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SubjectRe: [regression, bisected] 4.11+ imx uarts broken
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On 05/09/2017 10:14 AM, Uwe Kleine-König wrote:
> 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?

I am operating in DCE mode. The debug/console uart works ok, but two others don't.

>
> Looking at the patch I wonder if setting IMX21_UCR3_RXDMUXSEL |
> UCR3_ADNIMP is missing for you.
>

Probably yes, but I can verify this later and get back to you.

> Can you please check which hunk of e61c38d85b73 is giving you problems?
>
> Best regards
> Uwe
>

--Mika

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