On Wed, Sep 2, 2026 at 01:41:16AM -0700, Bo Gan wrote:
> Hi Troy,
>
> I missed this one earlier. So basically I need the latest upstream kernel
> to be able to test this patchset,

Yes, that is correct. I have only tested this series with the upstream
kernel, not the vendor kernel. Sorry for not pointing this out in the
cover letter.

>
> because all the rpmi backed devices in
> vendor kernel device-tree just won't work. Perhaps this should be called
> out in the cover letter, so I don't have to waste time debugging vendor
> stuff. IMO, leaving the rpmi stuff out is the right approach for initial
> work. I feel that path needs to be properly reviewed and make sure it
> fully conforms to the standard.

I will state this explicitly in the next cover letter. This series
only provides the basic K3 platform initialization and start-only HSM
support needed to bring up the X100 and A100 harts. It does not include
the vendor-specific OpenSBI RPMI support required by the vendor kernel
and DT.

The relevant public documentation is available here:

  CCI and PMA [1]
  HSM-related power management [2]
  Clock and reset [3]
  SoC address map [4]

We do not currently plan to publish additional K3 hardware details.
Before doing so, we would need to reorganize the documentation and review
which parts can be made public. This is a substantial amount of work and
is not currently scheduled.

Link: https://www.spacemit.com/community/document/info?lang=en&nodepath=hardware/key_stone/k3/k3_docs/k3_usermanual/08_cpu.md [1]
Link: https://www.spacemit.com/community/document/info?lang=en&nodepath=hardware/key_stone/k3/k3_docs/k3_usermanual/16_peripherals/power_management.md [2]
Link: https://www.spacemit.com/community/document/info?lang=en&nodepath=hardware/key_stone/k3/k3_docs/k3_usermanual/17_clock_reset.md [3]
Link: https://www.spacemit.com/community/document/info?lang=en&nodepath=hardware/key_stone/k3/k3_docs/k3_usermanual/06_address_map.md [4]

                                            - Troy