| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/perf/spe-pmu.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU) |
| |
| maintainers: |
| - Will Deacon <will@kernel.org> |
| |
| description: |
| ARMv8.2 introduces the optional Statistical Profiling Extension for collecting |
| performance sample data using an in-memory trace buffer. |
| |
| properties: |
| compatible: |
| const: arm,statistical-profiling-extension-v1 |
| |
| interrupts: |
| maxItems: 1 |
| description: | |
| The PPI to signal SPE events. For heterogeneous systems where SPE is only |
| supported on a subset of the CPUs, please consult the arm,gic-v3 binding |
| for details on describing a PPI partition. |
| |
| additionalProperties: false |
| |
| required: |
| - compatible |
| - interrupts |
| |
| examples: |
| - | |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| |
| spe-pmu { |
| compatible = "arm,statistical-profiling-extension-v1"; |
| interrupts = <GIC_PPI 5 IRQ_TYPE_LEVEL_HIGH>; |
| }; |
