Since before there have no platforms use static funnel in mainline kernel (though maybe some in-house SoC has used it but didn't upstream for mainline kernel yet so we don't be aware for it), when enable CoreSight DT binding for hikey960, we found the SoC uses the static funnel in the link path and but it's not supported in CoreSight funnel driver.
When support static funnel it's found the DT binding compatible string doesn't follow the same fashion between replicator and funnel; so the first two patches are firstly to refine the replicator DT binding and correspondingly, change the replicator driver to support new DT binding compatible. Patch 0003 is to update DT documentation to support static funnel (we call it as non-configurable funnel in documentation) and unify the compatible string with the same fashion for replicator and funnel. Patch 0004 is to support the static funnel in the CoreSight funnel driver. This patch set has been rebased on CoreSight next branch [1] with latest commit d5d246a56af0 ("coresight: Merge the static and dynamic replicator drivers") and tested on Hikey960/Hikey with perf commands: Hikey960: # perf record -e cs_etm/@ec033000.etr/ --per-thread ./main # perf report --tui Hikey: # perf record -e cs_etm/@f6404000.etr/ --per-thread uname # perf report --tui P.s. in this version, Hikey960 CoreSight DT binding has not been included and will be sent out separately. [1] https://git.linaro.org/kernel/coresight.git/log/?h=next == Changes for v4 == * Consolidate the DT binding compatible strings for replicator and funnel (Mathieu). * Changed replicator driver to support new compatible string. Leo Yan (4): dt-bindings: arm: coresight: Add new compatible for static replicator coresight: replicator: Add new device id for static replicator dt-bindings: arm: coresight: Unify funnel DT binding coresight: funnel: Support static funnel .../devicetree/bindings/arm/coresight.txt | 60 +++++++++- .../hwtracing/coresight/coresight-funnel.c | 112 +++++++++++++----- .../coresight/coresight-replicator.c | 3 +- 3 files changed, 141 insertions(+), 34 deletions(-) -- 2.17.1