EBK21

There were changes merged fairly recently. Perhaps try this: https://github.com/armbian/build/pull/9600

PR opened https://github.com/armbian/build/pull/3906

Workaround is found. It's literaly a copypaste based on https://github.com/u-boot/u-boot/commit/a246e21351778a93805b3f52302a420f4b268601#diff-ccc56a581b4ac88eb0c52ec34ef3ede020bd4deaff8ab53d3fdcfa85d8438b38

Decompile the dtb,find and do the following.
 
BEGIN
                ethernet@5020000 {
                        compatible = "allwinner,sun50i-h6-emac\0allwinner,sun50i-a64-emac";
                        syscon = <0x30>;
                        reg = <0x5020000 0x10000>;
                        interrupts = <0x00 0x0c 0x04>;
                        interrupt-names = "macirq";
                        resets = <0x04 0x21>;
                        reset-names = "stmmaceth";
                        clocks = <0x04 0x54>;
                        clock-names = "stmmaceth";
                        status = "okay";
                        pinctrl-names = "default";
                        pinctrl-0 = <0x31>;
                        phy-mode = "rgmii-id";
                        phy-handle = <0x32>;
                        phy-supply = <0x33>;
#Add the following entries
                        snps,reset-gpio = <0x1f 0x03 0x0e 0x01>;
                        snps,reset-delays-us = <0 10000 1000000>;
                        snps,reset-active-low;
#End adding
                        allwinner,rx-delay-ps = <0xc8>;
                        allwinner,tx-delay-ps = <0x12c>;
                        phandle = <0x76>;
                        mdio {
                                compatible = "snps,dwmac-mdio";
                                #address-cells = <0x01>;
                                #size-cells = <0x00>;
                                phandle = <0x77>;
                                ethernet-phy@1 {
                                        compatible = "ethernet-phy-ieee802.3-c22";
                                        reg = <0x01>;
#Comment out the following entries
                                        #reset-gpios = <0x1f 0x03 0x0e 0x01>;
                                        #reset-assert-us = <0x3a98>;
                                        #reset-deassert-us = <0x9c40>;
#End commenting
                                        phandle = <0x32>;
                                };
                        };
                };
END