[EXT] Re: [PATCH v2] arm64: errata: Add NXP iMX8QM workaround for A53 Cache coherency issue

[Francesco Dolcini]

Hello Frank,

On Wed, Dec 10, 2025 at 02:55:12PM +0000, Frank Li wrote:
> > On Thu, Apr 20, 2023 at 02:29:52PM +0300, Ivan T. Ivanov wrote:
> > > According to NXP errata document[1] i.MX8QuadMax SoC suffers from
> > > serious cache coherence issue. It was also mentioned in initial
> > > support[2] for imx8qm mek machine.
> > 
> > Ivan, from what I can see this patch was never merged and there was not any
> > follow-up on this. What's the status? Are you planning to work on it?
> > 
> > Frank, it would be nice to have this issue sorted out in mainline, any
> > chance that NXP can help move this forward?
> 
> Jason worked the original solution, what's difficult of upstream accept the
> Solution?

Was it ever sent to mainline for inclusion?

Can NXP help on having a workaround for this errata implemented in
mainline Linux, whatever is the actual final technical solution?

Francesco