What is difference between "Bpi Banana Pi R64" and "Bpi Banana Pi R64 (rootdisk)"?

what is difference between Bpi Banana Pi R64 and Bpi Banana Pi R64 (rootdisk) in make menuconfig?

In the Bpi Banana Pi R64

target/linux/mediatek/files-4.19/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts

chosen {
		bootargs = "earlycon=uart8250,mmio32,0x11002000 console=ttyS0,115200n1 swiotlb=512";
};

In the Bpi Banana Pi R64 (rootdisk)

target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64-rootdisk.dts

chosen {
		stdout-path = "serial0:115200n8";
		bootargs = "earlycon=uart8250,mmio32,0x11002000 console=ttyS0,115200n1 swiotlb=512 root=/dev/mmcblk0p7 rootfstype=squashfs,f2fs";
};
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