[PATCH] arm64: dts: imx8mp-debix-model-a: Disable EEE for 1000T

[Laurent Pinchart]

On Wed, Nov 12, 2025 at 12:56:22PM +0000, Russell King (Oracle) wrote:
> On Wed, Nov 12, 2025 at 12:41:50PM +0000, Kieran Bingham wrote:
> > Perhaps further complicating matters.
> > 
> > I have a Debix Model A as well ... I'm in a different office to Laurent
> > - and I believe EEE is enabled on my board/network switch.
> > 
> > I do not get an interrupt storm.
> > 
> > I'm not sure how this helps yet, - I don't know what to debug as I can't
> > reproduce the issue!
> > 
> > I can provide remote access to the board with ssh if that helps anyone
> > who wants to look at something specific about my setup or run anything
> > if anyone has ideas of what to check my side.
> > 
> > Perhaps we can find some subtle difference between a working case and a
> > non-working case...
> 
> Thanks, that's interesting. I guess the next steps would be to try and
> work out what's different between your two setups.
> 
> - same board revision?
> - same firmware/ATF?
> - same kernel/modules?
> - same type of link partner? (I suspect, given the cpu-pd-wait
>    interaction, isn't the problem.)

I've provided the binaries I use for U-Boot (including TF-A) and the
kernel to Kieran, he will test to see if they make a difference. I also
tested replacing mainline TF-A (v2.13) with the downstream NXP version
listed in the U-Boot i.MX8MP EVK documentation, and that didn't appear
to make any difference.

-- 
Regards,

Laurent Pinchart