Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml

   1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/watchdog/fsl-imx-wdt.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Freescale i.MX Watchdog Timer (WDT) Controller
   8
   9 maintainers:
  10   - Anson Huang <Anson.Huang@nxp.com>
  11
  12 properties:
  13   compatible:
  14     oneOf:
  15       - const: fsl,imx21-wdt
  16       - items:
  17           - enum:
  18               - fsl,imx25-wdt
  19               - fsl,imx27-wdt
  20               - fsl,imx31-wdt
  21               - fsl,imx35-wdt
  22               - fsl,imx50-wdt
  23               - fsl,imx51-wdt
  24               - fsl,imx53-wdt
  25               - fsl,imx6q-wdt
  26               - fsl,imx6sl-wdt
  27               - fsl,imx6sll-wdt
  28               - fsl,imx6sx-wdt
  29               - fsl,imx6ul-wdt
  30               - fsl,imx7d-wdt
  31               - fsl,imx8mm-wdt
  32               - fsl,imx8mn-wdt
  33               - fsl,imx8mp-wdt
  34               - fsl,imx8mq-wdt
  35               - fsl,ls1012a-wdt
  36               - fsl,ls1043a-wdt
  37               - fsl,vf610-wdt
  38           - const: fsl,imx21-wdt
  39
  40   reg:
  41     maxItems: 1
  42
  43   interrupts:
  44     maxItems: 1
  45
  46   clocks:
  47     maxItems: 1
  48
  49   fsl,ext-reset-output:
  50     $ref: /schemas/types.yaml#/definitions/flag
  51     description: |
  52       If present, the watchdog device is configured to assert its
  53       external reset (WDOG_B) instead of issuing a software reset.
  54
  55   fsl,suspend-in-wait:
  56     $ref: /schemas/types.yaml#/definitions/flag
  57     description: |
  58       If present, the watchdog device is suspended in WAIT mode
  59       (Suspend-to-Idle). Only supported on certain devices.
  60
  61 required:
  62   - compatible
  63   - interrupts
  64   - reg
  65
  66 allOf:
  67   - $ref: watchdog.yaml#
  68   - if:
  69       not:
  70         properties:
  71           compatible:
  72             contains:
  73               enum:
  74                 - fsl,imx25-wdt
  75                 - fsl,imx35-wdt
  76                 - fsl,imx50-wdt
  77                 - fsl,imx51-wdt
  78                 - fsl,imx53-wdt
  79                 - fsl,imx6q-wdt
  80                 - fsl,imx6sl-wdt
  81                 - fsl,imx6sll-wdt
  82                 - fsl,imx6sx-wdt
  83                 - fsl,imx6ul-wdt
  84                 - fsl,imx7d-wdt
  85                 - fsl,imx8mm-wdt
  86                 - fsl,imx8mn-wdt
  87                 - fsl,imx8mp-wdt
  88                 - fsl,imx8mq-wdt
  89                 - fsl,vf610-wdt
  90     then:
  91       properties:
  92         fsl,suspend-in-wait: false
  93
  94 unevaluatedProperties: false
  95
  96 examples:
  97   - |
  98     #include <dt-bindings/interrupt-controller/arm-gic.h>
  99     #include <dt-bindings/clock/imx6qdl-clock.h>
 100
 101     watchdog@20bc000 {
 102         compatible = "fsl,imx21-wdt";
 103         reg = <0x020bc000 0x4000>;
 104         interrupts = <0 80 IRQ_TYPE_LEVEL_HIGH>;
 105         clocks = <&clks IMX6QDL_CLK_IPG>;
 106     };
 107
 108 ...