diff --git a/.gitmodules b/.gitmodules
index c7b396187..b5a2feaca 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,9 +1,6 @@
 [submodule "hw/mcu/nordic/nrfx"]
 	path = hw/mcu/nordic/nrfx
 	url = https://github.com/NordicSemiconductor/nrfx.git
-[submodule "hw/mcu/microchip/samd/asf4"]
-	path = hw/mcu/microchip/samd/asf4
-	url = https://github.com/adafruit/asf4.git
 [submodule "tools/uf2"]
 	path = tools/uf2
 	url = https://github.com/microsoft/uf2.git
diff --git a/hw/mcu/microchip/samd/asf4 b/hw/mcu/microchip/samd/asf4
deleted file mode 160000
index 82fe3aa05..000000000
--- a/hw/mcu/microchip/samd/asf4
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 82fe3aa05bc3b9f4956ee775c748a3885443f66b