From: alexander.stein@systec-electronic.com (Alexander Stein)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] Documentation about RS485 serial communications
Date: Wed, 20 Oct 2010 10:00:14 +0200 [thread overview]
Message-ID: <201010201000.14905.alexander.stein@systec-electronic.com> (raw)
In-Reply-To: <i9kk4o$svc$1@dough.gmane.org>
On Tuesday 19 October 2010, 19:22:32 Grant Edwards wrote:
> Yes, the AT91 UARTs do have a built-in half-duplex mode that will
> automatically control line direction by toggling RTS.
>
> That can used to control external half-duplex hardware like an RS485
> transceiver or any RS232-connected half-duplex device like some
> modems.
>
> Though the Atmel docs refer to it as "RS485 mode" there is no RS485
> transceiver in the AT91 parts (AFAIK), and "RS485 mode" isn't specific
> to RS485 - it can be used with any external half-duplex hardware.
Out of curiosity, how can I add RS485 (or whatever) support for other serial
devices like e.g. i.mx serial? Is there some driver independent interface
which only gets filled in board configs like setting some GPIO pins?
Alexander
next prev parent reply other threads:[~2010-10-20 8:00 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-29 7:16 [PATCH] atmel_serial: Atmel RS485 support v2 Claudio Scordino
2010-03-29 19:44 ` Ryan Mallon
2010-03-30 9:07 ` Claudio Scordino
2010-03-30 19:37 ` Ryan Mallon
2010-04-08 7:58 ` Claudio Scordino
2010-04-08 9:01 ` Russell King - ARM Linux
2010-04-08 10:13 ` Alan Cox
2010-04-08 13:16 ` Claudio Scordino
2010-04-08 13:42 ` Alan Cox
2010-05-26 13:18 ` Nicolas Ferre
2010-05-27 8:37 ` Claudio Scordino
2010-05-27 9:57 ` Nicolas Ferre
2010-05-27 10:29 ` Wolfram Sang
2010-05-28 15:05 ` Claudio Scordino
2010-08-11 9:26 ` [PATCH] Documentation about RS485 serial communications Claudio Scordino
2010-08-11 10:02 ` Philippe De Muyter
2010-08-11 15:32 ` Randy Dunlap
2010-08-11 19:58 ` Claudio Scordino
2010-08-14 12:50 ` Claudio Scordino
2010-08-15 22:02 ` Randy Dunlap
2010-08-15 22:19 ` Russell King - ARM Linux
2010-10-19 12:28 ` Claudio Scordino
2010-10-19 14:29 ` Grant Edwards
2010-10-19 15:27 ` Alexander Stein
2010-10-19 17:22 ` Grant Edwards
2010-10-20 7:36 ` Nicolas Ferre
2010-10-20 8:00 ` Alexander Stein [this message]
2010-10-20 18:56 ` Alan Cox
2010-10-24 11:29 ` Claudio Scordino
2010-10-28 15:10 ` Chris Down
2010-10-28 15:31 ` Claudio Scordino
2010-10-28 16:30 ` Chris Down
2010-11-10 9:17 ` Nicolas Ferre
2010-11-10 17:28 ` Greg KH
2010-11-11 10:22 ` Claudio Scordino
2010-11-16 14:30 ` Pavel Machek
2010-11-16 15:23 ` Grant Edwards
2010-11-16 15:28 ` Alexander Stein
2010-11-16 16:13 ` Matt Schulte
2010-11-16 17:20 ` Alan Cox
[not found] ` <ibuh1v$uh6$1@dough.gmane.org>
2010-11-16 20:04 ` Alan Cox
2010-11-30 19:19 ` Pavel Machek
[not found] ` <ibubf5$ev$1@dough.gmane.org>
2010-11-16 18:41 ` Matt Schulte
2010-05-28 9:42 ` [PATCH] atmel_serial: Atmel RS485 support v2 Haavard Skinnemoen
2010-05-28 13:54 ` [PATCH] MAINTAINERS: some Atmel drivers change maintainer Nicolas Ferre
2010-05-28 13:31 ` Haavard Skinnemoen
2010-06-11 7:23 ` Nicolas Ferre
-- strict thread matches above, loose matches on Subject: below --
2010-08-11 20:23 [PATCH] Documentation about RS485 serial communications Randy Dunlap
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