diff --git a/.gitmodules b/.gitmodules
index 35e6870c..bcb76966 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -31,3 +31,6 @@
 [submodule "lib/macos-minimal-sdk"]
 	path = lib/macos-minimal-sdk
 	url = https://github.com/aykevl/macos-minimal-sdk.git
+[submodule "lib/renesas-svd"]
+	path = lib/renesas-svd
+	url = git@github.com:tinygo-org/renesas-svd.git
diff --git a/lib/renesas-svd b/lib/renesas-svd
new file mode 160000
index 00000000..03d76880
--- /dev/null
+++ b/lib/renesas-svd
@@ -0,0 +1 @@
+Subproject commit 03d76880854b9042f5d043f4355cdf8eef522fa5