fdtbus_regulator_supports_voltage
error = fdtbus_regulator_supports_voltage(sc->sc_reg_vqmmc, uvol, uvol);
error = fdtbus_regulator_supports_voltage(sc->sc_reg_vqmmc, uvol, uvol);
error = fdtbus_regulator_supports_voltage(sc->sc_reg_vqmmc, uvol, uvol);
error = fdtbus_regulator_supports_voltage(sc->sc_reg_vqmmc, uvol, uvol);
error = fdtbus_regulator_supports_voltage(esc->sc_vqmmc, uvol, uvol);
int fdtbus_regulator_supports_voltage(struct fdtbus_regulator *,