447 lines
12 KiB
YAML
447 lines
12 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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$id: http://devicetree.org/schemas/regulator/maxim,max8997.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Maxim MAX8997 Power Management IC
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maintainers:
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- Krzysztof Kozlowski <krzk@kernel.org>
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description: |
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The Maxim MAX8997 is a Power Management IC which includes voltage and current
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regulators, charger controller with fuel gauge, RTC, clock outputs, haptic
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motor driver, flash LED driver and Micro-USB Interface Controller.
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The binding here is not complete and describes only regulator and charger
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controller parts.
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properties:
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compatible:
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const: maxim,max8997-pmic
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charger-supply:
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description: |
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Regulator node for charging current.
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interrupts:
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items:
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- description: irq1 interrupt
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- description: alert interrupt
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max8997,pmic-buck1-dvs-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 8
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description: |
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A set of 8 voltage values in micro-volt (uV) units for buck1 when
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changing voltage using GPIO DVS.
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If none of max8997,pmic-buck[1/2/5]-uses-gpio-dvs optional property is
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specified, the max8997,pmic-buck[1/2/5]-dvs-voltage property should
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specify at least one voltage level (which would be a safe operating
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voltage).
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max8997,pmic-buck2-dvs-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 8
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description: |
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A set of 8 voltage values in micro-volt (uV) units for buck2 when
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changing voltage using GPIO DVS.
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If none of max8997,pmic-buck[1/2/5]-uses-gpio-dvs optional property is
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specified, the max8997,pmic-buck[1/2/5]-dvs-voltage property should
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specify at least one voltage level (which would be a safe operating
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voltage).
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max8997,pmic-buck5-dvs-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 8
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description: |
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A set of 8 voltage values in micro-volt (uV) units for buck5 when
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changing voltage using GPIO DVS.
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If none of max8997,pmic-buck[1/2/5]-uses-gpio-dvs optional property is
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specified, the max8997,pmic-buck[1/2/5]-dvs-voltage property should
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specify at least one voltage level (which would be a safe operating
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voltage).
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max8997,pmic-buck1-uses-gpio-dvs:
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type: boolean
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description: |
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buck1 can be controlled by GPIO DVS.
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max8997,pmic-buck2-uses-gpio-dvs:
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type: boolean
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description: |
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buck2 can be controlled by GPIO DVS.
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max8997,pmic-buck5-uses-gpio-dvs:
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type: boolean
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description: |
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buck5 can be controlled by GPIO DVS.
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max8997,pmic-buck125-default-dvs-idx:
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 7
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default: 0
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description: |
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Default voltage setting selected from the possible 8 options selectable
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by the dvs gpios. The value of this property should be between 0 and 7.
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If not specified or if out of range, the default value of this property
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is set to 0.
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max8997,pmic-buck125-dvs-gpios:
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minItems: 3
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maxItems: 3
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description: |
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GPIO specifiers for three host gpio's used for DVS.
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max8997,pmic-ignore-gpiodvs-side-effect:
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type: boolean
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description: |
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When GPIO-DVS mode is used for multiple bucks, changing the voltage value
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of one of the bucks may affect that of another buck, which is the side
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effect of the change (set_voltage). Use this property to ignore such
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side effects and change the voltage.
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reg:
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maxItems: 1
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regulators:
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type: object
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additionalProperties: false
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description:
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List of child nodes that specify the regulators.
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patternProperties:
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# 1-18 and 21 LDOs
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"^LDO([1-9]|1[0-8]|21)$":
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type: object
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$ref: regulator.yaml#
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description:
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Properties for single LDO regulator.
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properties:
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regulator-name: true
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required:
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- regulator-name
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unevaluatedProperties: false
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# 7 bucks
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"^BUCK[1-7]$":
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type: object
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$ref: regulator.yaml#
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description:
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Properties for single BUCK regulator.
