bindings/watchdog/mediatek,mtk-wdt.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/watchdog/mediatek,mtk-wdt.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: MediaTek SoCs Watchdog timer
   8
   9 maintainers:
  10   - Matthias Brugger <matthias.bgg@gmail.com>
  11
  12 description:
  13   The watchdog supports a pre-timeout interrupt that fires
  14   timeout-sec/2 before the expiry.
  15
  16 allOf:
  17   - $ref: watchdog.yaml#
  18
  19 properties:
  20   compatible:
  21     oneOf:
  22       - enum:
  23           - mediatek,mt2712-wdt
  24           - mediatek,mt6589-wdt
  25           - mediatek,mt6735-wdt
  26           - mediatek,mt6795-wdt
  27           - mediatek,mt7986-wdt
  28           - mediatek,mt7988-wdt
  29           - mediatek,mt8183-wdt
  30           - mediatek,mt8186-wdt
  31           - mediatek,mt8188-wdt
  32           - mediatek,mt8192-wdt
  33           - mediatek,mt8195-wdt
  34       - items:
  35           - enum:
  36               - mediatek,mt2701-wdt
  37               - mediatek,mt6582-wdt
  38               - mediatek,mt6797-wdt
  39               - mediatek,mt7622-wdt
  40               - mediatek,mt7623-wdt
  41               - mediatek,mt7629-wdt
  42               - mediatek,mt8173-wdt
  43               - mediatek,mt8365-wdt
  44               - mediatek,mt8516-wdt
  45           - const: mediatek,mt6589-wdt
  46
  47   reg:
  48     maxItems: 1
  49
  50   interrupts:
  51     items:
  52       - description: Watchdog pre-timeout (bark) interrupt
  53
  54   mediatek,disable-extrst:
  55     description: Disable sending output reset signal
  56     type: boolean
  57
  58   mediatek,reset-by-toprgu:
  59     description: The Top Reset Generation Unit (TOPRGU) generates reset signals
  60       and distributes them to each IP. If present, the watchdog timer will be
  61       reset by TOPRGU once system resets.
  62     type: boolean
  63
  64   '#reset-cells':
  65     const: 1
  66
  67 required:
  68   - compatible
  69   - reg
  70
  71 unevaluatedProperties: false
  72
  73 examples:
  74   - |
  75     #include <dt-bindings/interrupt-controller/arm-gic.h>
  76
  77     soc {
  78         #address-cells = <2>;
  79         #size-cells = <2>;
  80
  81         watchdog: watchdog@10007000 {
  82             compatible = "mediatek,mt8183-wdt";
  83             reg = <0 0x10007000 0 0x100>;
  84             interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_LOW>;
  85             mediatek,disable-extrst;
  86             timeout-sec = <10>;
  87             #reset-cells = <1>;
  88         };
  89     };