diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..af3617d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "libosmo-dsp"]
+	path = libosmo-dsp
+	url = git://git.osmocom.org/libosmo-dsp
diff --git a/libosmo-dsp b/libosmo-dsp
new file mode 160000
index 0000000..e97293f
--- /dev/null
+++ b/libosmo-dsp
@@ -0,0 +1 @@
+Subproject commit e97293f89b4b02e6e857fbd6fb9ac60cbbd0595d