On Fri, 1 Nov 2024 at 17:36, Chris Adams via arm <arm@xxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Once upon a time, Peter Robinson <pbrobinson@xxxxxxxxx> said: > > Can you clarify this? The "stop at u-boot about 20-30 seconds after > > boot" doesn't make sense, you should be well into the kernel and even > > login after 20-30 seconds, well past U-Boot. Also not sure how PPS on > > a gpio would affect early boot. > > Oh it boots fine, then crashes after about 20-30 seconds back to a > u-boot prompt. IIRC when I hooked up a monitor, I didn't see any kernel > oops, just back to u-boot. > > https://bugzilla.redhat.com/show_bug.cgi?id=2264560 > > It's very weird, and I'm just speculating that the 20-30 seconds is > about how long it takes for the GPS HAT to start sending PPS pulses. Oh yes, I remember that one now. > I need to swap out the SD card for a clean Fedora 41 server image and > see if it still happens (I expect it will since kernel 6.11 on F39 still > does). I was kind of hoping I could reproduce it with the other GPS > HAT, but it doesn't happen there. That's when I thought about the > difference between the two being which GPIO PIN the PPS signal is on > (think I had it backwards before - the one that crashes has PPS on the > default pin, 18, while the one that doesn't has PPS on GPIO pin 4). > > It doesn't make much sense for the GPIO PPS signal to be the issue (even > when the overlay configuring PPS isn't loaded), but... not sure what > else it might be. The only other difference between the two HATs is > that the one on the crashing Pi has an integrated RTC, while the other > one does not. What's the integrated RTC? Does it have an integrated watchdog feature? I wonder if the kernel driver had a update to enable a watchdog or some similar feature on the RTC and it's triggering a reset because something isn't clearing it as the HW is expecting. -- _______________________________________________ arm mailing list -- arm@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to arm-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/arm@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
