platform data and mfd design question

[Mark Brown]

On Wed, Feb 16, 2011 at 09:48:33AM +0100, Linus Walleij wrote:
> On 02/15/2011 10:51 PM, Abhijeet Dharmapurikar wrote:
> >Msm on the other hand declares the struct mfd_cell subdevice[] array in
> >the board file and passes this on to the core driver via platfom data.

> This way the platform data tells the core driver what kind of
> silicon it has "hey, PM8058, guess what, you have an RTC!"
> which looks backwards to me, especially given that it does
> not need any fancy platform data at all, just two IRQ numbers
> which the core driver can very well handle.

Indeed, and the RTC would still be useful even without IRQ support I
imagine (it should still be able to tell you the time).