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| author | Mao Jinlong <quic_jinlmao@quicinc.com> | 2023-12-09 23:26:28 -0800 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2024-01-09 10:56:18 -0600 |
| commit | 76156d06769b20fed37d09b505808a74433b5e55 (patch) | |
| tree | f120e8f7e7d2792ab1e5b87d322f16cad40d0559 | |
| parent | 30e0bbf50a704750d86c986744b7fb1e6f4c3c1d (diff) | |
| download | linux-76156d06769b20fed37d09b505808a74433b5e55.tar.gz | |
dt-bindings: arm: Add remote etm dt-binding
Remote ETM(Embedded Trace Macrocell) is to capture information of
the executed processor instructions of remote processors like modem.
Add new coresight-remote-etm.yaml file describing the bindings
required to define coresight remote etm in the device trees.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
Link: https://lore.kernel.org/r/20231210072633.4243-2-quic_jinlmao@quicinc.com
Signed-off-by: Rob Herring <robh@kernel.org>
| -rw-r--r-- | Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml new file mode 100644 index 00000000000000..4fd5752978cd03 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/qcom,coresight-remote-etm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Coresight Remote ETM(Embedded Trace Macrocell) + +maintainers: + - Jinlong Mao <quic_jinlmao@quicinc.com> + - Tao Zhang <quic_taozha@quicinc.com> + +description: + Support for ETM trace collection on remote processor using coresight + framework. Enabling this will allow turning on ETM tracing on remote + processor like modem processor via sysfs and collecting the trace + via coresight TMC sinks. + +properties: + compatible: + const: qcom,coresight-remote-etm + + out-ports: + $ref: /schemas/graph.yaml#/properties/ports + additionalProperties: false + + properties: + port: + description: Output connection to the CoreSight Trace bus. + $ref: /schemas/graph.yaml#/properties/port + +required: + - compatible + - out-ports + +additionalProperties: false + +examples: + - | + etm { + compatible = "qcom,coresight-remote-etm"; + + out-ports { + port { + modem_etm0_out_funnel_modem: endpoint { + remote-endpoint = <&funnel_modem_in_modem_etm0>; + }; + }; + }; + }; +... |