[PATCH 2/3] pmdomain: spacemit: Add power domain driver

[Troy Mitchell]

On Sat, Sep 19, 2026 at 09:56:12PM +0800, Icenowy Zheng wrote:
> I have seen pending patch for it with multiple revisions [1], the dt
> binding is even already ACKed by Conor, so I think it's not a big
> problem here.
>
> [1] 20260903092347.620060-1-joshua.yeong at starfivetech.com

ESOS is based on RT-Thread, and we currently have no plans to upstream
our ESOS changes to RT-Thread. Our team's scope here is upstream
open-source support; upstreaming ESOS itself is outside that scope.

The pending Linux RPMI patches are useful progress, but making the
complete solution work on K3 still requires substantial integration,
validation and maintenance work across Linux, OpenSBI and ESOS. We
cannot assume that someone in the community will take on that work.

I am not opposed to RPMI, nor does this require ESOS to be merged into
RT-Thread first. My concern is who will bring up and maintain the
complete solution. If our team is not pursuing that work and nobody
else takes it on, should power-domain support remain blocked
indefinitely?

Could we move forward with the direct-control driver, with its
mutual exclusion with ESOS power-domain management clearly documented,
and revisit RPMI when someone is ready to support that path?

                                            - Troy
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