regtools: update xml format documentation
Change-Id: I7e293532983f350a6f7cd9c7bc2bc6633c8fd3f2
Reviewed-on: http://gerrit.rockbox.org/671
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
diff --git a/utils/regtools/desc/XML.txt b/utils/regtools/desc/XML.txt
index 15164a4..a90f875 100644
--- a/utils/regtools/desc/XML.txt
+++ b/utils/regtools/desc/XML.txt
@@ -100,6 +100,8 @@
explicit formula can be described as part of the format. There is no specific
requirement on the formula except that the register addresses be indexed by
a variable "n" which range from 0 to N-1 where N is the number of address.
+The formula is not used for anything except header generation where it is
+handy to have a formula rather a long list of conditionals.
The following properties are defined:
- "string" (mandatory,string): the equation describing the addresses.
@@ -130,4 +132,4 @@
Example:
<value name="DIV_BY_1" value="0x0" />
-<value name="DIV_BY_2" value="0x1" />
\ No newline at end of file
+<value name="DIV_BY_2" value="0x1" />