Due to v5.7-rc1 sync the SD controller nodes in rk3399.dtsi have HCLK_SD assigned-clocks which are usually required for Linux and don't require to handle them in U-Boot. assigned-clocks = <&cru HCLK_SD>; So, mark them as empty in clock otherwise device probe on those SD controllers would fail. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>