xref: /linux/Documentation/devicetree/bindings/perf/spe-pmu.yaml (revision f777316e52e14059a6a1df45cbf39a93ac49a593) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/perf/spe-pmu.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU)
8
9maintainers:
10  - Will Deacon <will@kernel.org>
11
12description:
13  ARMv8.2 introduces the optional Statistical Profiling Extension for collecting
14  performance sample data using an in-memory trace buffer.
15
16properties:
17  compatible:
18    const: arm,statistical-profiling-extension-v1
19
20  interrupts:
21    maxItems: 1
22    description: |
23      The PPI to signal SPE events. For heterogeneous systems where SPE is only
24      supported on a subset of the CPUs, please consult the arm,gic-v3 binding
25      for details on describing a PPI partition.
26
27additionalProperties: false
28
29required:
30  - compatible
31  - interrupts
32
33examples:
34  - |
35    #include <dt-bindings/interrupt-controller/arm-gic.h>
36
37    spe-pmu {
38        compatible = "arm,statistical-profiling-extension-v1";
39        interrupts = <GIC_PPI 5 IRQ_TYPE_LEVEL_HIGH>;
40    };
41