[PATCH v1 0/3] add sysfs nodes to configure TPDA's registers

Jie Gan jie.gan at oss.qualcomm.com
Tue Aug 26 00:01:47 PDT 2025


Patchset 1 introduces configuration of the cross-trigger registers with
appropriate values to enable proper generation of cross-trigger packets.

Patchset 2 introduces a function 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.

Tao Zhang (3):
  coresight: tpda: Add sysfs node for tpda cross-trigger configuration
  coresight: tpda: add function 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  | 301 ++++++++++++++++++
 drivers/hwtracing/coresight/coresight-tpda.h  |  29 ++
 3 files changed, 380 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-tpda

-- 
2.34.1




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