[PATCH v3 20/31] coresight: cti: Register PM notifier after data initialization

[Leo Yan]

On Fri, Oct 03, 2025 at 10:38:24AM +0100, Mike Leach wrote:
> Hi Leo,
> 
> The CTI PM code was initially set up before the CTI was a helper device.
> 
> If the core bound CTIs, which are helpers to the core bound ETMs, are
> disabled as part of the path disable helpers, then I think the CTI
> specific PM code might be redundant.

> If it is not, then should this not  hook into the generic PM code in
> coresight-core.c?

Correct, CTI devices will be managed as a part of path in
coresight-core.c (See patches 26 and 31).

However, we still need cti_pm_setup() - when a CPU bound CTI is enabled
via CTI's sysfs interface, in this case, no path is enabled but purely
CTI device is enabled.

A side topic not related to this series, I am curious if we can remove
the enable/disable knobs in coresight-cti-sysfs.c, then CTI will only
work as helper. This can significantly simplify the CTI driver.

Thanks,
Leo