trbe.yaml

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    1 # SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
    2 # Copyright 2021, Arm Ltd
    3 %YAML 1.2
    4 ---
    5 $id: "http://devicetree.org/schemas/arm/trbe.yaml#"
    6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    7 
    8 title: ARM Trace Buffer Extensions
    9 
   10 maintainers:
   11   - Anshuman Khandual <anshuman.khandual@arm.com>
   12 
   13 description: |
   14   Arm Trace Buffer Extension (TRBE) is a per CPU component
   15   for storing trace generated on the CPU to memory. It is
   16   accessed via CPU system registers. The software can verify
   17   if it is permitted to use the component by checking the
   18   TRBIDR register.
   19 
   20 properties:
   21   $nodename:
   22     const: "trbe"
   23   compatible:
   24     items:
   25       - const: arm,trace-buffer-extension
   26 
   27   interrupts:
   28     description: |
   29        Exactly 1 PPI must be listed. For heterogeneous systems where
   30        TRBE is only supported on a subset of the CPUs, please consult
   31        the arm,gic-v3 binding for details on describing a PPI partition.
   32     maxItems: 1
   33 
   34 required:
   35   - compatible
   36   - interrupts
   37 
   38 additionalProperties: false
   39 
   40 examples:
   41 
   42   - |
   43    #include <dt-bindings/interrupt-controller/arm-gic.h>
   44 
   45    trbe {
   46      compatible = "arm,trace-buffer-extension";
   47      interrupts = <GIC_PPI 15 IRQ_TYPE_LEVEL_HIGH>;
   48    };
   49 ...

Cache object: 664910e44364d4d39db90b3d1f203c27

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sys/contrib/device-tree/Bindings/arm/trbe.yaml