TH1520: broken CPU count detection

[Michael Opdenacker]

Hi Yao

On 9/16/26 6:42 PM, Yao Zi wrote:
> 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?
I'm using mainline Linux 7.2.x.
Is this something Linux can manage?
Thanks
Michael