[PATCH RFC net-next v2 0/3] net: stmmac: approach 2 to solve EEE LPI reset issues

[Russell King (Oracle)]

On Fri, Mar 07, 2025 at 04:11:19PM +0000, Jon Hunter wrote:
> Hi Russell,
> 
> On 06/03/2025 15:23, Russell King (Oracle) wrote:
> > Hi,
> > 
> > This is a second approach to solving the STMMAC reset issues caused by
> > the lack of receive clock from the PHY where the media is in low power
> > mode with a PHY that supports receive clock-stop.
> > 
> > The first approach centred around only addressing the issue in the
> > resume path, but it seems to also happen when the platform glue module
> > is removed and re-inserted (Jon - can you check whether that's also
> > the case for you please?)
> > 
> > As this is more targetted, I've dropped the patches from this series
> > which move the call to phylink_resume(), so the link may still come
> > up too early on resume - but that's something I also intend to fix.
> > 
> > This is experimental - so I value test reports for this change.
> 
> 
> The subject indicates 3 patches, but I only see 2 patches? Can you confirm
> if there are 2 or 3?

Yes, 2 patches is correct.

> So far I have only tested to resume case with the 2 patches to make that
> that is working but on Tegra186, which has been the most problematic, it is
> not working reliably on top of next-20250305.

To confirm, you're seeing stmmac_reset() sporadically timing out on
resume even with these patches appled? That's rather disappointing.

Do either of the two attached diffs make any difference?

Thanks for testing!

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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