2 -----------------------
5 - compatible: rockchip,rk3399-emmc-phy
6 - rockchip,grf : phandle to the syscon managing the "general
8 - #phy-cells: must be 0
9 - reg: PHY configure reg address offset in "general
15 compatible = "rockchip,rk3399-emmc-phy";
16 rockchip,grf = <&grf>;