Re: [PATCH v4 03/18] i2c: omap: wakeup the controller during suspend() callback

Tony Lindgren
2024-03-08T08:43:40Z

* Thomas Richard <thomas.richard@bootlin.com> [240304 15:36]:
> A device may need the controller up during suspend_noirq() or
> resume_noirq().
> But if the controller is autosuspended, there is no way to wakeup it during
> suspend_noirq() or resume_noirq() because runtime pm is disabled at this
> time.
>
> The suspend() callback wakes up the controller, so it is available until
> its suspend_noirq() callback (pm_runtime_force_suspend()).
> During the resume, it's restored by resume_noirq() callback
> (pm_runtime_force_resume()). Then resume() callback enables autosuspend.

Reviewed-by: Tony Lindgren <tony@atomide.com>