Re: [PATCH RFC 04/10] ARM: cortina: Add support for the CS75xx SoC family

[Arnd Bergmann]

On Wed, Sep 30, 2026, at 14:11, Fil Dunsky wrote:
> On Wed, Sep 30, 2026 at 02:02:43PM +0200, Arnd Bergmann wrote:
>
> The boot loader is the stock U-Boot 2009.11 from the router vendor, and
> replacing it on these devices is risky enough that I would rather not
> depend on it, so PSCI is not really an option here.

Right, makes sense.

> A generic spin-table for arm32 would work for me, with two differences
> from the arm64 one that it would have to cover: the release address
> here is an MMIO register in the global control block, not a word in
> memory, so it has to be written with writel() through an ioremap(), and
> the Cortex-A9 SCU gets enabled in smp_prepare_cpus() (I have not
> checked whether the stock U-Boot already does that). If that sounds
> acceptable, I can post it as a separate patch in v2 and drop the
> enable method binding and mach directory from this series; otherwise
> I will keep the small platsmp.c under the name you and Linus agree on.

It sounds to me like this is different enough from the generic
spin-table that we should keep your current version then.

       Arnd