diff --git a/tools/binman/README.entries b/tools/binman/README.entries
index f45f514..bf8edce 100644
--- a/tools/binman/README.entries
+++ b/tools/binman/README.entries
@@ -311,6 +311,46 @@
 
 
 
+Entry: fit: Entry containing a FIT
+----------------------------------
+
+This calls mkimage to create a FIT (U-Boot Flat Image Tree) based on the
+input provided.
+
+Nodes for the FIT should be written out in the binman configuration just as
+they would be in a file passed to mkimage.
+
+For example, this creates an image containing a FIT with U-Boot SPL:
+
+    binman {
+        fit {
+            description = "Test FIT";
+
+            images {
+                kernel@1 {
+                    description = "SPL";
+                    os = "u-boot";
+                    type = "rkspi";
+                    arch = "arm";
+                    compression = "none";
+                    load = <0>;
+                    entry = <0>;
+
+                    u-boot-spl {
+                    };
+                };
+            };
+        };
+    };
+
+Properties:
+    fit,external-offset: Indicates that the contents of the FIT are external
+        and provides the external offset. This is passsed to mkimage via
+        the -E and -p flags.
+
+
+
+
 Entry: fmap: An entry which contains an Fmap section
 ----------------------------------------------------