[PATCH v5 1/7] dt-bindings: Arm: Add Firmware Framework for Armv8-A (FF-A) binding

[Sudeep Holla]

On Fri, Mar 26, 2021 at 10:35:23AM +0530, Sumit Garg wrote:
> Hi Sudeep,
>
> Apologies for catching up late on this patch-set.
>
> On Thu, 25 Mar 2021 at 20:05, Sudeep Holla <sudeep.holla at arm.com> wrote:
> >
> > Since the FF-A v1.0 specification doesn't list the UUID of all the
> > partitions in the discovery API, we need to specify the UUID of the
> > partitions that need to be accessed by drivers within the kernel.
> >
>
> Wouldn't we be able to implement auto-discovery of ffa partitions? I
> think enumeration of ffa partitions on FFA bus should be quite similar
> to enumeration of TAs on TEE bus (see [1]). Otherwise we need to put
> these redundant DT entries for every ffa partition which IMHO would
> bloat up device trees for every platform.
>

Any suggestions on how to ? Clearly spec doesn't have that provision, I
had raised this point in the past. Jens has similar concern and he did
ask the same[1]. As I replied to him in that thread[2].

I am open to suggestion on how to auto-discover, currently as I see spec
doesn't support it.

--
Regards,
Sudeep

[1] https://lore.kernel.org/linux-arm-kernel/20201216134659.GA4146223@jade/
[2] https://lore.kernel.org/linux-arm-kernel/20210113092236.pnabzaufzuzwprmw@bogus/