On Thu, Sep 27, 2012 at 9:43 AM, Ulf Hansson [off-list ref] wrote:

In my case for ux500 we use the mmci host driver. It is an ARM cross
SoC device driver, and I believe adding clock notifiers in the driver
to handle the voltage scale would complicate things quite a bit. It
seems a lot easier to let the clock driver handle this, especially
since the frequency will remain fixed after initialization. So in the
end I see now need and benefit for adding the clock notifiers in the
mmci host driver.

Right now it certainly cannot be done anyway, because some of the
clients to this driver does not implement the generic clock framework,
and thus it just won't compile anymore for them if we introduce that.

The patch does raise the issue of how to handle OPP requests
though.

Yours,
Linus Walleij