Commit 26fe7d1d authored by Mike Looijmans's avatar Mike Looijmans Committed by Sebastian Reichel
Browse files

dt-bindings: power/supply: Add ltc4162-l-charger 



Add support for the LTC4162-L Li-Ion battery charger. The driver allows
reading back telemetry and to set some charging options like the input
current limit.

This adds the devicetree bindings.

Signed-off-by: default avatarMike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 7088ef67

Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml

0 → 100644
+69 −0
Original line number Original line Diff line number Diff line 
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

# Copyright (C) 2020 Topic Embedded Products

%YAML 1.2

---

$id: "http://devicetree.org/schemas/power/supply/ltc4162-l.yaml#"

$schema: "http://devicetree.org/meta-schemas/core.yaml#"



title: Linear Technology (Analog Devices) LTC4162-L Charger



maintainers:

  - Mike Looijmans <mike.looijmans@topic.nl>



description: |

  The LTC ® 4162-L is an advanced monolithic synchronous step-down switching

  battery charger and PowerPath (TM) manager that seamlessly manages power

  distribution between input sources such as wall adapters, backplanes, solar

  panels, etc., and a rechargeable Lithium-Ion/Polymer battery.



  Specifications about the charger can be found at:

    https://www.analog.com/en/products/ltc4162-s.html



properties:

  compatible:

    enum:

      - lltc,ltc4162-l



  reg:

    maxItems: 1

    description: I2C address of the charger.



  lltc,rsnsb-micro-ohms:

    $ref: /schemas/types.yaml#/definitions/uint32

    description: Battery sense resistor in microohm.

    minimum: 1000



  lltc,rsnsi-micro-ohms:

    $ref: /schemas/types.yaml#/definitions/uint32

    description: Input current sense resistor in microohm.

    minimum: 1000



  lltc,cell-count:

    $ref: /schemas/types.yaml#/definitions/uint32

    description: |

      Number of battery cells. If not provided, will be obtained from the chip

      once the external power is applied. Omit this when the number of cells

      is somewhat dynamic. Without it, several measurements will return 0 until

      the charger is connected to an external supply.



required:

  - compatible

  - reg

  - lltc,rsnsb-micro-ohms

  - lltc,rsnsi-micro-ohms



additionalProperties: false



examples:

  - |

    i2c0 {

      #address-cells = <1>;

      #size-cells = <0>;

      charger: battery-charger@68 {

              compatible = "lltc,ltc4162-l";

              reg = <0x68>;

              lltc,rsnsb-micro-ohms = <10000>;

              lltc,rsnsi-micro-ohms = <16000>;

              lltc,cell-count = <2>;

      };

    };