Date: Fri, 30 Sep 2022 21:02:58 +0200 From: =?utf-8?Q?Klaus_K=C3=BCchemann?= <maciphone2@googlemail.com> To: Mark Millard <marklmi@yahoo.com>, bob prohaska <fbsd@www.zefox.net>, freebsd-arm@freebsd.org Subject: Re: u-boot debug, was: Re: U-boot on RPI3, sees disk but won't boot it Message-ID: <A2D394A3-8382-4EB2-A697-8A3D5F2687A2@googlemail.com> In-Reply-To: <8CE490A2-B512-4170-95BC-D0584F2B254A@yahoo.com> References: <A8C2BA4E-4520-4B34-9614-DDC4D8BEB097@yahoo.com> <6AA65AE6-41F1-405F-A592-7D641EA4C9CF@yahoo.com> <E3A1C678-8C47-4283-9F9F-4C9011DB8A2B@yahoo.com> <20220929054120.GA77803@www.zefox.net> <D7A62820-4928-49F0-8387-C1E6D998B121@yahoo.com> <ABFBD0E6-8A9B-4C99-84DF-BF398F23678A@yahoo.com> <20220929151926.GA80020@www.zefox.net> <F316420B-C7AF-4131-9734-06117FFE212D@yahoo.com> <20220929170927.GB80020@www.zefox.net> <6C5019EC-B4A8-448F-9A85-4A98BC46F7DD@yahoo.com> <20220930002742.GA81169@www.zefox.net> <7A431698-1A8C-44BA-AFA2-EF5BAA69574F@googlemail.com> <924ED901-F9EB-4CFE-8376-1C2653FB6EBE@yahoo.com> <97AB11F6-2F4D-4026-8A96-50FC68B6EF8C@googlemail.com> <ED81813C-6F25-4751-BBCA-BC711684B219@yahoo.com> <5F180C78-BC07-4605-A042-0BEC8A6FD185@googlemail.com> <8CE490A2-B512-4170-95BC-D0584F2B254A@yahoo.com>
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> Am 30.09.2022 um 20:36 schrieb Mark Millard <marklmi@yahoo.com>: >=20 > 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.) >=20 > Manufacturer=20 > Product U-Boot Root Hub > SerialNumber=20 > bind node usb1@1 >=20 > 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=E2=80=99s the internal, thanks for Info . I was absolutely sure from the beginning that this is a 3b-power-issue = (regulator or whatever)=E2=80=A6 I guess you also wrote that. Since my lowest model is 3b+, I never turned on any RPI during this = discussion. >=20 > I've little clue what would interfere with its > operation in this specific way. =46rom reading the logs we end up in line 377 of common/usb_hub.c : 'cannot reset port=E2=80=98 The comment beginning in line 305 indicates that perhaps more attempts = of a reset=20 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=E2=80=99s worth to try = hacking usb_hub.c=20 but it=E2=80=99s better not to call his name so loud again :-) =E2=80=A6 Regards Klaus
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