* Andy Shevchenko <andriy.shevche...@linux.intel.com> [200910 09:27]: > +Cc: Tony, let me add Tony to the discussion. > > On Thu, Sep 10, 2020 at 09:35:27AM +0200, Johan Hovold wrote: > > And what about power management > > which was the reason for wanting this on OMAP in the first place; tty > > core never calls shutdown() for a console port, not even when it's been > > detached using the new interface. > > That is interesting... Tony, do we have OMAP case working because of luck?
8250_omap won't do anything unless autosuspend_timeout is configured for the uart(s). If configured, then the 8250_omap will idle when console is detached and the PM runtime usage count held by console is decremented, and the configured autosuspend_timeout expires. The console is still kept open by getty, so I don't see why shutdown() would be called for the console port. But maybe I don't follow what you're concerned about, let me know if you want me to check something :) Regards, Tony
