Per Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt. This IP block can be used for sampling the PC of any given CPU, which is useful in certain panic scenarios where you can't get the CPU to stop cleanly (e.g., hard lockup). Reviewed-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: Chen-Yu Tsai <wenst@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Brian Norris <briannorris@chromium.org> Link: https://lore.kernel.org/r/20210908111337.v2.3.Ibc87b4785709543c998cc852c1edaeb7a08edf5c@changeid Signed-off-by: Heiko Stuebner <heiko@sntech.de> |
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