diff --git a/board/Marvell/octeontx2_cn913x/MAINTAINERS b/board/Marvell/octeontx2_cn913x/MAINTAINERS
index d469e16..74c5fd1 100644
--- a/board/Marvell/octeontx2_cn913x/MAINTAINERS
+++ b/board/Marvell/octeontx2_cn913x/MAINTAINERS
@@ -3,3 +3,4 @@
 S:	Maintained
 F:	board/Marvell/octeontx2_cn913x/
 F:	configs/mvebu_crb_cn9130_defconfig
+F:	configs/mvebu_db_cn9130_defconfig
diff --git a/board/Marvell/octeontx2_cn913x/README b/board/Marvell/octeontx2_cn913x/README
new file mode 100644
index 0000000..3d0c8b3
--- /dev/null
+++ b/board/Marvell/octeontx2_cn913x/README
@@ -0,0 +1,24 @@
+Not all board variants are represented with a specific defconfig in
+mainline U-Boot. Here a small documentation on how to generate U-Boot
+images for all other board variants, available via different dts
+files and defconfigs.
+
+Use a different dts than in the defconfig:
+
+make DEVICE_TREE=cn9131-db-B
+
+Use a different boot device (e.g. MMC or NAND instead of SPI NOR):
+
+For MMC, please make the following changes to the defconfig via
+e.g. "make menuconfig":
+Remove CONFIG_MVEBU_SPI_BOOT
+Select CONFIG_MVEBU_MMC_BOOT
+Remove CONFIG_ENV_IS_IN_SPI_FLASH
+Select CONFIG_ENV_IS_IN_MMC
+
+For NAND, please make the following changes to the defconfig via
+e.g. "make menuconfig":
+Remove CONFIG_MVEBU_SPI_BOOT
+Select CONFIG_MVEBU_NAND_BOOT
+Remove CONFIG_ENV_IS_IN_SPI_FLASH
+Select CONFIG_ENV_IS_IN_NAND