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