diff --git a/libbsd.py b/libbsd.py
index 0673eb55..6997aefd 100644
--- a/libbsd.py
+++ b/libbsd.py
@@ -5201,6 +5201,8 @@ class imx(builder.Module):
         self.addKernelSpaceSourceFiles(
             [
                 'sys/arm/freescale/imx/imx6_ccm.c',
+                'sys/arm/freescale/imx/imx6_usbphy.c',
+                'sys/dev/usb/controller/ehci_imx.c',
             ],
             mm.generator['source']()
         )
diff --git a/rtemsbsd/include/bsp/nexus-devices.h b/rtemsbsd/include/bsp/nexus-devices.h
index d779ea52..f27d7a7e 100644
--- a/rtemsbsd/include/bsp/nexus-devices.h
+++ b/rtemsbsd/include/bsp/nexus-devices.h
@@ -137,6 +137,11 @@ RTEMS_BSD_DEFINE_NEXUS_DEVICE(ofwbus, 0, 0, NULL);
 SYSINIT_DRIVER_REFERENCE(simplebus, ofwbus);
 
 SYSINIT_DRIVER_REFERENCE(ccm, simplebus);
+SYSINIT_DRIVER_REFERENCE(ehci, simplebus);
+SYSINIT_DRIVER_REFERENCE(usbphy, simplebus);
+SYSINIT_DRIVER_REFERENCE(usbus, ehci);
+RTEMS_BSD_DRIVER_USB;
+RTEMS_BSD_DRIVER_USB_MASS;
 
 SYSINIT_DRIVER_REFERENCE(ffec, simplebus);
 SYSINIT_DRIVER_REFERENCE(ukphy, miibus);