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Date:   Wed, 1 Nov 2017 12:09:14 +0000
From:   Peter Robinson <pbrobinson@...il.com>
To:     Stefan Wahren <stefan.wahren@...e.com>
Cc:     Matt Hart <matt@...tface.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        Loic Poulain <loic.poulain@...il.com>,
        linux-arm-kernel@...ts.infradead.org, Eric Anholt <eric@...olt.net>
Subject: Re: [GIT PULL 1/2] bcm2835-dt-fixes-2017-10-06

On Wed, Nov 1, 2017 at 12:05 PM, Stefan Wahren <stefan.wahren@...e.com> wrote:
> Hi Matt, hi Peter,
>
> Am 01.11.2017 um 10:37 schrieb Peter Robinson:
>> On Tue, Oct 31, 2017 at 5:00 PM, Matt Hart <matt@...tface.org> wrote:
>>> On 6 October 2017 at 23:14, Florian Fainelli <f.fainelli@...il.com> wrote:
>>>> On 10/06/2017 03:05 PM, Eric Anholt wrote:
>>>>> Hi Florian.  Here's a patch that's gone through a couple of revisions
>>>>> on the list, that seriously fixes up the default serial behavior --
>>>>> previously, without the right config.txt/cmdline bits, you'd often end
>>>>> up with a hang with no output before booting completed.  It would be
>>>>> great to get it into 4.14.
>>>>>
>>>>> The following changes since commit 2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e:
>>>>>
>>>>>   Linux 4.14-rc1 (2017-09-16 15:47:51 -0700)
>>>>>
>>>>> are available in the git repository at:
>>>>>
>>>>>   git://github.com/anholt/linux tags/bcm2835-dt-fixes-2017-10-06
>>>>>
>>>>> for you to fetch changes up to f08f58a2bf68900a84e782b8c7ad701c0654173c:
>>>>>
>>>>>   ARM: dts: bcm283x: Fix console path on RPi3 (2017-10-06 13:04:56 -0700)
>>>>>
>>>>> ----------------------------------------------------------------
>>>>> This pull request brings in a fix for default serial console setup on
>>>>> RPi3, so it now comes up with no config.txt/cmdline.txt settings in
>>>>> the firmware.
>>>>>
>>>>> ----------------------------------------------------------------
>>>> Merged, thanks Eric
>>>>
>>>> --
>>>> Florian
>>> Hi all,
>>>
>>> I realise this patch has been in mainline for a more than a week, but
>>> I've only recently had time to bisect broken rpi-3 boots in kernelci
>>> and found f08f58a2bf68900a84e782b8c7ad701c0654173c as the cause.
>>>
>>> Kernelci boots the rpi3 using uboot, with console=ttyS0 in the command
>>> line which now fails:
>>> https://kernelci.org/boot/id/59f787f059b5147794ef1dcf/
>>>
>>> Is there an alias I can use for both before and after this patch?
>>>
>>> Mainline boots fine if I use console=ttyS1 or drop the console arg
>>> altogether, but as we don't currently support different boot args per
>>> tree, and we don't have the manpower to track this patch in all the
>>> trees we test, we will have to switch to only boot testing mainline
>>> from now on.
>> Yes, I've seen the same in Fedora with that patch.
>>
>>
> could you please describe the issue more in detail.
>
> Does u-boot or Linux hang? Does u-boot select the wrong UART? Is there a
> pinmux conflict?

Basically on the RPi3 you use to get ttyAMA0 and ttyS0 but now the
later is ttyS1

> Which u-boot version do you use?

Upstream

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