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
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