dt-bindings: power: supply: bq24257: Convert to DT schema format
Convert the binding to DT schema format. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> Reviewed-by: Rob Herring <robh@kernel.org>
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Sebastian Reichel
Sebastian Reichel
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102d4a0b69
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Binding for TI bq24250/bq24251/bq24257 Li-Ion Charger
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Required properties:
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- compatible: Should contain one of the following:
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* "ti,bq24250"
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* "ti,bq24251"
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* "ti,bq24257"
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- reg: integer, i2c address of the device.
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- interrupts: Interrupt mapping for GPIO IRQ (configure for both edges). Use in
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conjunction with "interrupt-parent".
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- ti,battery-regulation-voltage: integer, maximum charging voltage in uV.
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- ti,charge-current: integer, maximum charging current in uA.
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- ti,termination-current: integer, charge will be terminated when current in
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constant-voltage phase drops below this value (in uA).
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Optional properties:
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- pg-gpios: GPIO used for connecting the bq2425x device PG (Power Good) pin.
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This pin is not available on all devices however it should be used if
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possible as this is the recommended way to obtain the charger's input PG
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state. If this pin is not specified a software-based approach for PG
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detection is used.
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- ti,current-limit: The maximum current to be drawn from the charger's input
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(in uA). If this property is not specified, the input limit current is
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set automatically using USB D+/D- signal based charger type detection.
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If the hardware does not support the D+/D- based detection, a default
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of 500,000 is used (=500mA) instead.
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- ti,ovp-voltage: Configures the over voltage protection voltage (in uV). If
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not specified a default of 6,5000,000 (=6.5V) is used.
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- ti,in-dpm-voltage: Configures the threshold input voltage for the dynamic
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power path management (in uV). If not specified a default of 4,360,000
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(=4.36V) is used.
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Example:
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bq24257 {
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compatible = "ti,bq24257";
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reg = <0x6a>;
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interrupt-parent = <&gpio1>;
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interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
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pg-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
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ti,battery-regulation-voltage = <4200000>;
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ti,charge-current = <1000000>;
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ti,termination-current = <50000>;
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};
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Example:
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bq24250 {
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compatible = "ti,bq24250";
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reg = <0x6a>;
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interrupt-parent = <&gpio1>;
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interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
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ti,battery-regulation-voltage = <4200000>;
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ti,charge-current = <500000>;
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ti,termination-current = <50000>;
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ti,current-limit = <900000>;
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ti,ovp-voltage = <9500000>;
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ti,in-dpm-voltage = <4440000>;
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};
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@ -0,0 +1,124 @@
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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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$id: "http://devicetree.org/schemas/power/supply/bq24257.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Binding for bq24250, bq24251 and bq24257 Li-Ion Charger
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maintainers:
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- Sebastian Reichel <sre@kernel.org>
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allOf:
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- $ref: power-supply.yaml#
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properties:
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compatible:
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enum:
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- ti,bq24250
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- ti,bq24251
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- ti,bq24257
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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ti,battery-regulation-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: maximum charging voltage in uV
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ti,charge-current:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: maximum charging current in uA
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ti,termination-current:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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charge will be terminated when current in constant-voltage phase
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drops below this value (in uA)
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pg-gpios:
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description: |
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GPIO used for connecting the bq2425x device PG (Power Good) pin.
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This pin is not available on all devices however it should be used if
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possible as this is the recommended way to obtain the charger's input PG
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state. If this pin is not specified a software-based approach for PG
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detection is used.
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maxItems: 1
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ti,current-limit:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The maximum current to be drawn from the charger's input (in uA).
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If this property is not specified, the input limit current is set
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automatically using USB D+/D- signal based charger type detection.
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If the hardware does not support the D+/D- based detection, a default
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of 500,000 is used (=500mA) instead.
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ti,ovp-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Configures the over voltage protection voltage (in uV).
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If not specified a default of 6,5000,000 (=6.5V) is used.
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ti,in-dpm-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Configures the threshold input voltage for the dynamic power path management (in uV).
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If not specified a default of 4,360,000 (=4.36V) is used.
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required:
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- compatible
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- reg
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- interrupts
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- ti,battery-regulation-voltage
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- ti,charge-current
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- ti,termination-current
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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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#include <dt-bindings/interrupt-controller/irq.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@6a {
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compatible = "ti,bq24257";
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reg = <0x6a>;
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interrupt-parent = <&gpio1>;
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interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
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pg-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
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ti,battery-regulation-voltage = <4200000>;
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ti,charge-current = <1000000>;
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ti,termination-current = <50000>;
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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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i2c0 {
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#address-cells = <1>;
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#size-cells = <0>;
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charger@6a {
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compatible = "ti,bq24250";
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reg = <0x6a>;
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interrupt-parent = <&gpio1>;
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interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
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ti,battery-regulation-voltage = <4200000>;
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ti,charge-current = <500000>;
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ti,termination-current = <50000>;
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ti,current-limit = <900000>;
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ti,ovp-voltage = <9500000>;
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ti,in-dpm-voltage = <4440000>;
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};
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};
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