Supported File systems

Below are the file systems supported in u-boot against flash devices for platform and Zynq UltraScale+. "Raw" in below table means that it supports raw read/write to respective flash devices without any need of file systems.

Flash	Zynq	ZynqUS+
SD/eMMC	Raw, FAT, EXT2, EXT4	Raw, FAT, EXT2, EXT4
USB	FAT, EXT2, EXT4	FAT, EXT2, EXT4
SATA	----NA----	FAT, EXT2, EXT4
QSPI	Raw, UBIFS	Raw, UBIFS
Nand	Raw, UBIFS, JFFS2	Raw, UBIFS, JFFS2

Issues/Workaround

Please note that SD does not work in SD3.0 UHS modes by default. The dt parameter no-1-8-v has to be removed from corresponding sdhci node to work in UHS mode. Having no-1-8-v in sdhci node makes it to operate till SD High speed only.