
maintainers:
- Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
allOf:
- $ref: regulator.yaml#
properties:
compatible:
enum:
- maxim,max8973
- maxim,max77621
junction-warn-millicelsius:
description: |
Junction warning temperature threshold in millicelsius. If die
temperature crosses this level then device generates the warning
interrupts.
Please note that thermal functionality is only supported on MAX77621. The
supported threshold warning temperature for MAX77621 are 120 degC and 140
degC.
maxim,dvs-gpio:
maxItems: 1
description: |
GPIO which is connected to DVS pin of device.
maxim,dvs-default-state:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
description: |
Default state of GPIO during initialisation.
1 for HIGH and 0 for LOW.
maxim,externally-enable:
type: boolean
description: |
Externally control the regulator output enable/disable.
maxim,enable-gpio:
maxItems: 1
description: |
GPIO for enable control. If the valid GPIO is provided then externally
enable control will be considered.
maxim,enable-remote-sense:
type: boolean
description: Enable remote sense.
maxim,enable-falling-slew-rate:
type: boolean
description: Enable falling slew rate.
maxim,enable-active-discharge:
type: boolean
description: Eable active discharge.
maxim,enable-frequency-shift:
type: boolean
description: Enable 9% frequency shift.
maxim,enable-bias-control:
type: boolean
description: |
Enable bias control which can reduce the startup delay to 20us from 220us.
maxim,enable-etr:
type: boolean
description: Enable Enhanced Transient Response.
maxim,enable-high-etr-sensitivity:
type: boolean
description: |
Enhanced transient response circuit is enabled and set for high
sensitivity. If this property is available then etr will be enable
default.
Enhanced transient response (ETR) will affect the configuration of CKADV.
reg:
maxItems: 1
interrupts:
maxItems: 1
required:
- compatible
- reg
unevaluatedProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
regulator@1b {
compatible = "maxim,max8973";
reg = <0x1b>;
regulator-min-microvolt = <935000>;
regulator-max-microvolt = <1200000>;
regulator-boot-on;
regulator-always-on;
};
};
- |
#include <dt-bindings/gpio/tegra-gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
regulator@1b {
compatible = "maxim,max77621";
reg = <0x1b>;
interrupt-parent = <&gpio>;
interrupts = <TEGRA_GPIO(Y, 1) IRQ_TYPE_LEVEL_LOW>;
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1231250>;
regulator-name = "PPVAR_CPU";
regulator-ramp-delay = <12500>;
maxim,dvs-default-state = <1>;
maxim,enable-active-discharge;
maxim,enable-bias-control;
maxim,enable-etr;
maxim,enable-gpio = <&pmic 5 GPIO_ACTIVE_HIGH>;
maxim,externally-enable;
};
};
|
