Re: [PATCH V3 22/26] dt-bindings: interrupt-controller: C-SKY SMP intc

[Guo Ren]

On Thu, Sep 06, 2018 at 03:03:16PM +0200, Arnd Bergmann wrote:
> >         INTCG_base = ioremap(mfcr("cr<31, 14>"), INTC_SIZE);
> 
> It that reliable? I remember a similar situation with some registers on ARM
> that are usually identified through a special CPU register, but in some
> cases the SoC integrator put the wrong address in there, so we need to
> look up the address in DT anyway.
Yes, it's reliable. This interrupt is combined with CPU and not on AXI
or APB. Soc just give a hole in the address space and tell the CPU where
the address is with 20 wire-signals.

 Guo Ren