On Mon, Oct 24, 2011 at 02:43:58PM +0530, Rajendra Nayak wrote:

Case 2:
One device for all regulators:

DT nodes look something like this

regulators {
	reg1: reg at 1 {
			...
			...
	};

	reg2: reg at 2 {
			...
			...
	};
};

The regulator driver probes only one device and the dev->of_node
points to the "regulators" node above.

The mc13892 example I put in the reply to Grant demonstrates that
for some case, dev->of_node is NULL (devices are created by mfd core).

The regulator driver then based on compatible property extracts
and registers all the child nodes of "regulators" (for ex: reg1, reg2
above) with each call to regulator_register and passes the child nodes
as of_node to be associated with the regulator device.

I still think the discovery of all the child nodes of "regulators" does
not necessarily need to be done in regulator driver.  Instead, it can
be done in regulator core.

-- 
Regards,
Shawn