On Sun, Mar 24, 2013 at 10:27:32PM +0100, Pali Rohár wrote:
> On Sunday 24 March 2013 22:21:49 Mark Brown wrote:

> > You need to look at the schematics rather than the code here -
> > the code just needs to say what regulator supplies Vdd on the
> > device.

> This is problem, there is no info about regulator supplies for 
> this device...

Well, you should seek support from the board vendor then.  Or try
things like continuity tests (the regulator will have external
components, most likely there's at least a decoupling cap you can probe
at the device end too).