Date: Thu, 12 Jul 2018 13:39:08 +0200 From: "Ronald Klop" <ronald-lists@klop.ws> To: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, "Wis Macomson" <Wis@teraspeed.com> Subject: Re: RPI3B+ does not reboot Message-ID: <op.zl1enivhkndu52@klop.ws> In-Reply-To: <BY2PR16MB0149B3B639A5664E8CAF1870BD430@BY2PR16MB0149.namprd16.prod.outlook.com> References: <BY2PR16MB0149B3B639A5664E8CAF1870BD430@BY2PR16MB0149.namprd16.prod.outlook.com>
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On Mon, 02 Jul 2018 16:58:30 +0200, Wis Macomson <Wis@teraspeed.com> wrote: > Can you disconnect the serial TX data (data to the RPi) and try the > reboots? > > It may be that this signal is partially powering the processor through > the input ESD protection diode, leading to very awkward internal states. > This has been observed on the Rock64 (RK3328 SoC) and Rockpro64 (RK3399). > > If you can just break the TX connection, you'll be able to see the boot > messages. > > -wis Hi, I will try this. Is this also relevant if my serial connection of the RPI3 is not connected to my laptop (via USB). Because the reboot also fails than. Regards, Ronald.
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