ubi: ubifs: Add documentation for README

Describe the needed CONFIG tokens to enable UBI and UBIFS support.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/README b/README
index 276fac9c6e..81d3681dca 100644
--- a/README
+++ b/README
@@ -2806,6 +2806,22 @@ FIT uImage format:
                 Adds the MTD partitioning infrastructure from the Linux
                 kernel. Needed for UBI support.
 
+- UBI support
+                CONFIG_CMD_UBI
+
+                Adds commands for interacting with MTD partitions formatted
+                with the UBI flash translation layer
+
+                Requires also defining CONFIG_RBTREE
+
+- UBIFS support
+                CONFIG_CMD_UBIFS
+
+                Adds commands for interacting with UBI volumes formatted as
+                UBIFS.  UBIFS is read-only in u-boot.
+
+                Requires UBI support as well as CONFIG_LZO
+
 - SPL framework
                 CONFIG_SPL
                 Enable building of SPL globally.