https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/arch/arm64/boot/dts/ti/k3-am64-main.dtsi?h=ti-linux-6.18.y#n1410

The icssg0_mdio devicetree node has

    clocks = <&k3_clks 62 3>;

using device id 62.

62 is a typo, the device id for icssg0 should be 81.