90 lines
2.7 KiB
YAML
90 lines
2.7 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2021 Sebastian Reichel
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/power/supply/bq24735.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Binding for TI BQ24735 Li-Ion Battery Charger
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maintainers:
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- Sebastian Reichel <sre@kernel.org>
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allOf:
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- $ref: power-supply.yaml#
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properties:
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compatible:
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const: ti,bq24735
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reg:
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maxItems: 1
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interrupts:
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description: AC adapter plug event interrupt
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maxItems: 1
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ti,ac-detect-gpios:
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maxItems: 1
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description: |
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This GPIO is optionally used to read the AC adapter status. This is a Host GPIO
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that is configured as an input and connected to the ACOK pin on the bq24735.
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Note: for backwards compatibility reasons, the GPIO must be active on AC adapter
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absence despite ACOK being active (high) on AC adapter presence.
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ti,charge-current:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Used to control and set the charging current.
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This value must be between 128mA and 8.128A with a 64mA step resolution.
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The POR value is 0x0000h. This number is in mA (e.g. 8192).
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See spec for more information about the ChargeCurrent (0x14h) register.
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ti,charge-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Used to control and set the charging voltage.
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This value must be between 1.024V and 19.2V with a 16mV step resolution.
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The POR value is 0x0000h. This number is in mV (e.g. 19200).
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See spec for more information about the ChargeVoltage (0x15h) register.
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ti,input-current:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Used to control and set the charger input current.
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This value must be between 128mA and 8.064A with a 128mA step resolution.
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The POR value is 0x1000h. This number is in mA (e.g. 8064).
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See the spec for more information about the InputCurrent (0x3fh) register.
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ti,external-control:
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type: boolean
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description: |
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Indicates that the charger is configured externally and that the host should not
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attempt to enable/disable charging or set the charge voltage/current.
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poll-interval:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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If 'interrupts' is not specified, poll AC adapter presence with this interval (milliseconds).
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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i2c0 {
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#address-cells = <1>;
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#size-cells = <0>;
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charger@9 {
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compatible = "ti,bq24735";
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reg = <0x9>;
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ti,ac-detect-gpios = <&gpio 72 0x1>;
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};
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};
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