From: Wolfgang Denk <wd@denx.de>
To: laurent.pinchart@capflow.com
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: SCC or SMC for console ?
Date: Thu, 14 Feb 2002 19:31:58 +0100 [thread overview]
Message-ID: <20020214183203.C4651109E2@denx.denx.de> (raw)
In-Reply-To: Your message of "Thu, 14 Feb 2002 18:28:17 +0100." <3C6BF3B1.2040906@capflow.com>
Dear Laurent,
in message <3C6BF3B1.2040906@capflow.com> you wrote:
>
> I need 4 serial ports at runtime, and was wondering if I should rather
> use 2SMC + 2SCC or 4 SCC (or 1SMC + 3SCC).
Assuming that you need Ethernet: if you can use the FEC for Ethernet,
that it does not matter much; otherwise I'd recommend to use 2SMC +
2SCC or 1SMC + 3SCC so that you have at east one SCC left for
Ethernet.
> I need a console, but no hardware flow control (which would force the
> use of SCC).
Should be no problem. The kernel on our FTP server was tested with 6
serial ports on a MPC860, with HW flow controll on all SCC's. The
only problem in such a configuration is that you have only 4 BRG's so
two ports have to share the baudrate with another port.
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
See us @ Embedded Systems Nuremberg, Feb 19-21, Hall 12 K01 (with TQ)
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2002-02-14 18:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-14 17:28 SCC or SMC for console ? Laurent Pinchart
2002-02-14 18:16 ` Dan Malek
2002-02-15 13:10 ` Laurent Pinchart
2002-02-14 18:31 ` Wolfgang Denk [this message]
2002-02-15 14:24 ` Laurent Pinchart
2002-02-15 14:35 ` Wolfgang Denk
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