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From: Fabio Estevam <festevam@gmail.com>
Date: Wed, 11 Jan 2017 09:51:29 -0200
Message-ID: <CAOMZO5CGoq6FKSE6n9CyQycdtuJ6dAjSL7vJU4ZtXjAPWvdAug@mail.gmail.com>
Subject: Re: imx: RS-485 problems during TX, maybe DMA related
To: Clemens Gruber <clemens.gruber@pqgruber.com>,
        Tim Harvey <tharvey@gateworks.com>
Cc: "linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        =?UTF-8?Q?Uwe_Kleine=2DK=C3=B6nig?= 
        <u.kleine-koenig@pengutronix.de>,
        Nandor Han <nandor.han@ge.com>, Lucas Stach <l.stach@pengutronix.de>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>
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Hi Clemens,

On Tue, Jan 10, 2017 at 10:33 PM, Clemens Gruber
<clemens.gruber@pqgruber.com> wrote:
> Hi Fabio,
>
> On Sun, Jan 08, 2017 at 07:46:29PM -0200, Fabio Estevam wrote:
>> > What's the revision of the i.MX6Q on your board? Mine is 1.5 (TO 1.3)
>>
>> Mine is a mx6solo rev1.1.
>
> Could it be dependent upon SMP? Do you have an i.MX6Q board around to
> try?

Unfortunately the only hardware I can test RS485 is based on mx6solo.

Adding Tim Harvey, who could probably test RS485 on MX6Q.

Regards,

Fabio Estevam