1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/arm/qcom,coresight-remote-etm.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Qualcomm Coresight Remote ETM(Embedded Trace Macrocell) 8 9maintainers: 10 - Jinlong Mao <quic_jinlmao@quicinc.com> 11 - Tao Zhang <quic_taozha@quicinc.com> 12 13description: 14 Support for ETM trace collection on remote processor using coresight 15 framework. Enabling this will allow turning on ETM tracing on remote 16 processor like modem processor via sysfs and collecting the trace 17 via coresight TMC sinks. 18 19properties: 20 compatible: 21 const: qcom,coresight-remote-etm 22 23 out-ports: 24 $ref: /schemas/graph.yaml#/properties/ports 25 additionalProperties: false 26 27 properties: 28 port: 29 description: Output connection to the CoreSight Trace bus. 30 $ref: /schemas/graph.yaml#/properties/port 31 32required: 33 - compatible 34 - out-ports 35 36additionalProperties: false 37 38examples: 39 - | 40 etm { 41 compatible = "qcom,coresight-remote-etm"; 42 43 out-ports { 44 port { 45 modem_etm0_out_funnel_modem: endpoint { 46 remote-endpoint = <&funnel_modem_in_modem_etm0>; 47 }; 48 }; 49 }; 50 }; 51... 52