Re: [RFC net-next v1 2/2] net. phy: dp83tg720: Add randomized polling intervals for unstable link detection

[Andrew Lunn]

On Wed, Nov 27, 2024 at 02:10:11PM +0100, Oleksij Rempel wrote:
> Address the limitations of the DP83TG720 PHY, which cannot reliably detect or
> report a stable link state. To handle this, the PHY must be periodically reset
> when the link is down. However, synchronized reset intervals between the PHY
> and its link partner can result in a deadlock, preventing the link from
> re-establishing.
> 
> This change introduces a randomized polling interval when the link is down to
> desynchronize resets between link partners.

Hi Oleksij

What other solutions did you try? I'm wondering if this is more
complex than it needs to be. Could you add a random delay in
dp83tg720_read_status() when it decides to do a reset?

	Andrew