Re: [PATCH] PCI: Extend Apple Thunderbolt power quirk to Alpine Ridge

["Francisco Beltrán Millalén" <fbeltranmillalen@gmail.com>]

Hi Mika,

On Fri, Oct 16, 2026 at 07:25:03AM +0200, Mika Westerberg wrote:
> Unfortunately I can't expose any of the non-public bits without going
> through an extensive paper work.

No problem.  I'll describe bit 26 in the patch only by what I measured:
with it set, SXFP() really powers the controller off and Linux does not
bring it back on resume; with it clear, the controller resumes fine.

> I can comment on the ACPI bits, though. I think they can be put into
> drivers/thunderbolt/acpi.c if they are strictly TB specific.

That makes sense to me.  I'll move both parts into drivers/thunderbolt:
calling SXFP() on suspend, and clearing bit 26 just before it.  I'll
test it the same way as the PCI version, with a USB disk attached
across suspend, and send it as a new patch when it works.

Bjorn, that new patch would replace this one, and nothing would be
left to change in drivers/pci for Alpine Ridge.  So please drop this
version.

Thanks,
Francisco