arm,twd-timer.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/timer/arm,twd-timer.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: ARM Timer-Watchdog Timer
    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-timer
   24       - arm,cortex-a5-twd-timer
   25       - arm,arm11mp-twd-timer
   26 
   27   reg:
   28     maxItems: 1
   29 
   30   interrupts:
   31     maxItems: 1
   32 
   33   clocks:
   34     maxItems: 1
   35 
   36   always-on:
   37     description:
   38       If present, the timer is powered through an always-on power domain,
   39       therefore it never loses context.
   40 
   41 required:
   42   - compatible
   43   - reg
   44   - interrupts
   45 
   46 additionalProperties: false
   47 
   48 examples:
   49   - |
   50     #include <dt-bindings/interrupt-controller/arm-gic.h>
   51 
   52     timer@2c000600 {
   53             compatible = "arm,arm11mp-twd-timer";
   54             reg = <0x2c000600 0x20>;
   55             interrupts = <GIC_PPI 13 0xf01>;
   56     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/timer/arm,twd-timer.yaml

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sys/contrib/device-tree/Bindings/timer/arm,twd-timer.yaml