[PATCH v2 1/5] mfd: max14577: Add max14577 MFD driver core

[Krzysztof Kozlowski]

On Thu, 2013-11-21 at 12:20 +0000, Lee Jones wrote:
(...)
> > > > +struct max14577_regulator_platform_data {
> > > > +	int id;
> > > > +	struct regulator_init_data *initdata;
> > > > +	struct device_node *of_node;
> > > 
> > > Do you ever set this? What's the point of it is it's set in the device?
> > 
> > Do you mean the whole struct max14577_regulator_platform_data or only
> > some member of it (of_node?)?
> 
> Initially only the of_node. Usually MFD children are able to call back
> into their parent to fetch these details. Also mfd_add_device() goes
> out of its way to fill in the child's own of_node.

The of_node is needed for regulator driver. It is passed in struct regulator_config
to devm_regulator_register():
	config.of_node = pdata->regulators[i].of_node;
	info->regulators[i] = devm_regulator_register(&pdev->dev,
	                              &supported_regulators[id], &config);


Best regards,
Krzysztof