Re: [PATCH v5 net-next 08/13] net: phy: marvell-88q2xxx: add support for temperature sensor

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Am Thu, Feb 01, 2024 at 02:23:15PM +0100 schrieb Andrew Lunn:
> > Anyway it's wrong. I couldn't find a good solution to use the temperature
> > interrupt. Will have a look into this, and probably figuring out how to
> > do so. But it won't be part of this patch series.
> 
> I don't know of any PHY driver you can follow, those that do have a
> temperature sensor just report the temperature and don't do anything
> in addition.
> 
> You might need to look at thermal zones, and indicate there has been a
> thermal trip point. That could then be used by the thermal subsystem
> to increase cooling via a fan, etc. In theory, you could also make the
> PHY active to thermal pressure, by forcing the link to renegotiate to
> a lower link speed. If you decide to go this route, please try to make
> is generic to any PHY. But its going to be quite a disruptive thing,
> the link will be lost of a little over a second...
> 
Making the PHY active to thermal pressure sounds interesting. Will look
into this.




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