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dt-bindings: power: supply: Add device-tree binding for Summit SMB3xx
Summit SMB3xx series is a Programmable Switching Li+ Battery Charger. This patch adds device-tree binding for Summit SMB345, SMB347 and SMB358 chargers. Signed-off-by: David Heidelberg <david@ixit.cz> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
David Heidelberg
Sebastian Reichel
parent
873e63267b
commit
c1f90759b3
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/power/supply/summit,smb347-charger.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Battery charger driver for SMB345, SMB347 and SMB358
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maintainers:
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- David Heidelberg <david@ixit.cz>
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- Dmitry Osipenko <digetx@gmail.com>
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properties:
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compatible:
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enum:
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- summit,smb345
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- summit,smb347
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- summit,smb358
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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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monitored-battery:
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description: phandle to the battery node
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$ref: /schemas/types.yaml#/definitions/phandle
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summit,enable-usb-charging:
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type: boolean
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description: Enable charging through USB.
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summit,enable-otg-charging:
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type: boolean
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description: Provide power for USB OTG
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summit,enable-mains-charging:
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type: boolean
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description: Enable charging through mains
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summit,enable-charge-control:
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description: Enable charging control
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$ref: /schemas/types.yaml#/definitions/uint32
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enum:
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- 0 # SMB3XX_CHG_ENABLE_SW SW (I2C interface)
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- 1 # SMB3XX_CHG_ENABLE_PIN_ACTIVE_LOW Pin control (Active Low)
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- 2 # SMB3XX_CHG_ENABLE_PIN_ACTIVE_HIGH Pin control (Active High)
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summit,fast-voltage-threshold-microvolt:
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description: Voltage threshold to transit to fast charge mode (in uV)
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minimum: 2400000
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maximum: 3000000
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summit,mains-current-limit-microamp:
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description: Maximum input current from AC/DC input (in uA)
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summit,usb-current-limit-microamp:
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description: Maximum input current from USB input (in uA)
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summit,charge-current-compensation-microamp:
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description: Charge current compensation (in uA)
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summit,chip-temperature-threshold-celsius:
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description: Chip temperature for thermal regulation in °C.
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enum: [100, 110, 120, 130]
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summit,soft-compensation-method:
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description: Soft temperature limit compensation method
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$ref: /schemas/types.yaml#/definitions/uint32
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enum:
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- 0 # SMB3XX_SOFT_TEMP_COMPENSATE_NONE Compensation none
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- 1 # SMB3XX_SOFT_TEMP_COMPENSATE_CURRENT Current compensation
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- 2 # SMB3XX_SOFT_TEMP_COMPENSATE_VOLTAGE Voltage compensation
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allOf:
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- if:
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properties:
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compatible:
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enum:
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- summit,smb345
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- summit,smb358
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then:
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properties:
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summit,mains-current-limit-microamp:
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enum: [ 300000, 500000, 700000, 1000000,
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1500000, 1800000, 2000000]
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summit,usb-current-limit-microamp:
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enum: [ 300000, 500000, 700000, 1000000,
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1500000, 1800000, 2000000]
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summit,charge-current-compensation-microamp:
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enum: [200000, 450000, 600000, 900000]
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else:
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properties:
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summit,mains-current-limit-microamp:
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enum: [ 300000, 500000, 700000, 900000, 1200000,
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1500000, 1800000, 2000000, 2200000, 2500000]
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summit,usb-current-limit-microamp:
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enum: [ 300000, 500000, 700000, 900000, 1200000,
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1500000, 1800000, 2000000, 2200000, 2500000]
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summit,charge-current-compensation-microamp:
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enum: [250000, 700000, 900000, 1200000]
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required:
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- compatible
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- reg
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anyOf:
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- required:
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- summit,enable-usb-charging
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- required:
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- summit,enable-otg-charging
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- required:
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- summit,enable-mains-charging
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/power/summit,smb347-charger.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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charger@7f {
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compatible = "summit,smb347";
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reg = <0x7f>;
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summit,enable-charge-control = <SMB3XX_CHG_ENABLE_PIN_ACTIVE_HIGH>;
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summit,chip-temperature-threshold-celsius = <110>;
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summit,mains-current-limit-microamp = <2000000>;
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summit,usb-current-limit-microamp = <500000>;
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summit,enable-usb-charging;
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summit,enable-mains-charging;
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monitored-battery = <&battery>;
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};
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};
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battery: battery-cell {
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compatible = "simple-battery";
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constant-charge-current-max-microamp = <1800000>;
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operating-range-celsius = <0 45>;
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alert-celsius = <3 42>;
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};
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19
include/dt-bindings/power/summit,smb347-charger.h
Normal file
19
include/dt-bindings/power/summit,smb347-charger.h
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@ -0,0 +1,19 @@
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/* SPDX-License-Identifier: (GPL-2.0-or-later or MIT) */
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/*
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* Author: David Heidelberg <david@ixit.cz>
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*/
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#ifndef _DT_BINDINGS_SMB347_CHARGER_H
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#define _DT_BINDINGS_SMB347_CHARGER_H
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/* Charging compensation method */
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#define SMB3XX_SOFT_TEMP_COMPENSATE_NONE 0
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#define SMB3XX_SOFT_TEMP_COMPENSATE_CURRENT 1
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#define SMB3XX_SOFT_TEMP_COMPENSATE_VOLTAGE 2
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/* Charging enable control */
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#define SMB3XX_CHG_ENABLE_SW 0
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#define SMB3XX_CHG_ENABLE_PIN_ACTIVE_LOW 1
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#define SMB3XX_CHG_ENABLE_PIN_ACTIVE_HIGH 2
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#endif
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