Documentation/devicetree/bindings/watchdog/arm,twd-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/arm,twd-wdt.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: ARM Timer-Watchdog Watchdog
   8
   9 maintainers:
  10   - Rob Herring <robh@kernel.org>
  11
  12 description:
  13   ARM 11MP, Cortex-A5 and Cortex-A9 are often associated with a per-core
  14   Timer-Watchdog (aka TWD), which provides both a per-cpu local timer
  15   and watchdog.
  16
  17   The TWD is usually attached to a GIC to deliver its two per-processor
  18   interrupts.
  19
  20 properties:
  21   compatible:
  22     enum:
  23       - arm,cortex-a9-twd-wdt
  24       - arm,cortex-a5-twd-wdt
  25       - arm,arm11mp-twd-wdt
  26
  27   reg:
  28     maxItems: 1
  29
  30   interrupts:
  31     maxItems: 1
  32
  33   clocks:
  34     maxItems: 1
  35
  36 required:
  37   - compatible
  38   - reg
  39
  40 additionalProperties: false
  41
  42 examples:
  43   - |
  44     #include <dt-bindings/interrupt-controller/arm-gic.h>
  45
  46     watchdog@2c000620 {
  47             compatible = "arm,arm11mp-twd-wdt";
  48             reg = <0x2c000620 0x20>;
  49             interrupts = <GIC_PPI 14 0xf01>;
  50     };