Patchset 1 introduces configuration of the cross-trigger registers with appropriate values to enable proper generation of cross-trigger packets. Patchset 2 introduces a logic to configure the TPDA_SYNCR register, which determines the frequency of ASYNC packet generation. These packets assist userspace tools in accurately identifying each valid packet. Patchset 3 introduces a sysfs node to initiate a flush request for the specific port, forcing the data to synchronize and be transmitted to the sink device. Changes in V2: 1. Refactoring the code based on James's comment for optimization. Link to V1 - https://lore.kernel.org/all/20250826070150.5603-1-jie.gan@xxxxxxxxxxxxxxxx/ Tao Zhang (3): coresight: tpda: add sysfs nodes for tpda cross-trigger configuration coresight: tpda: add logic to configure TPDA_SYNCR register coresight: tpda: add sysfs node to flush specific port .../testing/sysfs-bus-coresight-devices-tpda | 50 ++++ drivers/hwtracing/coresight/coresight-tpda.c | 276 ++++++++++++++++++ drivers/hwtracing/coresight/coresight-tpda.h | 35 ++- 3 files changed, 360 insertions(+), 1 deletion(-) create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-tpda -- 2.34.1
