linux-kernel - [PATCH v4 0/2] coresight: Add Coresight Trace Network On Chip driver

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Message-ID: <20250415-trace-noc-v4-0-979938fedfd8@quicinc.com>
Date: Tue, 15 Apr 2025 17:25:38 +0800
From: Yuanfang Zhang <quic_yuanfang@...cinc.com>
To: Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach
	<mike.leach@...aro.org>,
        James Clark <james.clark@...aro.org>, Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Alexander Shishkin
	<alexander.shishkin@...ux.intel.com>
CC: <kernel@....qualcomm.com>, <linux-arm-msm@...r.kernel.org>,
        <coresight@...ts.linaro.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Yuanfang Zhang
	<quic_yuanfang@...cinc.com>
Subject: [PATCH v4 0/2] coresight: Add Coresight Trace Network On Chip
 driver

The Trace Network On Chip (TNOC) is an integration hierarchy which is a
hardware component that integrates the functionalities of TPDA and
funnels. It collects trace form subsystems and transfers to coresight
sink.

Signed-off-by: Yuanfang Zhang <quic_yuanfang@...cinc.com>
---
Changes in v4:
- Fix dt_binding warning.
- update mask of trace_noc amba_id.
- Modify driver comments.
- rename TRACE_NOC_SYN_VAL to TRACE_NOC_SYNC_INTERVAL.
- Link to v3: https://lore.kernel.org/r/20250411-trace-noc-v3-0-1f19ddf7699b@quicinc.com

Changes in v3:
- Remove unnecessary sysfs nodes.
- update commit messages.
- Use 'writel' instead of 'write_relaxed' when writing to the register for the last time.
- Add trace_id ops.
- Link to v2: https://lore.kernel.org/r/20250226-trace-noc-driver-v2-0-8afc6584afc5@quicinc.com

Changes in v2:
- Modified the format of DT binging file.
- Fix compile warnings.
- Link to v1: https://lore.kernel.org/r/46643089-b88d-49dc-be05-7bf0bb21f847@quicinc.com

---
Yuanfang Zhang (2):
      dt-bindings: arm: Add device Trace Network On Chip definition
      coresight: add coresight Trace Network On Chip driver

 .../bindings/arm/qcom,coresight-tnoc.yaml          | 111 ++++++++++++
 drivers/hwtracing/coresight/Kconfig                |  13 ++
 drivers/hwtracing/coresight/Makefile               |   1 +
 drivers/hwtracing/coresight/coresight-tnoc.c       | 191 +++++++++++++++++++++
 drivers/hwtracing/coresight/coresight-tnoc.h       |  34 ++++
 5 files changed, 350 insertions(+)
---
base-commit: a2cc6ff5ec8f91bc463fd3b0c26b61166a07eb11
change-id: 20250403-trace-noc-f8286b30408e

Best regards,
-- 
Yuanfang Zhang <quic_yuanfang@...cinc.com>