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Bug#864807: debian-installer: Lamobo R1 requires modprobe b53_mdio

Cross-posted to 2 groups.

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On 06/15/2017 12:57 PM, Karsten Merker wrote:
> Cyril Brulebois wrote:
>> On Thu, Jun 15, 2017 at 10:43:18AM +0100, Ben Hutchings wrote:
>>> Control: tag -1 moreinfo
>>>
>>> On Thu, 2017-06-15 at 08:34 +0200, Heinrich Schuchardt wrote:
>>>> Package: debian-installer
>>>> Version: stretch
>>>> Severity: normal
>>>>
>>>> Dear Maintainer,
>>>>
>>>> the Lamobo R1 is an Arm system based on the Amlogic A20.
>>>> The network interface of the A20 is connected to a switch.
>>>> If the switch is not configured there is no external
>>>> network access and subsequently a network install fails.
>>>>
>>>> On an installed system it is sufficient to have a line
>>>> in /etc/modules:
>>>> b53_mdio
>>>>
>>>> I suggest the following corrections to the installer:
>>>>
>>>> The initrd.img should include the b53_mdio module and its
>>>> prerequisites b53_common and dsa_core plus aforementioned
>>>> file /etc/modules.
>>>>
>>>> The installer should compare the content of
>>>> /proc/device-tree/model
>>>> to the string
>>>> Lamobo R1
>>>>
>>>> If this string is found, the file /etc/modules should be
>>>> appended with b53_mdio on the installed system.
>>>
>>> Why is this necessary?  It should load automatically.
>>
>> Because of missing i2c? Lamobo R1 is listed here:
>>   https://bugs.debian.org/864536#15
>>
>> (Didn't check the recursive list of dependencies though.)
> 
> If I understood the original submitter correctly, the problem
> also exists in the installed system, not only in d-i.  The
> i2c-modules udeb issue (or other modules unavailable in the udebs
> but available in the regular kernel deb) would explain problems
> inside d-i, but not in the installed system.
> 
> Heinrich, can you clarify on that?
> 
> Regards,
> Karsten
> 

Yes, the problems exists both in the installer and in an installed system.

I set up the installed system via debootstrap:
https://github.com/xypron/debian-image-lamobo-r1/commit/8fa1b7cb3a0cc2bfd44475d0c9972115ffb82e15

Best regards

Heinrich Schuchardt

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Bug#864807: debian-installer: Lamobo R1 requires modprobe b53_mdio Cyril Brulebois <kibi@debian.org> - 2017-06-15 12:40 +0200
  Bug#864807: debian-installer: Lamobo R1 requires modprobe b53_mdio Karsten Merker <merker@debian.org> - 2017-06-15 13:10 +0200
    Bug#864807: debian-installer: Lamobo R1 requires modprobe b53_mdio Heinrich Schuchardt <xypron.glpk@gmx.de> - 2017-06-15 17:40 +0200

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