Re: [PATCH v10 0/3] thunderbolt: Add device links for Apple T2

[Mika Westerberg <mika.westerberg@linux.intel.com>]

Hi,

On Mon, Aug 31, 2026 at 12:00:23PM +0200, Mika Westerberg wrote:
> Hi all,
> 
> Original cover letter:
> 
>   This series adds support for Device linking on Titan ridge, and Icelake,
>   which are used exclusively on Apple T2 machines.
> 
> I went and did some changes so wanted to check that these still work on the
> Apple T2 systems. I dropped Tested-by from Alexander Fischer because these
> are not anymore the same patches. I would appreciate if you could re-test
> these and let me know if they still work or not.
> 
> The changes I did:
> 
>   - Make ->add_links a NHI operation instead.
>   - Move the check to nhi.c instead after we have selected software CM.
>   - Split out add_link() helper that can be used both integrated and
>     discrete case.
>   - Link only the matching PCIe root ports to the NHI that actually tunnels
>     them. The previous version (v9) linked all four for each NHI so there
>     are duplicate links. Each NHI tunnels just up to 2 PCIe root ports in
>     Ice Lake.
> 
> v9 of the patch series can be found here:
> 
>   https://lore.kernel.org/linux-usb/20260824184305.1234-1-atharvatiwarilinuxdev@gmail.com/
> 
> Atharva Tiwari (3):
>   thunderbolt: Move tb_apple_add_links() to pci.c
>   thunderbolt: Add device links for Apple machines with Titan Ridge
>   thunderbolt: Add device links for Apple systems with Ice Lake

Appled these to thunderbolt.git/next. I did not get any reports whether
this still works on the Apple T2 system but I guess silence means "no
issues" ;-) Let me know if that's not the case.