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b25bccb697
Convert the Arm Statisical Profiling Extension (SPE) binding to DT schema. Not much to see here, basically just the announcement that SPE is integrated on the system level and where the IRQ is routed to. Move it into the more suitable perf/ directory on the way. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220506140533.3566431-3-andre.przywara@arm.com
41 lines
1.1 KiB
YAML
41 lines
1.1 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/perf/spe-pmu.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU)
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maintainers:
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- Will Deacon <will@kernel.org>
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description:
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ARMv8.2 introduces the optional Statistical Profiling Extension for collecting
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performance sample data using an in-memory trace buffer.
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properties:
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compatible:
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const: arm,statistical-profiling-extension-v1
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interrupts:
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maxItems: 1
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description: |
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The PPI to signal SPE events. For heterogeneous systems where SPE is only
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supported on a subset of the CPUs, please consult the arm,gic-v3 binding
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for details on describing a PPI partition.
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additionalProperties: false
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required:
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- compatible
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- interrupts
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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spe-pmu {
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compatible = "arm,statistical-profiling-extension-v1";
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interrupts = <GIC_PPI 5 IRQ_TYPE_LEVEL_HIGH>;
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};
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