From: Leo Yan <leo.yan@xxxxxxxxxx> 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. So patches 0001/0002 are two patches to support static funnel, this first patch is to update DT documentation to support static funnel (we call it as non-configurable funnel in documentation); the second patch is to support the static funnel in the CoreSight funnel driver. Credits to Suzuki shared code for CoreSight replicator refactoring, patches 0001/0002 heavily follows up the same fashion in Suzuki's shared code. Patch 0003 is the DT binding for CoreSight enabling on Hikey960, and it's the first consumer for use static funnel binding. This patch set has been tested on Hikey960 with perf command for trace data recording and decoding with below commands: # perf record -e cs_etm/@20010000.etf/ --per-thread ./main # perf report --tui Leo Yan (2): dt-bindings: arm: coresight: Support non-configurable funnel coresight: funnel: Support static funnel Wanglai Shi (1): arm64: dts: hi3660: Add CoreSight support .../devicetree/bindings/arm/coresight.txt | 45 +- .../boot/dts/hisilicon/hi3660-coresight.dtsi | 456 ++++++++++++++++++ arch/arm64/boot/dts/hisilicon/hi3660.dtsi | 2 + .../hwtracing/coresight/coresight-funnel.c | 112 +++-- 4 files changed, 585 insertions(+), 30 deletions(-) create mode 100644 arch/arm64/boot/dts/hisilicon/hi3660-coresight.dtsi -- 2.17.1
