netdev - Re: mtk_eth_soc for mt7621 won't work after 6.0-rc1

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Date:   Mon, 12 Sep 2022 22:06:25 +0300
From:   Arınç ÜNAL <arinc.unal@...nc9.com>
To:     Lorenzo Bianconi <lorenzo@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Sergio Paracuellos <sergio.paracuellos@...il.com>
Subject: Re: mtk_eth_soc for mt7621 won't work after 6.0-rc1

Hi Lorenzo,

On 12.09.2022 21:01, Lorenzo Bianconi wrote:
>>> Ethernet for MT7621 SoCs no longer works after changes introduced to
>>> mtk_eth_soc with 6.0-rc1. Ethernet interfaces initialise fine. Packets are
>>> sent out from the interface fine but won't be received on the interface.
>>>
>>> Tested with MT7530 DSA switch connected to gmac0 and ICPlus IP1001 PHY
>>> connected to gmac1 of the SoC.
>>>
>>> Last working kernel is 5.19. The issue is present on 6.0-rc5.
>>>
>>> Arınç
>>
>> Hi Arınç,
>>
>> thx for testing and reporting the issue. Can you please identify
>> the offending commit running git bisect?
>>
>> Regards,
>> Lorenzo
> 
> Hi Arınç,
> 
> just a small update. I tested a mt7621 based board (Buffalo WSR-1166DHP) with
> OpenWrt master + my mtk_eth_soc series and it works fine. Can you please
> provide more details about your development board/environment?

I've got a GB-PC2, Sergio has got a GB-PC1. We both use Neil's 
gnubee-tools which makes an image with filesystem and any Linux kernel 
of choice with slight modifications (maybe not at all) on the kernel.

https://github.com/neilbrown/gnubee-tools

Sergio experiences the same problem on GB-PC1.

Arınç