diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000000000000000000000000000000000..619739672f5636a9995fc3c62d65ebfaa1ca08ef
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "socket/uart_axi_master"]
+	path = socket/uart_axi_master
+	url = https://github.com/ultraembedded/core_dbg_bridge.git
diff --git a/socket/uart_axi_master b/socket/uart_axi_master
new file mode 160000
index 0000000000000000000000000000000000000000..3ea8f99cb458acf3f6cfe27862afe77d560caf08
--- /dev/null
+++ b/socket/uart_axi_master
@@ -0,0 +1 @@
+Subproject commit 3ea8f99cb458acf3f6cfe27862afe77d560caf08