Re: [PATCH v5 1/2] dt-bindings: cpufreq: add virtual cpufreq device

[Sudeep Holla]

On Fri, Feb 02, 2024 at 09:53:52AM -0600, Rob Herring wrote:
> On Wed, Jan 31, 2024 at 10:23:03AM -0800, Saravana Kannan wrote:
> >
> > We also need the OPP tables to indicate which CPUs are part of the
> > same cluster, etc. Don't want to invent a new "protocol" and just use
> > existing DT bindings.
> 
> Topology binding is for that.
> 
> What about when x86 and other ACPI systems need to do this too? You 
> define a discoverable interface, then it works regardless of firmware. 
> KVM, Virtio, VFIO, etc. are all their own protocols.
>

+1 for the above. I have mentioned the same couple of times but I am told
it can be taken up later which I fail to understand. Once we define DT
bindings, it must be supported for long time which doesn't provide any
motivation to such a discoverable interface which works on any virtual
platforms irrespective of the firmware.

--
Regards,
Sudeep