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@quicinc.com --- --- Changes in v2: 1. Modified the format of DT binging file. 2. Fix compile warnings. - Link to v1: https://lore.kernel.org/r/20250221-trace-noc-driver-v1-0-0a23fc643217@quicin...
--- 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 | 116 ++++++ drivers/hwtracing/coresight/Kconfig | 13 + drivers/hwtracing/coresight/Makefile | 1 + drivers/hwtracing/coresight/coresight-tnoc.c | 400 +++++++++++++++++++++ drivers/hwtracing/coresight/coresight-tnoc.h | 57 +++ 5 files changed, 587 insertions(+) --- base-commit: 92514ef226f511f2ca1fb1b8752966097518edc0 change-id: 20250212-trace-noc-driver-9e75d78114fa
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