On Tue, Nov 9, 2021 at 2:17 PM Sasha Levin [off-list ref] wrote:

From: Brian Norris <briannorris@chromium.org>

[ Upstream commit 75dccea503b8e176ad044175e891d7bb291b6ba0 ]

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).

I don't understand why this is being backported to -stable. First of
all, it won't work because it's missing dependencies (specifically,
around the RK3399 clock driver). But even if it did, I don't see how
this is a candidate for -stable.

Methinks the AI has gone too far again.

Brian