diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..16753cb
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "libs/rtl_libs"]
+	path = libs/rtl_libs
+	url = https://git.radiophotonics.ru/baulin.fa/rtl_libs.git
+[submodule "libs/verilog-axi"]
+	path = libs/verilog-axi
+	url = https://github.com/alexforencich/verilog-axi.git
diff --git a/libs/rtl_libs b/libs/rtl_libs
new file mode 160000
index 0000000..338f30c
--- /dev/null
+++ b/libs/rtl_libs
@@ -0,0 +1 @@
+Subproject commit 338f30c0d7224feb55a37be725a00f38dce53583
diff --git a/libs/verilog-axi b/libs/verilog-axi
new file mode 160000
index 0000000..516bd5d
--- /dev/null
+++ b/libs/verilog-axi
@@ -0,0 +1 @@
+Subproject commit 516bd5dadc3365b7f9e225d2af8fe0b8d804fe53