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
  7title: Freescale i.MX Watchdog Timer (WDT) Controller
  8
  9maintainers:
 10  - Shawn Guo <shawnguo@kernel.org>
 11  - Sascha Hauer <s.hauer@pengutronix.de>
 12  - Fabio Estevam <festevam@gmail.com>
 13
 14properties:
 15  compatible:
 16    oneOf:
 17      - const: fsl,imx21-wdt
 18      - items:
 19          - enum:
 20              - fsl,imx25-wdt
 21              - fsl,imx27-wdt
 22              - fsl,imx31-wdt
 23              - fsl,imx35-wdt
 24              - fsl,imx50-wdt
 25              - fsl,imx51-wdt
 26              - fsl,imx53-wdt
 27              - fsl,imx6q-wdt
 28              - fsl,imx6sl-wdt
 29              - fsl,imx6sll-wdt
 30              - fsl,imx6sx-wdt
 31              - fsl,imx6ul-wdt
 32              - fsl,imx7d-wdt
 33              - fsl,imx8mm-wdt
 34              - fsl,imx8mn-wdt
 35              - fsl,imx8mp-wdt
 36              - fsl,imx8mq-wdt
 37              - fsl,ls1012a-wdt
 38              - fsl,ls1021a-wdt
 39              - fsl,ls1043a-wdt
 40              - fsl,ls1046a-wdt
 41              - fsl,vf610-wdt
 42          - const: fsl,imx21-wdt
 43
 44  reg:
 45    maxItems: 1
 46
 47  interrupts:
 48    maxItems: 1
 49
 50  clocks:
 51    maxItems: 1
 52
 53  big-endian: true
 54
 55  fsl,ext-reset-output:
 56    $ref: /schemas/types.yaml#/definitions/flag
 57    description: |
 58      If present, the watchdog device is configured to assert its
 59      external reset (WDOG_B) instead of issuing a software reset.
 60
 61  fsl,suspend-in-wait:
 62    $ref: /schemas/types.yaml#/definitions/flag
 63    description: |
 64      If present, the watchdog device is suspended in WAIT mode
 65      (Suspend-to-Idle). Only supported on certain devices.
 66
 67required:
 68  - compatible
 69  - interrupts
 70  - reg
 71
 72allOf:
 73  - $ref: watchdog.yaml#
 74  - if:
 75      not:
 76        properties:
 77          compatible:
 78            contains:
 79              enum:
 80                - fsl,imx25-wdt
 81                - fsl,imx35-wdt
 82                - fsl,imx50-wdt
 83                - fsl,imx51-wdt
 84                - fsl,imx53-wdt
 85                - fsl,imx6q-wdt
 86                - fsl,imx6sl-wdt
 87                - fsl,imx6sll-wdt
 88                - fsl,imx6sx-wdt
 89                - fsl,imx6ul-wdt
 90                - fsl,imx7d-wdt
 91                - fsl,imx8mm-wdt
 92                - fsl,imx8mn-wdt
 93                - fsl,imx8mp-wdt
 94                - fsl,imx8mq-wdt
 95                - fsl,vf610-wdt
 96    then:
 97      properties:
 98        fsl,suspend-in-wait: false
 99
100  - if:
101      not:
102        properties:
103          compatible:
104            contains:
105              enum:
106                - fsl,ls1012a-wdt
107                - fsl,ls1021a-wdt
108                - fsl,ls1043a-wdt
109                - fsl,ls1046a-wdt
110    then:
111      properties:
112        big-endian: false
113
114unevaluatedProperties: false
115
116examples:
117  - |
118    #include <dt-bindings/interrupt-controller/arm-gic.h>
119    #include <dt-bindings/clock/imx6qdl-clock.h>
120
121    watchdog@20bc000 {
122        compatible = "fsl,imx21-wdt";
123        reg = <0x020bc000 0x4000>;
124        interrupts = <0 80 IRQ_TYPE_LEVEL_HIGH>;
125        clocks = <&clks IMX6QDL_CLK_IPG>;
126    };
127
128...