Re: [PATCH] Revert "bus: ti-sysc: Probe for l4_wkup and l4_cfg interconnect devices first"

Andreas Kemnade
2025-03-13T19:21:40Z

Hi Alexander,

Am Thu, 13 Mar 2025 10:47:06 +0100
schrieb "A. Sverdlin" <alexander.sverdlin@siemens.com>:

> From: Alexander Sverdlin <alexander.sverdlin@siemens.com>
>
> This reverts commit 4700a00755fb5a4bb5109128297d6fd2d1272ee6.
>
> It brakes target-module@2b300050 ("ti,sysc-omap2") probe on AM62x in a case
> when minimally-configured system tries to network-boot:
>
brakes or breaks? To unterstand the severity of the issue...

> [ 6.888776] probe of 2b300050.target-module returned 517 after 258 usecs
> [ 17.129637] probe of 2b300050.target-module returned 517 after 708 usecs
> [ 17.137397] platform 2b300050.target-module: deferred probe pending: (reason unknown)
> [ 26.878471] Waiting up to 100 more seconds for network.
>
> Arbitrary 10 deferrals is really not a solution to any problem.

So there is a point where no more probe of anything pending are
triggered and therefore things are not probed?

> Stable mmc enumeration can be achiever by filling /aliases node properly
> (4700a00755fb commit's rationale).
>
yes, it does not look like a clean solution. And we have the
proper aliases node in many places. What I am a bit wondering about is
what kind of sleeping dogs we are going to wake up by this revert. So I
think this should be tested a lot esp. about possible pm issues.

Not every dependency in the sysc probe area is properly defined.

Regards,
Andreas