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-rw-r--r--doc/uImage.FIT/source_file_format.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/uImage.FIT/source_file_format.txt b/doc/uImage.FIT/source_file_format.txt
index d2793a195d..d701b9bb76 100644
--- a/doc/uImage.FIT/source_file_format.txt
+++ b/doc/uImage.FIT/source_file_format.txt
@@ -164,7 +164,9 @@ the '/images' node should have the following layout:
- data : Path to the external file which contains this node's binary data.
- compression : Compression used by included data. Supported compressions
are "gzip" and "bzip2". If no compression is used compression property
- should be set to "none".
+ should be set to "none". If the data is compressed but it should not be
+ uncompressed by U-Boot (e.g. compressed ramdisk), this should also be set
+ to "none".
Conditionally mandatory property:
- os : OS name, mandatory for types "kernel" and "ramdisk". Valid OS names