Re: [RFC V6 0/8] arm_scmi: vendors: Qualcomm Generic Vendor Extensions

[Sudeep Holla <sudeep.holla@kernel.org>]

On Thu, May 14, 2026 at 05:11:41PM +0530, Sibi Sankar wrote:
> 
> On 5/13/2026 10:30 PM, Lukasz Luba wrote:
> > 
> > 

[...]

> 
> > Based on this description I have a few questions:
> > 1. Why we don't use SCMI notifications for this purpose?
> 
> 
> This is an attempt to retrofit firmware, that is already out in the wild
> running on X1E laptops and Glymur which continues to use the same firmware, into
> generic linux frameworks, so that it provides some useful information to
> user rather than it being a complete black box.

We cannot accept changes that rely on firmware interfaces that are not well
defined. This is not a comment on any specific interface, but if an interface
is not specified with the same level of rigor as a standard specification, it
should not be expected to receive mainline support.

> We already have a ton of firmware changes suggested by Sudeep/Cristian that
> will be taken into account for the next generation of SoCs, will make sure
> this is accounted for as well :)

It is helpful to know this but also unfortunate as we have only just begun
reviewing the interface and refining its shape. Please do not rely solely on
the review completed so far, as the interface may still evolve. Until it is
merged, it should not be considered accepted. This is why I am insisting that
the interface document be reviewed and accepted before any driver changes are
made.

-- 
Regards,
Sudeep