From: Wolfram Sang <w.sang@pengutronix.de>
To: Ilya Yanok <yanok@emcraft.com>
Cc: linux-omap@vger.kernel.org, linux-serial@vger.kernel.org,
sasha_d@emcraft.com
Subject: Re: [PATCH V2] omap-serial: add RS485 mode support
Date: Tue, 20 Dec 2011 22:53:33 +0100 [thread overview]
Message-ID: <20111220215333.GA6775@pengutronix.de> (raw)
In-Reply-To: <1324416212-10012-1-git-send-email-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/
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2011-12-20 21:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-20 21:23 [PATCH V2] omap-serial: add RS485 mode support Ilya Yanok
2011-12-20 21:53 ` Wolfram Sang [this message]
2011-12-20 22:10 ` Ilya Yanok
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