diff --git a/.gitmodules b/.gitmodules
index 1a5ae2c5d..e075e0c62 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -116,3 +116,6 @@
 [submodule "hw/mcu/silabs/cmsis-dfp-efm32gg12b"]
 	path = hw/mcu/silabs/cmsis-dfp-efm32gg12b
 	url = https://github.com/cmsis-packs/cmsis-dfp-efm32gg12b
+[submodule "hw/mcu/renesas"]
+	path = hw/mcu/renesas
+	url = https://github.com/kkitayam/rx_device.git
diff --git a/hw/mcu/renesas b/hw/mcu/renesas
new file mode 160000
index 000000000..4a51dfe6e
--- /dev/null
+++ b/hw/mcu/renesas
@@ -0,0 +1 @@
+Subproject commit 4a51dfe6ecdf936d2d89f223f069e24a2d109207