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SubjectRe: [PATCH 2/2] regulator: Add support for DA9121 regulator
On Thu, Oct 29, 2020 at 03:28:43PM +0000, Mark Brown wrote:
> On Thu, Oct 29, 2020 at 04:15:38PM +0100, Vincent Whitchurch wrote:
>
> > + config.init_data = of_get_regulator_init_data(dev, dev->of_node, &da9121_reg);
> > + if (!config.init_data)
> > + return -ENOMEM;
>
> Don't do this, the core can do the DT bit for you and there is no reason
> not to register the device if there are no constraints. -ENOMEM would
> also be the wrong error code here.

OK, thanks. I see that I can get the core to do it if I set ->of_match
on the regulator_desc. I also see that there is some flexibility about
the placement of the constraints (desc->regulators_node is optional).

This chip has only one output which the datasheet calls Buck1, so I will
remove this call and set the desc.of_match field to get the driver to
support a node which looks like this:

regulator@68 {
compatible = "dlg,da9121";
reg = <0x68>;

buck1 {
regulator-min-microvolt = <675000>;
regulator-max-microvolt = <825000>;
};
};

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