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properties:
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regulator-name: true
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required:
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- regulator-name
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unevaluatedProperties: false
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"^EN32KHZ_[AC]P$":
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type: object
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$ref: regulator.yaml#
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description:
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32768 Hz clock output (modelled as regulator)
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properties:
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regulator-name: true
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regulator-always-on: true
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regulator-boot-on: true
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required:
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- regulator-name
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additionalProperties: false
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properties:
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CHARGER:
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type: object
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$ref: regulator.yaml#
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description: main battery charger current control
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properties:
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regulator-name: true
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required:
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- regulator-name
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unevaluatedProperties: false
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CHARGER_CV:
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type: object
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$ref: regulator.yaml#
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description: main battery charger voltage control
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properties:
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regulator-name: true
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required:
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- regulator-name
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unevaluatedProperties: false
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CHARGER_TOPOFF:
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type: object
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$ref: regulator.yaml#
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description: end of charge current threshold level
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properties:
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regulator-name: true
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required:
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- regulator-name
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unevaluatedProperties: false
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ENVICHG:
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type: object
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$ref: regulator.yaml#
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description: |
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Battery Charging Current Monitor Output. This is a fixed voltage type
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regulator
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properties:
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regulator-name: true
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required:
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- regulator-name
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unevaluatedProperties: false
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ESAFEOUT1:
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type: object
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$ref: regulator.yaml#
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description: LDO19
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properties:
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regulator-name: true
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required:
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- regulator-name
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unevaluatedProperties: false
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ESAFEOUT2:
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type: object
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$ref: regulator.yaml#
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description: LDO20
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properties:
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regulator-name: true
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required:
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- regulator-name
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unevaluatedProperties: false
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required:
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- compatible
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- max8997,pmic-buck1-dvs-voltage
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- max8997,pmic-buck2-dvs-voltage
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- max8997,pmic-buck5-dvs-voltage
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- reg
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- regulators
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dependencies:
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max8997,pmic-buck1-uses-gpio-dvs: [ 'max8997,pmic-buck125-dvs-gpios' ]
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max8997,pmic-buck2-uses-gpio-dvs: [ 'max8997,pmic-buck125-dvs-gpios' ]
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max8997,pmic-buck5-uses-gpio-dvs: [ 'max8997,pmic-buck125-dvs-gpios' ]
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additionalProperties: false
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if:
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anyOf:
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- required:
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- max8997,pmic-buck1-uses-gpio-dvs
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- required:
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- max8997,pmic-buck2-uses-gpio-dvs
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- required:
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- max8997,pmic-buck5-uses-gpio-dvs
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then:
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properties:
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max8997,pmic-buck1-dvs-voltage:
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minItems: 8
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maxItems: 8
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max8997,pmic-buck2-dvs-voltage:
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minItems: 8
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maxItems: 8
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max8997,pmic-buck5-dvs-voltage:
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minItems: 8
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maxItems: 8
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examples:
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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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pmic@66 {
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compatible = "maxim,max8997-pmic";
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reg = <0x66>;
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interrupts-extended = <&gpx0 7 IRQ_TYPE_LEVEL_LOW>,
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<&gpx2 3 IRQ_TYPE_EDGE_FALLING>;
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max8997,pmic-buck1-uses-gpio-dvs;
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max8997,pmic-buck2-uses-gpio-dvs;
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max8997,pmic-buck5-uses-gpio-dvs;
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max8997,pmic-ignore-gpiodvs-side-effect;
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max8997,pmic-buck125-default-dvs-idx = <0>;
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max8997,pmic-buck125-dvs-gpios = <&gpx0 5 GPIO_ACTIVE_HIGH>,
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<&gpx0 6 GPIO_ACTIVE_HIGH>,
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<&gpl0 0 GPIO_ACTIVE_HIGH>;
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max8997,pmic-buck1-dvs-voltage = <1350000>, <1300000>,
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<1250000>, <1200000>,
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<1150000>, <1100000>,
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<1000000>, <950000>;
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max8997,pmic-buck2-dvs-voltage = <1100000>, <1000000>,
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<950000>, <900000>,
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<1100000>, <1000000>,
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<950000>, <900000>;
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max8997,pmic-buck5-dvs-voltage = <1200000>, <1200000>,
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<1200000>, <1200000>,
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<1200000>, <1200000>,
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<1200000>, <1200000>;
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pinctrl-0 = <&max8997_irq>, <&otg_gp>, <&usb_sel>;
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pinctrl-names = "default";
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charger-supply = <&charger_reg>;
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regulators {
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LDO1 {
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regulator-name = "VADC_3.3V_C210";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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LDO2 {
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regulator-name = "VALIVE_1.1V_C210";
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regulator-min-microvolt = <1100000>;
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regulator-max-microvolt = <1100000>;
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regulator-always-on;
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};
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BUCK1 {
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regulator-name = "VARM_1.2V_C210";
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regulator-min-microvolt = <65000>;
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regulator-max-microvolt = <2225000>;
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regulator-always-on;
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};
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// ...
