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Date:      Tue, 3 Jul 2018 09:20:18 +1000
From:      Trev <freebsd-arm@sentry.org>
To:        "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: RPI3B+ does not reboot
Message-ID:  <b52282e0-40cc-bb59-3f54-ca042b63bfd8@sentry.org>
In-Reply-To: <BY2PR16MB0149B3B639A5664E8CAF1870BD430@BY2PR16MB0149.namprd16.prod.outlook.com>
References:  <BY2PR16MB0149B3B639A5664E8CAF1870BD430@BY2PR16MB0149.namprd16.prod.outlook.com>

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Wis Macomson wrote on 03/07/2018 00:58:
> 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.

I removed Tx and left Rx and Gnd connected but on the first reboot 
attempt I still suffered:

All buffers synced.
Uptime: 11h34m59s
Rebooting...
cpu_reset failed




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