This patch series adds support for the Qualcomm CoreSight Interconnect TNOC
(Trace Network On Chip) block, which acts as a CoreSight graph link forwarding
trace data from subsystems to the Aggregator TNOC. Unlike the Aggregator TNOC,
this block does not support aggregation or ATID assignment.

Signed-off-by: Yuanfang Zhang <yuanfang.zhang@oss.qualcomm.com>
---
Changes in v3:
- Add detail for changes in V2.
- Remove '#address-cells' and '#size-cells' properties from in-ports field.
- Fix comment indentation for packet description.
- Link to v2: https://lore.kernel.org/r/20250819-itnoc-v2-0-2d0e6be44e2f@oss.qualcomm.com

Changes in v2:
- Removed the trailing '|' after the description in qcom,coresight-itnoc.yaml.
- Dropped the 'select' section from the YAML file.
- Updated node name to use a more generic naming convention.
- Removed the 'items' property from the compatible field.
- Deleted the description for the reg property.
- Dropped clock-names and adjusted the order of clock-names and clocks.
- Moved additionalProperties to follow the $ref of out-ports.
- Change "atid" type from u32 to int, set it as "-EOPNOTSUPP" for non-AMBA device.
- Link to v1: https://lore.kernel.org/r/20250815-itnoc-v1-0-62c8e4f7ad32@oss.qualcomm.com

---
Yuanfang Zhang (3):
      dt-bindings: arm: qcom: Add Coresight Interconnect TNOC
      coresight-tnoc: add platform driver to support Interconnect TNOC
      coresight-tnoc: Add runtime PM support for Interconnect TNOC

 .../bindings/arm/qcom,coresight-itnoc.yaml         |  90 +++++++++++++
 drivers/hwtracing/coresight/coresight-tnoc.c       | 139 +++++++++++++++++++--
 2 files changed, 216 insertions(+), 13 deletions(-)
---
base-commit: 2b52cf338d39d684a1c6af298e8204902c026aca
change-id: 20250815-itnoc-460273d1b80c

Best regards,
-- 
Yuanfang Zhang <yuanfang.zhang@oss.qualcomm.com>

On Thu, Aug 28, 2025 at 02:27:21AM -0700, Yuanfang Zhang wrote:
> This patch series adds support for the Qualcomm CoreSight Interconnect TNOC
> (Trace Network On Chip) block, which acts as a CoreSight graph link forwarding
> trace data from subsystems to the Aggregator TNOC. Unlike the Aggregator TNOC,
> this block does not support aggregation or ATID assignment.

I tested this series with building and static checker, the result is
good.

I'd highlight that this series is based on my patch series Arm CoreSight
clock refactoring [1] (thanks!). The dependency might be matter when
picking up patches, I would leave this to Suzuki.

Thanks,
Leo

[1] https://lore.kernel.org/linux-arm-kernel/20250731-arm_cs_fix_clock_v4-v6-0-1dfe10bb3f6f@arm.com/