Commit d913a03b authored by Sebastian Reichel's avatar Sebastian Reichel Committed by Sebastian Reichel
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dt-bindings: power: supply: ltc294x: Convert to DT schema format 



Convert the binding to DT schema format.

Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
parent 97f03280

Documentation/devicetree/bindings/power/supply/lltc,ltc294x.yaml

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# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: "http://devicetree.org/schemas/power/supply/lltc,ltc294x.yaml#"

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



title: Binding for LTC2941, LTC2942, LTC2943 and LTC2944 battery fuel gauges



description: |

  All chips measure battery capacity.

  The LTC2942 is pin compatible with the LTC2941, it adds voltage and

  temperature monitoring, and is runtime detected. LTC2943 and LTC2944

  are software compatible, uses a slightly different conversion formula

  for the charge counter and adds voltage, current and temperature monitoring.



maintainers:

  - Sebastian Reichel <sre@kernel.org>



allOf:

  - $ref: power-supply.yaml#



properties:

  compatible:

    enum:

      - lltc,ltc2941

      - lltc,ltc2942

      - lltc,ltc2943

      - lltc,ltc2944



  reg:

    maxItems: 1



  lltc,resistor-sense:

    $ref: /schemas/types.yaml#/definitions/int32

    description: |

      Sense resistor value in milli-ohms.

      Can be negative value when the battery has been connected to the wrong end of the resistor.



  lltc,prescaler-exponent:

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

    description: |

      The prescaler exponent as explained in the datasheet.

      This determines the range and accuracy of the gauge.

      The value is programmed into the chip only if it differs from the current setting.

      The setting is lost when the battery is disconnected.



required:

  - compatible

  - reg

  - lltc,resistor-sense

  - lltc,prescaler-exponent



additionalProperties: false



examples:

  - |

    i2c0 {

      #address-cells = <1>;

      #size-cells = <0>;

      battery@64 {

        compatible = "lltc,ltc2943";

        reg = <0x64>;

        lltc,resistor-sense = <15>;

        lltc,prescaler-exponent = <5>; /* 2^(2*5) = 1024 */

      };

    };

Documentation/devicetree/bindings/power/supply/ltc2941.txt

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binding for LTC2941, LTC2942, LTC2943 and LTC2944 battery gauges



All chips measure battery capacity.

The LTC2942 is pin compatible with the LTC2941, it adds voltage and

temperature monitoring, and is runtime detected. LTC2943 and LTC2944

is software compatible, uses a slightly different conversion formula

for the charge counter and adds voltage, current and temperature monitoring.



Required properties:

- compatible: Should contain "lltc,ltc2941", "lltc,ltc2942", "lltc,ltc2943"

    or "lltc,ltc2944" which also indicates the type of I2C chip attached.

- reg: The 7-bit I2C address.

- lltc,resistor-sense: The sense resistor value in milli-ohms. Can be a 32-bit

    negative value when the battery has been connected to the wrong end of the

    resistor.

- lltc,prescaler-exponent: The prescaler exponent as explained in the datasheet.

    This determines the range and accuracy of the gauge. The value is programmed

    into the chip only if it differs from the current setting. The setting is

    lost when the battery is disconnected.



Example from the Topic Miami Florida board:



	fuelgauge: ltc2943@64 {

		compatible = "lltc,ltc2943";

		reg = <0x64>;

		lltc,resistor-sense = <15>;

		lltc,prescaler-exponent = <5>; /* 2^(2*5) = 1024 */

	};