From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfram Sang <w.sang@pengutronix.de>
Subject: Re: [PATCH V2] omap-serial: add RS485 mode support
Date: Tue, 20 Dec 2011 22:53:33 +0100
Message-ID: <20111220215333.GA6775@pengutronix.de>
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To: Ilya Yanok <yanok@emcraft.com>
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Hi,

On Tue, Dec 20, 2011 at 10:23:32PM +0100, Ilya Yanok wrote:

> Add support for asserting RTS line while TX is in progress. OMAP
> hardware doesn't support auto-RS485 mode so we control the line from
> software. We use TX_EMPTY_CTL_IT bit in SCR register to generate TX
> empty interrupt.

Sorry to bring bad news, but software RS485 is not mainlinable [1].
You can browse linux-serial for RS485 to find more threads about it.

Regards,

   Wolfram

[1] http://article.gmane.org/gmane.linux.serial/3619/

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Pengutronix e.K.                           | Wolfram Sang                |
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