[PATCH 0/6] backport fixes and improvements for MT7530

Arınç ÜNAL arinc.unal at arinc9.com
Sat Feb 5 14:26:36 PST 2022

On 06/02/2022 00:43, Hauke Mehrtens wrote:
> On 2/5/22 22:15, Arınç ÜNAL wrote:
>> On 05/02/2022 21:23, Hauke Mehrtens wrote:
>>> On 2/5/22 19:21, Rosen Penev wrote:
>>>> On Sat, Feb 5, 2022 at 10:12 AM Hauke Mehrtens <hauke at hauke-m.de> 
>>>> wrote:
>>>>> On 2/3/22 13:06, DENG Qingfang wrote:
>>>>>> Hi,
>>>>>> This series backports some patches from upstream to address the 
>>>>>> current
>>>>>> MT7530 DSA driver's problems.
>>>>>> Thanks.
>>>>>> DENG Qingfang (6):
>>>>>>     kernel: backport MediaTek jumbo frame support
>>>>>>     kernel: backport MT7530 ageing time support
>>>>>>     kernel: backport MT7530 VLAN fix
>>>>>>     kernel: backport MT7530 MDB operations
>>>>>>     kernel: backport MediaTek Ethernet PHY driver
>>>>>>     kernel: backport MT7530 IRQ support
>>>>> Hi,
>>>>> The last two patches are breaking the Linksys e8450 (mt7622) for me.
>>>>> I am getting these errors:
>>>> Note the commentary in
>>>> https://github.com/openwrt/openwrt/commit/3f4301e123f29348b4ad87578d62b7d1f5f210c6 
>>>> The message in dmesg is harmless. It just says the functionality in
>>>> this patch needs dts bindings, which were only provided for ramips.
>>> The following error messages are a bigger problem:
>> There was nothing wrong with that commit to revert it. But you 
>> could've reverted the series as a whole since, technically, this patch 
>> series broke the process so I guess it's better than nothing.
> Ethernet was not working at all on my device. I did not want to debug 
> this, but revert the braking changes in master.
>> I wonder if the PHY driver even works at its current state on upstream 
>> for mt7531 or, more specifically, the built-in mt7531 on the MT7622X 
>> chips.
> The PHY driver expects that the correct PHY mode is configured, but we 
> do not specify any phy-mode in the dts for this device and probably also 
> others.

Hmm, it seems to do that only for mt7531. That must be why mt7530 on our 
mt7621a works fine. I wonder why this check is there for mt7531 but not 


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