On 22/05/2025 09:07, 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:
Reduce wires between subsystems.
Continue cleaning the infrastructure.
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 TNOCSigned-off-by: Yuanfang Zhang quic_yuanfang@quicinc.com
+static int trace_noc_init_default_data(struct trace_noc_drvdata *drvdata) +{
- int atid;
- atid = coresight_trace_id_get_system_id();
- if (atid < 0)
return atid;- drvdata->atid = atid;
Do you need to expose this via sysfs ? Otherwise, how can you map a trace to a TNOC at decoding ?
Suzuki