linux-kernel - [PATCH 0/5] coresight: Add Coresight Trace NOC driver

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Message-ID: <20250220-trace-noc-driver-v1-0-15d78bd48e12@quicinc.com>
Date: Thu, 20 Feb 2025 17:41:20 +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>,
        "Alexander
 Shishkin" <alexander.shishkin@...ux.intel.com>
CC: <kernel@...cinc.com>, <linux-kernel@...r.kernel.org>,
        <coresight@...ts.linaro.org>, <linux-arm-kernel@...ts.infradead.org>,
        Yuanfang Zhang <quic_yuanfang@...cinc.com>
Subject: [PATCH 0/5] coresight: Add Coresight Trace NOC driver

The Trace NoC is an integration hierarchy which is a replacement of
Dragonlink configuration. It brings together debug component like TPDA,
funnel and interconnect Trace Noc which collects trace from subsystems
and transfers to QDSS sink.

Compared to DL, it has the following advantages:
1. Reduce wires between subsystems.
2. Continue cleaning the infrastructure.
3. Reduce Data overhead by transporting raw data from source to target.

    +--------------+                                         +-------------+     
    | SDCC5 TPDM   |                                         |  SDCC5 TPDM |     
    +--------------+                                         +-------------+     
           |                                                        |            
           |                                                        |            
+----------|-------------------+                                    |            
|          v                   |                                    |            
|  +----v----+     Dragon Link |                                    v            
|  |DLNT TPDA|     North       |                         +----------------------+
|  +---------+                 |                         |    TRACE NOC AG      |
|       |                      |                         |                      |
|       v-------------+        |                         +----------------------+
|                     |        |                                   |             
|              +------v-----+  |                                   |             
|              | DLNT Funnel|  |                                   |             
|              +------------+  |                                   |             
|                   |          |                                   |             
+-------------------|----------+                                   |             
              <-----+                                              |             
             |                                                     |             
             |                                                     |             
             v                                                     v             
    +----------------+                                      +---------------+    
    |     QDSS       |                                      |    QDSS       |    
    +----------------+                                      +---------------+
    

Signed-off-by: Yuanfang Zhang <quic_yuanfang@...cinc.com>
---
Yuanfang Zhang (5):
      dt-bindings: arm: Add Coresight device Trace NOC definition
      coresight: add coresight Trace NOC driver
      coresight-tnoc: add nodes to configure flush
      coresight-tnoc: add node to configure flag type
      coresight-tnoc: add nodes to configure freq packet

 .../bindings/arm/qcom,coresight-tnoc.yaml          | 107 ++++++
 drivers/hwtracing/coresight/Kconfig                |  10 +
 drivers/hwtracing/coresight/Makefile               |   1 +
 drivers/hwtracing/coresight/coresight-tnoc.c       | 401 +++++++++++++++++++++
 drivers/hwtracing/coresight/coresight-tnoc.h       |  57 +++
 5 files changed, 576 insertions(+)
---
base-commit: 92514ef226f511f2ca1fb1b8752966097518edc0
change-id: 20250212-trace-noc-driver-9e75d78114fa

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