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Date:      Thu, 07 Nov 2019 00:10:33 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-arm@FreeBSD.org
Subject:   [Bug 241768] Serial port hang on Raspberry PI arm64
Message-ID:  <bug-241768-7@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D241768

            Bug ID: 241768
           Summary: Serial port hang on Raspberry PI arm64
           Product: Base System
           Version: 12.0-STABLE
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: arm
          Assignee: freebsd-arm@FreeBSD.org
          Reporter: ian@niw.com.au

If data is sent to the raspberry pi serial port immediately after boot and
before any data is output the serial port will often hang up completely.
Attempts to output will stall. No input can be received. If anything is out=
put
before the first data is received by the port it all works fine.

In all my tests one character is received, after this nothing more can be i=
nput
or output.

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