[PATCH RFC 2/3] arch_topology: Parse die nodes in /cpu-map

[Sudeep Holla]

On Sun, Sep 20, 2026 at 11:18:03AM +0800, Troy Mitchell wrote:
> The devicetree CPU map can distinguish packages and clusters but cannot
> describe multiple dies in one package. Such systems have to flatten all
> clusters into the package, making cluster identifiers package-wide and
> hiding the die boundary.
> 
> Recognize an optional sequence of dieN nodes between a socket and its
> clusters, and propagate the die identifier to every CPU below it. Enumerate
> clusters independently below each die.
> 
> When a CPU map has no dieN nodes, continue parsing its existing package
> and cluster hierarchy but pass -1 as the die identifier. Legacy maps
> therefore remain compatible without being reported as an explicitly
> described die 0.
> 

Where is the associated bindings ? Am I missing to check it in the series
or it is really missing ? It is essential to add any code using the binding.

Also how does it align with ACPI implementation ? It is preferred to be
in parity here, so we need some binding there as well IMHO.

-- 
Regards,
Sudeep