[PATCH v5] spi: orion.c: Add direct access mode

[Mark Brown]

On Mon, Apr 18, 2016 at 12:51:55PM +0200, Arnd Bergmann wrote:

> This would be easier if have a conclusive proof that 1MB per CS always enough.
> Is this something that is guaranteed in the SPI spec or the documentation for
> this controller?

There's no spec for SPI but if there were it'd be hard to see it
imposing a limit, one can transfer data as long as the bus is clocked
(which some things like ADCs and DACs make use of).
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