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SubjectRe: [GIT PULL] Andes(nds32) Port for Linux 4.17
On Mon, Apr 2, 2018 at 6:04 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> On Sun, Apr 1, 2018 at 11:01 PM, Greentime Hu <green.hu@gmail.com> wrote:
>>
>> This tag contains the core nds32 Linux port(including interrupt controller
>> driver and timer driver), which has been through 7 rounds of review on mailing
>> list.
>
> Can I get an overview of the nds32 architecture (uses, quirks, reasons
> for existing?) to add to the initial merge message? Just an overview,
> not some kind of architecture manual thing.
>
> Yeah, yeah, I can google it myself and write something up, but it's
> the kind of information I'd like to see when merging an architecture I
> hadn't really ever heard about, and I suspect most others haven't
> either.

The non-marketing description is that this is a fairly conventional
(in a good way) low-end RISC architecture that is usually integrated
into custom microcontroller and SoC designs, competing with
the similar ARM32, ARC, MIPS32, RISC-V, Xtensa and (currently
under review) C-Sky architectures that occupy the same space.

The most interesting bit from my perspective is that Andestech
are already selling a new generation of CPU cores that are
based on 32-bit and 64-bit RISC-V, but are still supporting enough
customers on the existing cores to invest in both.

Arnd

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