From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: "Mika Penttilä" <mika.penttila@nextfour.com>
Cc: linux-serial@vger.kernel.org, kernel@pengutronix.de,
linux-kernel@vger.kernel.org
Subject: Re: [regression, bisected] 4.11+ imx uarts broken
Date: Tue, 9 May 2017 09:14:35 +0200 [thread overview]
Message-ID: <20170509071435.kxt6pjlglzinf2w5@pengutronix.de> (raw)
In-Reply-To: <f6fded83-f062-94da-ec1b-b2ab6e6c5101@nextfour.com>
Hello Mika,
On Tue, May 09, 2017 at 07:18:09AM +0300, Mika Penttilä wrote:
> The following commit e61c38d85b7 makes the uarts on i.MX6 nonfunctional (no data transmitted or received).
> With e61c38d85b7 reverted the uarts work ok.
>
> -------------------
> commit e61c38d85b7392e033ee03bca46f1d6006156175
> Author: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> Date: Tue Apr 4 11:18:51 2017 +0200
>
> serial: imx: setup DCEDTE early and ensure DCD and RI irqs to be off
>
> --------------------
are you operating the UART in DTE or DCE mode? Does this affect all
UARTs or only those that are not used in the bootloader?
Looking at the patch I wonder if setting IMX21_UCR3_RXDMUXSEL |
UCR3_ADNIMP is missing for you.
Can you please check which hunk of e61c38d85b73 is giving you problems?
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
next prev parent reply other threads:[~2017-05-09 7:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-09 4:18 [regression, bisected] 4.11+ imx uarts broken Mika Penttilä
2017-05-09 7:14 ` Uwe Kleine-König [this message]
2017-05-09 7:25 ` Mika Penttilä
2017-05-09 14:31 ` Uwe Kleine-König
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