Commit 10e1fb88 authored by Alexander Stein's avatar Alexander Stein Committed by Alexandre Belloni
Browse files

dt-bindings: rtc: nxp,pcf85063: Convert to DT schema 



Convert the NXP PCF85063 RTC binding to DT schema format.

Add 'interrupts' and 'wakeup-source' as this device has an interrupt
which was not documented, but is in use.
'clock-output-names' and '#clock-cells' are added as well, those were
probably missed when adding clkout support in commit 8c229ab6
("rtc: pcf85063: Add pcf85063 clkout control to common clock framework")

Signed-off-by: default avatarAlexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220725071919.25342-1-alexander.stein@ew.tq-group.com
parent 28303201

Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt

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* NXP PCF85063 Real Time Clock



Required properties:

- compatible: Should one of contain:

	"nxp,pca85073a",

	"nxp,pcf85063",

	"nxp,pcf85063a",

	"nxp,pcf85063tp",

	"microcrystal,rv8263"

- reg: I2C address for chip.



Optional property:

- quartz-load-femtofarads: The capacitive load of the quartz(x-tal),

  expressed in femto Farad (fF). Valid values are 7000 and 12500.

  Default value (if no value is specified) is 7000fF.



Optional child node:

- clock: Provide this if the square wave pin is used as boot-enabled fixed clock.



Example:



pcf85063: rtc@51 {

	compatible = "nxp,pcf85063";

	reg = <0x51>;

	quartz-load-femtofarads = <12500>;



		clock {

			compatible = "fixed-clock";

			#clock-cells = <0>;

			clock-frequency = <32768>;

		};

};

Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/rtc/nxp,pcf85063.yaml#

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



title: NXP PCF85063 Real Time Clock



maintainers:

  - Alexander Stein <alexander.stein@ew.tq-group.com>



properties:

  compatible:

    enum:

      - microcrystal,rv8263

      - nxp,pcf85063

      - nxp,pcf85063a

      - nxp,pcf85063tp

      - nxp,pca85073a



  reg:

    maxItems: 1



  "#clock-cells":

    const: 0



  clock-output-names:

    maxItems: 1



  interrupts:

    maxItems: 1



  quartz-load-femtofarads:

    description:

      The capacitive load of the quartz(x-tal).

    enum: [7000, 12500]

    default: 7000



  clock:

    $ref: /schemas/clock/fixed-clock.yaml

    description:

      Provide this if the square wave pin is used as boot-enabled

      fixed clock.



  wakeup-source: true



allOf:

  - $ref: rtc.yaml#

  - if:

      properties:

        compatible:

          contains:

            enum:

              - microcrystal,rv8263

    then:

      properties:

        quartz-load-femtofarads: false

  - if:

      properties:

        compatible:

          contains:

            enum:

              - nxp,pcf85063

    then:

      properties:

        quartz-load-femtofarads:

          const: 7000



required:

  - compatible

  - reg



additionalProperties: false



examples:

  - |

    i2c {

        #address-cells = <1>;

        #size-cells = <0>;



        rtc@51 {

          compatible = "nxp,pcf85063a";

          reg = <0x51>;

          quartz-load-femtofarads = <12500>;



          clock {

            compatible = "fixed-clock";

            #clock-cells = <0>;

            clock-frequency = <32768>;

          };

        };

      };