# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/ams,as3711.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Austria MicroSystems AS3711 Quad Buck High Current PMIC with Charger
maintainers:
- Guennadi Liakhovetski <[email protected]>
description:
AS3711 is an I2C PMIC from Austria MicroSystems with multiple DC/DC and LDO
power supplies, a battery charger and an RTC. So far only bindings for the
two step-up DC/DC converters are defined.
properties:
compatible:
const: ams,as3711
reg:
maxItems: 1
backlight:
description:
Step-up converter configuration, to be used as a backlight source
type: object
additionalProperties: false
properties:
compatible:
const: ams,as3711-bl
su1-dev:
description: Framebuffer phandle for the first step-up converter
$ref: /schemas/types.yaml#/definitions/phandle
su1-max-uA:
description: Maximum current for the first step-up converter
$ref: /schemas/types.yaml#/definitions/uint32
su2-dev:
description: Framebuffer phandle for the second step-up converter
$ref: /schemas/types.yaml#/definitions/phandle
su2-max-uA:
description: Maximum current for the second step-up converter
$ref: /schemas/types.yaml#/definitions/uint32
su2-feedback-voltage:
description: Second step-up converter uses voltage feedback
type: boolean
su2-feedback-curr1:
description:
Second step-up converter uses CURR1 input for current feedback
type: boolean
su2-feedback-curr2:
description:
Second step-up converter uses CURR2 input for current feedback
type: boolean
su2-feedback-curr3:
description:
Second step-up converter uses CURR3 input for current feedback
type: boolean
su2-feedback-curr-auto:
description:
Second step-up converter uses automatic current feedback selection
type: boolean
su2-fbprot-lx-sd4:
description:
Second step-up converter uses LX_SD4 for over-voltage protection
type: boolean
su2-fbprot-gpio2:
description:
Second step-up converter uses GPIO2 for over-voltage protection
type: boolean
su2-fbprot-gpio3:
description:
Second step-up converter uses GPIO3 for over-voltage protection
type: boolean
su2-fbprot-gpio4:
description:
Second step-up converter uses GPIO4 for over-voltage protection
type: boolean
su2-auto-curr1:
description:
Second step-up converter uses CURR1 input for automatic current
feedback
type: boolean
su2-auto-curr2:
description:
Second step-up converter uses CURR2 input for automatic current
feedback
type: boolean
su2-auto-curr3:
description:
Second step-up converter uses CURR3 input for automatic current
feedback
type: boolean
required:
- compatible
dependentRequired:
# To use the SU1 converter as a backlight source the following two
# properties must be provided:
su1-dev: [ su1-max-uA ]
su1-max-uA: [ su1-dev ]
# To use the SU2 converter as a backlight source the following two
# properties must be provided:
su2-dev: [ su2-max-uA ]
su2-max-uA: [ su2-dev ]
su2-feedback-voltage: [ su2-dev ]
su2-feedback-curr1: [ su2-dev ]
su2-feedback-curr2: [ su2-dev ]
su2-feedback-curr3: [ su2-dev ]
su2-feedback-curr-auto: [ su2-dev ]
su2-fbprot-lx-sd4: [ su2-dev ]
su2-fbprot-gpio2: [ su2-dev ]
su2-fbprot-gpio3: [ su2-dev ]
su2-fbprot-gpio4: [ su2-dev ]
su2-auto-curr1: [ su2-feedback-curr-auto ]
su2-auto-curr2: [ su2-feedback-curr-auto ]
su2-auto-curr3: [ su2-feedback-curr-auto ]
dependentSchemas:
su2-dev:
allOf:
- oneOf:
- required:
- su2-feedback-voltage
- required:
- su2-feedback-curr1
- required:
- su2-feedback-curr2
- required:
- su2-feedback-curr3
- required:
- su2-feedback-curr-auto
- oneOf:
- required:
- su2-fbprot-lx-sd4
- required:
- su2-fbprot-gpio2
- required:
- su2-fbprot-gpio3
- required:
- su2-fbprot-gpio4
su2-feedback-curr-auto:
anyOf:
- required:
- su2-auto-curr1
- required:
- su2-auto-curr2
- required:
- su2-auto-curr3
regulators:
description: Other DC/DC and LDO supplies
type: object
unevaluatedProperties: false
patternProperties:
"^(sd[1-4]|ldo[1-8])$":
type: object
$ref: /schemas/regulator/regulator.yaml#
unevaluatedProperties: false
required:
- compatible
- reg
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
pmic@40 {
compatible = "ams,as3711";
reg = <0x40>;
regulators {
sd4 {
regulator-name = "1.215V";
regulator-min-microvolt = <1215000>;
regulator-max-microvolt = <1235000>;
};
ldo2 {
regulator-name = "2.8V CPU";
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
regulator-always-on;
regulator-boot-on;
};
};
backlight {
compatible = "ams,as3711-bl";
su2-dev = <&lcdc>;
su2-max-uA = <36000>;
su2-feedback-curr-auto;
su2-fbprot-gpio4;
su2-auto-curr1;
su2-auto-curr2;
su2-auto-curr3;
};
};
};
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