linux-kernel - Re: BananaPi M2 support

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Message-ID: <d4e7ee22-8090-e165-393d-33a7363e554d@orpaltech.com>
Date:   Tue, 17 Nov 2020 20:06:19 +0300
From:   Sergey Suloev <ssuloev@...altech.com>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Maxime Ripard <maxime@...no.tech>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: BananaPi M2 support

Hi, ChenYu,

I have tried to build and run linux-next  by tag  "next-20201117".
Now the boot log looks different but the kernel still hangs. See 
https://pastebin.com/gFk7XuBc

Thank you,
Sergey


On 17.11.2020 11:06, Chen-Yu Tsai wrote:
> Hi,
>
> Please try linux-next. There were some regulator fixes that got merged recently.
> One of them fixes an infinite recursion when resolving regulator supplies.
>
> ChenYu
>
> On Tue, Nov 17, 2020 at 1:12 AM Sergey Suloev <ssuloev@...altech.com> wrote:
>> Hi, Maxime,
>>
>> it just hangs on that last lines and nothing happens anymore, see 5.18 log.
>>
>>
>> On 16.11.2020 18:52, Maxime Ripard wrote:
>>> Hi,
>>>
>>> On Sat, Nov 14, 2020 at 08:20:54PM +0300, Sergey Suloev wrote:
>>>> Hi,
>>>>
>>>> I noticed that BananaPi M2 (A31 SoC) does not boot anymore on modern
>>>> kernels. The problem arises somewhere between 5.7.19 - 5.8.18. I have saved
>>>> boot logs for both versions https://pastebin.com/DTRZi8R7  and
>>>> https://pastebin.com/PS2hq07A. Logs have been taken on clean/non-patched
>>>> kernel with default config, u-boot v2020.10.
>>>>
>>>> The kernel versions 5.7.x and below work well (I tried 5.5.19 and 5.6.19).
>>>> The versions 5.8.18 and above all fail (5.9 and 5.10).
>>>>
>>>> Could you look at the problem or provide an advice about further
>>>> investigation, please ?
>>> I'm not quite sure what the issue is exactly? How does it fail to boot?
>>>
>>> Maxime
>>
>> Thank you,
>> Sergey
>>