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diff --git a/tools/binman/README b/tools/binman/README
index 10dfe5766d..d6871946ab 100644
--- a/tools/binman/README
+++ b/tools/binman/README
@@ -593,6 +593,22 @@ the device tree. These can be used by U-Boot at run-time to find the location
of each entry.
+Compression
+-----------
+
+Binman support compression for 'blob' entries (those of type 'blob' and
+derivatives). To enable this for an entry, add a 'compression' property:
+
+ blob {
+ filename = "datafile";
+ compression = "lz4";
+ };
+
+The entry will then contain the compressed data, using the 'lz4' compression
+algorithm. Currently this is the only one that is supported.
+
+
+
Map files
---------