DT support for input-supply of regulator.

Hi Mark,
When mapping the dts file for different regulator, observe that the input input-supply is not getting correctly.

I have following structure in the dts file for registering the regulators:

       pmu: tps65910@d2 {
                compatible = "ti,tps65910";
                reg = <0xd2>;

                #gpio-cells = <2>;
                gpio-controller;

::::::::::

                regulators {
                        vdd1_reg: vdd1 {
                                regulator-min-microvolt = < 600000>;
                                regulator-max-microvolt = <1500000>;
                        };
                        vdd2_reg: vdd2 {
                                regulator-min-microvolt = < 600000>;
                                regulator-max-microvolt = <1500000>;
                                vin-supply = <&vdd1_reg>
                        };
                };
    };

Now the regulator vdd1 get register properly, but when looking for the registration for vdd2, it is not able to identify the init_data->supply_regulator as we do not parse it. So for this, I added the code in case on such
In function of_get_regulation_constraints()
if (of_find_property(np, "vin-supply", NULL))
(*init_data)->supply_regulator = "vin";

So when vdd2 registration happen, it looks for the vin-supply.

But when it looks for the device node containing this regulator, it starts searching of the props from the dev_node of parent device i.e. pmu: tps65910@d2 and in search, it does not found the vin-supply property. It got property for compatible reg, gpio_cell, gpio-controller and then no more property.

Is there any issue in laying down the regulator structure?

Thanks,
Laxman

I'm sorry but I'm having a really hard time parsing what you're saying above. It sounds like there's some sort of device tree specific bug that needs fixing.

I found small issue in core regulator and the tps65910 regulator driver where it was not passing correct regulator node. After fixing this, it worked fine. I already sent the patches for review.

Thanks,
Laxman