Re: [PATCH v4 01/11] mfd: add pruss mfd driver.

[Mark Brown]

On Sat, May 14, 2011 at 10:33:53PM +0200, Arnd Bergmann wrote:

> I guess drivers/mfd would be a better place than drivers/misc, but it might not
> need to be an mfd driver in the sense that it registers mfd cells.

Yes, it might be more sensible to just open code.  OTOH mfd_cell is
marginally easier to use.

> The more important point is to remove the device registration from the board
> file. You definitely should not have the cells in the board file, but replacing
> them with platform devices in the board file makes it no better.

Agreed entirely, it should be something higher level than that.

> My whole point has been that you register them from the main pruss driver
> based on run-time data instead of compile-time pre-configured stuff in the
> board file.

I'm not so sure - if the usage is fixed as a result of the pins on the
device being wired a CAN bus then it seems reasonable to tell the system
about that so it'll stop the user trying to run SPI or something against
it at runtime.
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