Re: [PATCH] net: phy: at803x: Improve hibernation support on start up

[Marek Vasut <marex@denx.de>]

On 12/14/23 09:13, Romain Gantois wrote:
> 
> Hello Russell,
> 
> On Thu, 10 Aug 2023, Russell King (Oracle) wrote:
> 
>>> We've had these issues before with stmmac, so this "stmmac needs the
>>> PHY receive clock" is nothing new - it's had problems with system
>>> suspend/resume in the past, and I've made suggestions... and when
>>> there's been two people trying to work on it, I've attempted to get
>>> them to talk to each other which resulted in nothing further
>>> happening.
>>>
>>> Another solution could possibly be that we reserve bit 30 on the
>>> PHY dev_flags to indicate that the receive clock must always be
>>> provided. I suspect that would have an advantage in another
>> ...
>>
>> Something like this for starters:
>>
>> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
>> ...
> 
> I've implemented and tested the general-case solution you proposed to this
> receive clock issue with stmmac drivers. The core of your suggestion is pretty
> much unchanged, I just added a phylink_pcs flag for standalone PCS drivers that
> also need to provide the receive clock.
> 
> I'd like to send a series for this upstream, which would allow solving this
> issue for both the DWMAC RZN1 case and the AT803x PHY suspend/hibernate case
> (and also potentially other cases with a similar bug).
> 
> I wanted to ask you how you would prefer to be credited in my patch series. I
> was considering putting you as author and first signer of the initial patch
> adding the phy_dev flag. Would that be okay or would you prefer something else?

Credit it whichever way you see fit, don't worry, better focus on the 
fix. I can test the result on MX8MM/MX8MP, so feel free to CC me on that.