[PATCH v9 2/2] coresight: add coresight Trace Network On Chip driver

[Yuanfang Zhang]

On 6/11/2025 6:09 PM, Leo Yan wrote:
> On Wed, Jun 11, 2025 at 04:59:47PM +0800, Yuanfang Zhang wrote:
>> Add a driver to support Coresight device Trace Network On Chip (TNOC),
>> which is an integration hierarchy integrating functionalities of TPDA
>> and funnels. It aggregates the trace and transports to coresight trace
>> bus.
>>
>> Compared to current configuration, 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.
>>
>>   +------------------------+                +-------------------------+
>>   | Video Subsystem        |                |Video Subsystem          |
>>   |       +-------------+  |                |       +------------+    |
>>   |       | Video TPDM  |  |                |       | Video TPDM |    |
>>   |       +-------------+  |                |       +------------+    |
>>   |            |           |                |              |          |
>>   |            v           |                |              v          |
>>   |   +---------------+    |                |        +-----------+    |
>>   |   | Video funnel  |    |                |        |Video TNOC |    |
>>   |   +---------------+    |                |        +-----------+    |
>>   +------------|-----------+                +------------|------------+
>>                |                                         |
>>                v-----+                                   |
>> +--------------------|---------+                         |
>> |  Multimedia        v         |                         |
>> |  Subsystem   +--------+      |                         |
>> |              |  TPDA  |      |                         v
>> |              +----|---+      |              +---------------------+
>> |                   |          |              |   Aggregator  TNOC  |
>> |                   |          |              +----------|----------+
>> |                   +--        |                         |
>> |                     |        |                         |
>> |                     |        |                         |
>> |              +------v-----+  |                         |
>> |              |  Funnel    |  |                         |
>> |              +------------+  |                         |
>> +----------------|-------------+                         |
>>                  |                                       |
>>                  v                                       v
>>       +--------------------+                    +------------------+
>>       |   Coresight Sink   |                    |  Coresight Sink  |
>>       +--------------------+                    +------------------+
>>
>>        Current Configuration                            TNOC
>>
>> Signed-off-by: Yuanfang Zhang <quic_yuanfang at quicinc.com>
> 
> I observed a merging conflict. I would suggest you sticking to the
> coresight next branch for CoreSight related upstreaming. Please
> rebase this patch on it.
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git
> branch: next
> 
> I also verified this patch with static checker smatch. With rebasing:
> 
> Reviewed-by: Leo Yan <leo.yan at arm.com>

Done in next patch.