Introduction of Coresight Dummy subunit The Coresight Dummy subunit is for Coresight Dummy component, there are some specific Coresight devices that HLOS don't have permission to access. Such as some TPDMs, they would be configured in NON-HLOS side, but it's necessary to build Coresight path for it to debug. So there need driver to register dummy devices as Coresight devices. Commit link: https://git.codelinaro.org/clo/linux-kernel/coresight/-/tree/coresight-dummy-v2 Changes in V2: 1. Declare dummy_init and dummy_exit as static to fix missing-prototypes warnings. -- kernel test robot <lkp@xxxxxxxxx> 2. Fix the errors of coresight-dummy yaml file. -- Rob Herring <robh@xxxxxxxxxx> Hao Zhang (3): Coresight: Add coresight dummy driver dt-bindings: arm: Add Coresight Dummy Trace YAML schema Documentation: trace: Add documentation for Coresight Dummy Trace .../bindings/arm/qcom,coresight-dummy.yaml | 118 ++++++++++++ .../trace/coresight/coresight-dummy.rst | 58 ++++++ drivers/hwtracing/coresight/Kconfig | 11 ++ drivers/hwtracing/coresight/Makefile | 1 + drivers/hwtracing/coresight/coresight-dummy.c | 176 ++++++++++++++++++ 5 files changed, 364 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-dummy.yaml create mode 100644 Documentation/trace/coresight/coresight-dummy.rst create mode 100644 drivers/hwtracing/coresight/coresight-dummy.c -- 2.17.1
