| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU) |
| 8 | |
| 9 | maintainers: |
| 10 | - Will Deacon <will@kernel.org> |
| 11 | |
| 12 | description: |
| 13 | ARMv8.2 introduces the optional Statistical Profiling Extension for collecting |
| 14 | performance sample data using an in-memory trace buffer. |
| 15 | |
| 16 | properties: |
| 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 | |
| 27 | additionalProperties: false |
| 28 | |
| 29 | required: |
| 30 | - compatible |
| 31 | - interrupts |
| 32 | |
| 33 | examples: |
| 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 | }; |