[Bug 1000819] Add support for Atmel AT91SAM9263

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--- Comment #33 from Daniel Helgason <dhelgason@shaw.ca> 2011-05-24 19:28:12 BST ---
(In reply to comment #29)
> Hi,
> 
> ...As such the AT91SAM9
> series should be implemented as 4 separate platforms under this structure,
> although they probably be using common peripheral devices which may also be
> shared with the rest of the AT91 family...

That's the way I see it, too.

> ...The
> question I see is do we need to introduce a new set of devices for the AT91SAM9
> series, only if there are significant enhancements or interoperability issues
> would be my humble opinion....

I don't understand. Do you mean all AT91SAM9 SoC in one AT91SAM9 package? Or
additional AT91 peripherals?

> ...The problem I see with supporting the SAM3 from the
> same IO package is that the peripheral bus structure usually implemented on
> cortex devices is not the same as the earlier models. Perhaps the IO package
> should be divided by peripheral bus structure AHB,AMBA etc. Okay that's enough
> from me.

About the only problem I had with using existing AT91 drivers with the SAM3 is
that, under Cortex arch, the interrupt number is no longer the same as the AT91
peripheral ID. Also, I had to duplicate all the AT91 peripheral definitions
into the SAM3 port. Way too much duplication. That's why I think having the
AT91 package just be a I/O support package would be a good thing.

Dan H.

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