Re: [PATCH 0/3] platform: generic: spacemit: k3: follow-up fixes

From: "Troy Mitchell" <troy.mitchell@linux.spacemit.com>
To: "Bo Gan" <ganboing@gmail.com>,
	"Troy Mitchell" <troy.mitchell@linux.spacemit.com>,
	"Valentin Haudiquet" <valentin.haudiquet@canonical.com>
Cc: <opensbi@lists.infradead.org>,
	"Xianbin Zhu" <xianbin.zhu@linux.spacemit.com>,
	"Anup Patel" <anup@brainfault.org>,
	"Samuel Holland" <samuel.holland@sifive.com>,
	"Heinrich Schuchardt" <heinrich.schuchardt@canonical.com>
Subject: Re: [PATCH 0/3] platform: generic: spacemit: k3: follow-up fixes
Date: Wed, 02 Sep 2026 17:38:03 +0800	[thread overview]
Message-ID: <DL4QAFEBOHOQ.DSF67YYWU9N4@linux.spacemit.com> (raw)
In-Reply-To: <a2f37394-2cce-4168-9d84-df51aade028b@gmail.com>

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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

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