# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/rtc/sii,s35390a.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: S-35390A 2-wire real-time clock

maintainers:
  - Markus Probst <markus.probst@posteo.de>

description:
  The S-35390A is a CMOS 2-wire real-time clock IC which operates with the
  very low current consumption in the wide range of operation voltage.

allOf:
  - $ref: rtc.yaml#

properties:
  compatible:
    const: sii,s35390a

  reg:
    maxItems: 1

  interrupts:
    minItems: 1
    maxItems: 2
    description: Supports up to 2 interrupt lines via the INT1 and INT2 pins.

  interrupt-names:
    minItems: 1
    maxItems: 2
    items:
      enum:
        - int1
        - int2

  wakeup-parent: true

  wakeup-source: true

  "#clock-cells":
    const: 1

patternProperties:
  "^pins":
    type: object
    additionalProperties: false

    patternProperties:
      "-pins$":
        $ref: /schemas/pinctrl/pinmux-node.yaml#
        additionalProperties: false

        properties:
          pins:
            minItems: 1
            items:
              enum:
                - int1
                - int2

          function:
            description: |
              Pin function:
              - ignore:  Preserve the previous state.
              - disable: Disable pin output.
              - wakeup:  Output wakes up the system.
              - clock:   Output clock pulse.
              - pmin1:   Minute periodical output with 50% duty.
              - pmin2:   Minute periodical output L for 7.81 ms.
                         Can only be used with pin int1.
            enum:
              - ignore
              - disable
              - wakeup
              - clock
              - pmin1
              - pmin2

        required:
          - pins
          - function

required:
  - compatible
  - reg

unevaluatedProperties: false

examples:
  - |
    i2c {
        #address-cells = <1>;
        #size-cells = <0>;

        rtc@30 {
            compatible = "sii,s35390a";
            reg = <0x30>;
            pinctrl-0 = <&rtc_pins_default>;
            pinctrl-names = "default";

            interrupt-names = "int1";
            interrupts = <23>;

            rtc_pins_default: pins {
              int1-pins {
                pins = "int1";
                function = "wakeup";
              };
              int2-pins {
                pins = "int2";
                function = "disable";
              };
            };
        };
    };