ingenic,rtc.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/rtc/ingenic,rtc.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Ingenic SoCs Real-Time Clock
  8
  9maintainers:
 10  - Paul Cercueil <paul@crapouillou.net>
 11
 12allOf:
 13  - $ref: rtc.yaml#
 14  - if:
 15      not:
 16        properties:
 17          compatible:
 18            contains:
 19              enum:
 20                - ingenic,jz4770-rtc
 21                - ingenic,jz4780-rtc
 22    then:
 23      properties:
 24        "#clock-cells": false
 25
 26properties:
 27  compatible:
 28    oneOf:
 29      - enum:
 30          - ingenic,jz4740-rtc
 31          - ingenic,jz4760-rtc
 32      - items:
 33          - const: ingenic,jz4725b-rtc
 34          - const: ingenic,jz4740-rtc
 35      - items:
 36          - enum:
 37              - ingenic,jz4770-rtc
 38              - ingenic,jz4780-rtc
 39          - const: ingenic,jz4760-rtc
 40
 41  reg:
 42    maxItems: 1
 43
 44  interrupts:
 45    maxItems: 1
 46
 47  clocks:
 48    maxItems: 1
 49
 50  clock-names:
 51    const: rtc
 52
 53  "#clock-cells":
 54    const: 0
 55
 56  system-power-controller:
 57    description: |
 58      Indicates that the RTC is responsible for powering OFF
 59      the system.
 60    type: boolean
 61
 62  ingenic,reset-pin-assert-time-ms:
 63    minimum: 0
 64    maximum: 125
 65    default: 60
 66    description: |
 67      Reset pin low-level assertion time after wakeup
 68      (assuming RTC clock at 32 kHz)
 69
 70  ingenic,min-wakeup-pin-assert-time-ms:
 71    minimum: 0
 72    maximum: 2000
 73    default: 100
 74    description: |
 75      Minimum wakeup pin assertion time
 76      (assuming RTC clock at 32 kHz)
 77
 78required:
 79  - compatible
 80  - reg
 81  - interrupts
 82  - clocks
 83  - clock-names
 84
 85unevaluatedProperties: false
 86
 87examples:
 88  - |
 89    #include <dt-bindings/clock/ingenic,jz4740-cgu.h>
 90    rtc_dev: rtc@10003000 {
 91      compatible = "ingenic,jz4740-rtc";
 92      reg = <0x10003000 0x40>;
 93
 94      interrupt-parent = <&intc>;
 95      interrupts = <15>;
 96
 97      clocks = <&cgu JZ4740_CLK_RTC>;
 98      clock-names = "rtc";
 99    };
100
101  - |
102    #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
103    rtc: rtc@10003000 {
104      compatible = "ingenic,jz4780-rtc", "ingenic,jz4760-rtc";
105      reg = <0x10003000 0x4c>;
106
107      interrupt-parent = <&intc>;
108      interrupts = <32>;
109
110      clocks = <&cgu JZ4780_CLK_RTCLK>;
111      clock-names = "rtc";
112
113      #clock-cells = <0>;
114    };