On 2024/9/10 18:01, Mao Jinlong wrote:
> Some HW has static trace id which cannot be changed via
> software programming. For this case, configure the trace id
> in device tree with "arm,static-trace-id = <xxx>", and
> call coresight_trace_id_get_static_system_id with the trace id value
> in device probe function. The id will be reserved for the HW
> all the time if the device is probed.
>
> Changes since V3:
> 1. Adda new API function
> int coresight_trace_id_get_system_static_id(int trace_id).
> 2. Use the term "static trace id" for these devices where
> the hardware sets a non-programmable trace ID.
>
> Changes since V2:
> 1. Change "trace-id" to "arm,trace-id".
> 2. Add trace id flag for getting preferred id or ODD id.
>
> Changes since V1:
> 1. Add argument to coresight_trace_id_get_system_id for preferred id
> instead of adding new function coresight_trace_id_reserve_system_id.
> 2. Add constraint to trace-id in dt-binding file.
>
> Mao Jinlong (3):
> dt-bindings: arm: Add arm,trace-id for coresight dummy source
> coresight: Add support to get static id for system trace sources
> coresight: dummy: Add static trace id support for dummy source
>
> .../sysfs-bus-coresight-devices-dummy-source | 15 +++++
> .../arm/arm,coresight-dummy-source.yaml | 6 ++
> drivers/hwtracing/coresight/coresight-dummy.c | 59 +++++++++++++++++--
> .../hwtracing/coresight/coresight-platform.c | 26 ++++++++
> .../hwtracing/coresight/coresight-trace-id.c | 38 ++++++++----
> .../hwtracing/coresight/coresight-trace-id.h | 9 +++
> include/linux/coresight.h | 1 +
> 7 files changed, 140 insertions(+), 14 deletions(-)
> create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-dummy-source
Hi Reviewers,
Gentle remainder for the review.
Thanks
Jinlong Mao
>