Missing 'assigned-clocks' in usdhc node of i.MX8MQ/MM/MN dtsi?

[Schrempf Frieder]

Hi,

I wonder why imx8mq.dtsi, imx8mm.dtsi and imx8mn.dtsi have 
'assigned-clocks' and 'assigned-clock-rates' set for all usdhc nodes, 
except for usdhc2.

Is this on purpose? Is it a flaw?

Thanks,
Frieder

Extract from imx8mm.dtsi:

usdhc1: mmc@30b40000 {
        [...]
        assigned-clocks = <&clk IMX8MM_CLK_USDHC1>;
        assigned-clock-rates = <400000000>;
        [...]
};

usdhc2: mmc@30b50000 {
        compatible = "fsl,imx8mm-usdhc", "fsl,imx7d-usdhc";
        reg = <0x30b50000 0x10000>;
        interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&clk IMX8MM_CLK_DUMMY>,
                 <&clk IMX8MM_CLK_NAND_USDHC_BUS>,
                 <&clk IMX8MM_CLK_USDHC2_ROOT>;
        clock-names = "ipg", "ahb", "per";
        fsl,tuning-start-tap = <20>;
        fsl,tuning-step= <2>;
        bus-width = <4>;
        status = "disabled";
};

usdhc3: mmc@30b60000 {
        [...]
        assigned-clocks = <&clk IMX8MM_CLK_USDHC3_ROOT>;
        assigned-clock-rates = <400000000>;
        [...]
};