TH1520: broken CPU count detection

[Yao Zi]

On Tue, Sep 15, 2026 at 09:31:01AM +0200, Michael Opdenacker wrote:
> Greetings,
> 
> For the Yocto meta-riscv layer, we're trying to replace the downstream
> opensbi (called opensbi-revyos) by mainline opensbi:
> https://github.com/riscv/meta-riscv/pull/685/
> 
> The board boots fine, but unfortunately, only 1 CPU core is detected. This
> surfaces in the Linux kernel log:
> 
> [    0.089851] smp: Bringing up secondary CPUs ...
> [   10.165542] CPU1 failed to report alive state
> [   20.241632] CPU2 failed to report alive state
> [   30.316980] CPU3 failed to report alive state

What Linux kernel are you using?

> Any tips for solving this issue?
> Thanks in advance
> Cheers
> Michael
> 
> 
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