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From: Fabio Estevam <festevam@gmail.com>
To: Clemens Gruber <clemens.gruber@pqgruber.com>
Cc: "linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	"Nandor Han" <nandor.han@ge.com>,
	"Lucas Stach" <l.stach@pengutronix.de>,
	"Fabio Estevam" <fabio.estevam@freescale.com>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: imx: RS-485 problems during TX, maybe DMA related
Date: Sat, 7 Jan 2017 14:48:03 -0200	[thread overview]
Message-ID: <CAOMZO5CY3ys6moE133LwSKcS4egv56JdmhPMRG0TmAnfD+ZBAw@mail.gmail.com> (raw)
In-Reply-To: <20170107153434.GA13307@archie.localdomain>

On Sat, Jan 7, 2017 at 1:34 PM, Clemens Gruber
<clemens.gruber@pqgruber.com> wrote:
> Hi Fabio,
>
> On Sat, Jan 07, 2017 at 12:57:10PM -0200, Fabio Estevam wrote:
>> The MX6QDL_PAD_CSI0_DAT16__UART4_CTS_B option is only valid in dte mode.
>
> Ah, the input select is limited in that way, I see.
>
> You wrote that you tried rts-gpios.
> What about setting cts-gpios to gpio6 2 in the DT?
>
> Or can you remux RX and TX to be switched to work in dte mode?

I managed to get RS485 in half-duplex working with rts-gios. Will send
a patch shortly.

Thanks

  reply	other threads:[~2017-01-07 16:48 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-04 16:00 imx: RS-485 problems during TX, maybe DMA related Clemens Gruber
2017-01-06 21:22 ` Fabio Estevam
2017-01-06 22:50   ` Clemens Gruber
2017-01-07  0:31     ` Fabio Estevam
2017-01-07 13:45       ` Clemens Gruber
2017-01-07 14:57         ` Fabio Estevam
2017-01-07 15:34           ` Clemens Gruber
2017-01-07 16:48             ` Fabio Estevam [this message]
2017-01-07 20:59               ` Clemens Gruber
2017-01-07 21:43                 ` Fabio Estevam
2017-01-07 23:06                   ` Clemens Gruber
2017-01-08  2:30                     ` Fabio Estevam
2017-01-08 18:06                       ` Clemens Gruber
2017-01-08 21:46                         ` Fabio Estevam
2017-01-11  0:33                           ` Clemens Gruber
2017-01-11 11:51                             ` Fabio Estevam
2017-01-08 15:12                     ` Fabio Estevam

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