Add the core io-domain nodes to grf and pmugrf which individual
boards than just have to enable and add the necessary supplies to.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
                reg = <0x0 0xff320000 0x0 0x1000>;
                #address-cells = <1>;
                #size-cells = <1>;
+
+               pmu_io_domains: io-domains {
+                       compatible = "rockchip,rk3399-pmu-io-voltage-domain";
+                       status = "disabled";
+               };
        };
 
        spi3: spi@ff350000 {
                #address-cells = <1>;
                #size-cells = <1>;
 
+               io_domains: io-domains {
+                       compatible = "rockchip,rk3399-io-voltage-domain";
+                       status = "disabled";
+               };
+
                emmc_phy: phy@f780 {
                        compatible = "rockchip,rk3399-emmc-phy";
                        reg = <0xf780 0x24>;