[PATCH v4 0/3] add sysfs nodes to configure TPDA's registers

[Jie Gan]

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 V4:
1. Document sysfs nodes with correct kernel version and date.
Link to V3 - https://lore.kernel.org/linux-arm-kernel/20250827105545.7140-1-jie.gan@oss.qualcomm.com/

Changes in V3:
1. Optimizing codes according to James's comment.
Link to V2 - https://lore.kernel.org/all/20250827042042.6786-1-jie.gan@oss.qualcomm.com/

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@oss.qualcomm.com/

Signed-off-by: Jie Gan <jie.gan at oss.qualcomm.com>
---
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

 .../ABI/testing/sysfs-bus-coresight-devices-tpda   |  50 ++++
 drivers/hwtracing/coresight/coresight-tpda.c       | 278 +++++++++++++++++++++
 drivers/hwtracing/coresight/coresight-tpda.h       |  33 ++-
 3 files changed, 360 insertions(+), 1 deletion(-)
---
base-commit: 8fec172c82c2b5f6f8e47ab837c1dc91ee3d1b87
change-id: 20251028-configure_tpda_reg-f3396f97f9a1

Best regards,
-- 
Jie Gan <jie.gan at oss.qualcomm.com>