Re: u-boot debug, was: Re: U-boot on RPI3, sees disk but won't boot it
Date: Fri, 30 Sep 2022 19:02:58 UTC
> Am 30.09.2022 um 20:36 schrieb Mark Millard <marklmi@yahoo.com>: > > Which "the"? The Hub in question is internal to the > RPi3B. It also shows up on my RPi3B with no external > hubs involved. (But I've never had the failure mode > occur.) > > Manufacturer > Product U-Boot Root Hub > SerialNumber > bind node usb1@1 > > It is a hub with 5 ports, one associated with the > EtherNet port and 4 for plugging things in. Or, > that is my understanding. :-), I started reading the discussion from the beginning because I missed the Hub-manufacturer in the logs, Now I know it’s the internal, thanks for Info . I was absolutely sure from the beginning that this is a 3b-power-issue (regulator or whatever)… I guess you also wrote that. Since my lowest model is 3b+, I never turned on any RPI during this discussion. > > I've little clue what would interfere with its > operation in this specific way. From reading the logs we end up in line 377 of common/usb_hub.c : 'cannot reset port‘ The comment beginning in line 305 indicates that perhaps more attempts of a reset could work around mysterious power or disconnect issues( although for nVidia not rpi). So by guessing I would say, a code injection of reset retries could perhaps help, I would ask a long year known USB-expert if it’s worth to try hacking usb_hub.c but it’s better not to call his name so loud again :-) … Regards Klaus