From: Suzuki K Poulose suzuki.poulose@arm.com
Document the device tree bindings for Trace Buffer Extension (TRBE).
Cc: Anshuman Khandual anshuman.khandual@arm.com Cc: Mathieu Poirier mathieu.poirier@linaro.org Cc: Rob Herring robh@kernel.org Cc: devicetree@vger.kernel.org Signed-off-by: Suzuki K Poulose suzuki.poulose@arm.com Signed-off-by: Anshuman Khandual anshuman.khandual@arm.com --- Documentation/devicetree/bindings/arm/trbe.yaml | 46 +++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/trbe.yaml
diff --git a/Documentation/devicetree/bindings/arm/trbe.yaml b/Documentation/devicetree/bindings/arm/trbe.yaml new file mode 100644 index 0000000..2258595 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/trbe.yaml @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause +# Copyright 2021, Arm Ltd +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/arm/trbe.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: ARM Trace Buffer Extensions + +maintainers: + - Anshuman Khandual anshuman.khandual@arm.com + +description: | + Description of TRBE hw + +properties: + $nodename: + pattern: "trbe" + compatible: + items: + - const: arm,trace-buffer-extension + + interrupts: + description: | + Exactly 1 PPI must be listed. For heterogeneous systems where + TRBE is only supported on a subset of the CPUs, please consult + the arm,gic-v3 binding for details on describing a PPI partition. + maxItems: 1 + +required: + - compatible + - interrupts + +additionalProperties: false + + +examples: + + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + + trbe { + compatible = "arm,trace-buffer-extension"; + interrupts = <GIC_PPI 15 IRQ_TYPE_LEVEL_HIGH>; + }; +...