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 [off-list ref] wrote:

quoted

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/ (local)
[2] https://lore.kernel.org/linux-arm-kernel/20210113092236.pnabzaufzuzwprmw@bogus/ (local)

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