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BUCK7 {
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regulator-name = "VCC_SUB_2.0V";
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regulator-min-microvolt = <2000000>;
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regulator-max-microvolt = <2000000>;
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regulator-always-on;
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};
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ESAFEOUT1 {
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regulator-name = "SAFEOUT1";
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};
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ESAFEOUT2 {
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regulator-name = "SAFEOUT2";
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regulator-boot-on;
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};
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EN32KHZ_AP {
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regulator-name = "EN32KHZ_AP";
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regulator-always-on;
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};
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EN32KHZ_CP {
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regulator-name = "EN32KHZ_CP";
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regulator-always-on;
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};
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CHARGER {
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regulator-name = "CHARGER";
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regulator-min-microamp = <200000>;
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regulator-max-microamp = <950000>;
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};
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CHARGER_CV {
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regulator-name = "CHARGER_CV";
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regulator-min-microvolt = <4200000>;
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regulator-max-microvolt = <4200000>;
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regulator-always-on;
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};
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CHARGER_TOPOFF {
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regulator-name = "CHARGER_TOPOFF";
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regulator-min-microamp = <200000>;
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regulator-max-microamp = <200000>;
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regulator-always-on;
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};
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};
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};
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};
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- |
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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>;
|
||
|
|
|
||
|
|
pmic@66 {
|
||
|
|
compatible = "maxim,max8997-pmic";
|
||
|
|
reg = <0x66>;
|
||
|
|
|
||
|
|
interrupt-parent = <&gpx0>;
|
||
|
|
interrupts = <4 IRQ_TYPE_LEVEL_LOW>,
|
||
|
|
<3 IRQ_TYPE_EDGE_FALLING>;
|
||
|
|
pinctrl-names = "default";
|
||
|
|
pinctrl-0 = <&max8997_irq>;
|
||
|
|
|
||
|
|
max8997,pmic-buck1-dvs-voltage = <1350000>;
|
||
|
|
max8997,pmic-buck2-dvs-voltage = <1100000>;
|
||
|
|
max8997,pmic-buck5-dvs-voltage = <1200000>;
|
||
|
|
|
||
|
|
regulators {
|
||
|
|
LDO1 {
|
||
|
|
regulator-name = "VDD_ABB_3.3V";
|
||
|
|
regulator-min-microvolt = <3300000>;
|
||
|
|
regulator-max-microvolt = <3300000>;
|
||
|
|
};
|
||
|
|
|
||
|
|
// ...
|
||
|
|
|
||
|
|
BUCK1 {
|
||
|
|
regulator-name = "VDD_ARM_1.2V";
|
||
|
|
regulator-min-microvolt = <950000>;
|
||
|
|
regulator-max-microvolt = <1350000>;
|
||
|
|
regulator-always-on;
|
||
|
|
regulator-boot-on;
|
||
|
|
};
|
||
|
|
|
||
|
|
// ...
|
||
|
|
|
||
|
|
EN32KHZ_AP {
|
||
|
|
regulator-name = "EN32KHZ_AP";
|
||
|
|
regulator-always-on;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
};
|
||
|
|
};
|