On 14/01/23 01:27, Mark Brown wrote: > On Fri, Jan 13, 2023 at 11:33:09AM -0600, Pierre-Louis Bossart wrote: > >> I do recall some issues with the codec jacks, where if the card >> registration happens too late the codec might have suspended. But we >> added pm_runtime_resume_and_get in the set_jack_detect callbacks, so >> that was solved. > Right, I would expect that whatever needs the device to be powered on > would be explicitly ensuring that this is done rather than tweaking > timeouts - the timeouts should be more of a performance thing to avoid > bouncing power too much, not a correctness thing. Machine driver probe is executed in parallel with Manager driver probe sequence. Because of it, before completion of all peripherals enumeration across the multiple links, if card registration is completed, codec register writes will fail as Codec device numbers are not assigned. If we understood correctly, as per your suggestion, We shouldn't use any time bounds in machine driver probe sequence and before registering the sound card, need to traverses through all peripheral initialization completion status for all the managers.
