Re: [PATCH 0/2] x86/cpu: P-state support for Lightning Mountain

[Martin Schiller]

On 2026-03-06 18:59, Rafael J. Wysocki wrote:
> On Fri, Mar 6, 2026 at 9:27 AM Martin Schiller <ms@xxxxxxxxxx> wrote:
> > This patch set contains 2 commits to get P-state support for Intel /
> > MaxLinear Lightning Mountain. The first adds the needed code to the
> > intel_pstate driver. The second adds a workaround to the x86/cpu
> > subsystem to enable EIST on all cpus.
>
> Can you please combine the patches?
>
> Or does the first one work just fine without the second one?

Well, the first patch can basically be applied without the second one,
but then frequency stepping will only work on the first cpu core.

I split the two changes because they apply to different parts of the
kernel sources.

But you're probably right, and it makes sense to combine the two
patches.


BTW: The original code from the MaxLinear SDK enables EIST in the
intel_pstate driver, but I don't think that's the right place for it.