Paul Sokolovsky wrote:
> Hello Dmitry,
>
> Tuesday, May 1, 2007, 4:53:09 PM, you wrote:
>
>> I think your referring to the term "SoC (system-on-chip)" is confusing
>> (at least for me). You rather consider companion chips than SoCs.
>
>> Yes, any chip integrating a number of controllers could be considered
>> as a system-on-chip but if the chip doesn't make sense without
>> some master chip (processor) I'd consider the chip as a companion
>> (to the processor) chip.
>
> Ditto for me - I find "companion" thing confusing. What's
> important for the RFC/topic discussed is that it is integrated
> controller with many diversified functions, not what it is helper to
> something.
It's exactly helper. It helps to expand functionality of a main
processor.
> I understand that for many people SoC means CPU with ties,
> but IMHO, it's less stretch to take such chip, remove CPU, and still
> call it a SoC,
I do not know any chip that would be "just add a CPU and you'll get
a complete system", do you?
> than call an integrated audio/touchscreen controller a
> companion chip (well, of course it is; and RAM chip too ;-) ).
>
> Either way, I don't pledge to be a HW designer with
> contemporary lexicon. The aim was simple - as a single word would be
> too ambiguous, general, or vice-versa, omitting, then acronym is
> needed, hopefully existing, and not new, and SoC is the most fitting
> TLA, IMHO.
If you used ASIC acronym it would be more appropriate and not so
ambiguous.
What kind of chips you deal with does not fit ASIC acronym?
> But I'm open to specific suggestions for improvement. For
> example, if I was to write a Documentation/ entry for that, I'd mention
> companion chips, peripheral/integrated controllers, etc.
"peripheral/integrated controllers" are also within companion chips.
Every type of CMOS devices may be a part of processor chip or
may be a standalone chip as well as a group of CMOS devices
may be a part of the proc chip or may organize a standalone chip.
When your chip is missing a processor device then it is not
a system but a part of a system, you can not build a complete
system on a such chip, so you can not call it a "system-on-chip".
> But renaming
> drivers/soc/ to drivers/companion/ would be more confusing,
Not for me.
> as the
> concept described is not tied to companion chips per se (even though
> many of chips we (handhelds.org) deal with, can be classified as
> such).
>
>
Regards,
Dmitry
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