Re: [PATCH v1 0/3] Add support to configure Coresight Dummy subunit

[Suzuki K Poulose]

On 16/03/2023 03:20, Hao Zhang wrote:
> 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

What is HLOS ?

> some TPDMs, they would be configured in NON-HLOS side, but it's necessary to

What is NON-HLOS ?

> build Coresight path for it to debug. So there need driver to register dummy
> devices as Coresight devices.

Build a path for who to debug ? If this is used by some privileged
software, shouldn't that do all of the work ?

Suzuki

> Commit link:
> https://git.codelinaro.org/clo/linux-kernel/coresight/-/tree/coresight-dummy
>
> 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    | 129 +++++++++++++
>   .../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, 375 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