[PATCH V2 11/11] dts: bindings: Document device tree bindings for Arm TRBE
From: Anshuman Khandual <hidden>
Date: 2021-01-13 04:20:24
Also in:
linux-arm-kernel, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Suzuki K Poulose <suzuki.poulose@arm.com> Document the device tree bindings for Trace Buffer Extension (TRBE). Cc: Anshuman Khandual <redacted> 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 <redacted> --- 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>; + }; +...
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2.7.4