diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..5ade8be2a
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "tomlc99"]
+	path = tomlc99
+	url = https://github.com/thesofproject/tomlc99.git
+	branch = master
diff --git a/tomlc99 b/tomlc99
new file mode 160000
index 000000000..e3a03f5ec
--- /dev/null
+++ b/tomlc99
@@ -0,0 +1 @@
+Subproject commit e3a03f5ec7d8d33be705c5ce8a632d998ce9b4d1