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

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

title: Loongson Real-Time Clock

description:
  The Loongson family chips use an on-chip counter 0 (Time Of Year
  counter) as the RTC.

maintainers:
  - Binbin Zhou <zhoubinbin@loongson.cn>

allOf:
  - $ref: rtc.yaml#

properties:
  compatible:
    oneOf:
      - enum:
          - loongson,ls1b-rtc
          - loongson,ls1c-rtc
          - loongson,ls7a-rtc
          - loongson,ls2k1000-rtc
      - items:
          - enum:
              - loongson,ls2k2000-rtc
              - loongson,ls2k0500-rtc
          - const: loongson,ls7a-rtc

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

required:
  - compatible
  - reg

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>

    rtc@1fe27800 {
        compatible = "loongson,ls2k1000-rtc";
        reg = <0x1fe27800 0x100>;

        interrupt-parent = <&liointc1>;
        interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
    };

...