On Sat, Feb 25, 2017 at 04:50:53PM +0200, Sakari Ailus wrote: > Although, the driver could try to work on the actual obtained frequency. > This is unlikely to work though, but it won't be very easy to figure out > why the device isn't working. Having the frequency in DT accessible for the > driver to check makes failing early with a clear error message possible. The below point actually makes the above matter a non-issue: this driver will contain a list of supported frequencies. A SMIA driver that I typically work with, for instance, does not. So I think your suggestion of having the CCF handle setting the frequency is a good one. > > > > > So, the clock frequency set up is delegated to CCF, and when any other > > than 25 MHz frequencies are got supported, that's only the matter of > > driver updates, DTBs won't be touched. > > Indeed. The new supported frequencies in this case will be additional > single values; there won't be ranges or such. The register lists the > driver contains are more or less dependent on that frequency. -- Kind regards, Sakari Ailus e-mail: sakari.ailus@xxxxxx XMPP: sailus@xxxxxxxxxxxxxx
