xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/rtc/ingenic,rtc.yaml

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

title: Ingenic SoCs Real-Time Clock

maintainers:
  - Paul Cercueil <paul@crapouillou.net>

allOf:
  - $ref: rtc.yaml#
  - if:
      not:
        properties:
          compatible:
            contains:
              enum:
                - ingenic,jz4770-rtc
                - ingenic,jz4780-rtc
    then:
      properties:
        "#clock-cells": false

properties:
  compatible:
    oneOf:
      - enum:
          - ingenic,jz4740-rtc
          - ingenic,jz4760-rtc
      - items:
          - const: ingenic,jz4725b-rtc
          - const: ingenic,jz4740-rtc
      - items:
          - enum:
              - ingenic,jz4770-rtc
              - ingenic,jz4780-rtc
          - const: ingenic,jz4760-rtc

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    maxItems: 1

  clock-names:
    const: rtc

  "#clock-cells":
    const: 0

  system-power-controller:
    description: |
      Indicates that the RTC is responsible for powering OFF
      the system.
    type: boolean

  ingenic,reset-pin-assert-time-ms:
    minimum: 0
    maximum: 125
    default: 60
    description: |
      Reset pin low-level assertion time after wakeup
      (assuming RTC clock at 32 kHz)

  ingenic,min-wakeup-pin-assert-time-ms:
    minimum: 0
    maximum: 2000
    default: 100
    description: |
      Minimum wakeup pin assertion time
      (assuming RTC clock at 32 kHz)

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/ingenic,jz4740-cgu.h>
    rtc_dev: rtc@10003000 {
      compatible = "ingenic,jz4740-rtc";
      reg = <0x10003000 0x40>;

      interrupt-parent = <&intc>;
      interrupts = <15>;

      clocks = <&cgu JZ4740_CLK_RTC>;
      clock-names = "rtc";
    };

  - |
    #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
    rtc: rtc@10003000 {
      compatible = "ingenic,jz4780-rtc", "ingenic,jz4760-rtc";
      reg = <0x10003000 0x4c>;

      interrupt-parent = <&intc>;
      interrupts = <32>;

      clocks = <&cgu JZ4780_CLK_RTCLK>;
      clock-names = "rtc";

      #clock-cells = <0>;
    };