- jffs2 requires the mtd package for the mtd-host tools.

package/mtd/Config.in

@@ -17,6 +17,7 @@ choice
 config BR2_PACKAGE_MTD_ORIG
 	bool "Default source"
 	depends on BR2_PACKAGE_MTD
+	default y
 	help
 	  Use the stable release.
 

target/jffs2/Config.in

@@ -1,6 +1,7 @@
 config BR2_TARGET_ROOTFS_JFFS2
 	bool "jffs2 root filesystem"
 	default n
+	select BR2_PACKAGE_MTD
 	help
 	  Build a jffs2 root filesystem