Re: [PATCH net-next v2 7/7] net: dsa: mv88e6xxx: enable support for 88E6361 switch

From: Alexis Lothoré
Date: Mon May 22 2023 - 08:30:20 EST


Hello Andrew,
On 5/22/23 14:19, Andrew Lunn wrote:
>>> Not exactly related to this patch, but please do not rely on this "max
>>> speed mode" - please always ensure that you specify the phy-mode and
>>> fixed-link settings for CPU and DSA ports in firmware. Thanks.
>>
>> I would like to make sure to fully understand your point:
>> - when telling so specify phy-mode and fixed-link in firmware, you mean
>> device-tree, right ?
>> - when checking for code and execution flow, I observe that port_max_speed is
>> always called and its output is always used to configure shared ports mode in
>> mv88e6xxx driver. Are you telling that eventually, the whole mv88e6xxx driver
>> should stop relying on port_max_speed_mode for shared ports ?
>
> Yes, the concept of port_max_speed_mode causes problems for PHYLINK,
> and we want to remove it. Russell and i have been updating DT
> descriptions adding fixed-link and phy-mode properties to all
> mv88e6xxx systems so that it is not needed. Either at the end of this
> cycle, or the beginning of the next we will change the code to
> actually enforce this.

Understood, thanks for clarification

>
> Andrew

--
Alexis Lothoré, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com