diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CubeBlack/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/CubeBlack/hwdef.dat
index 03c43ff8cb..0d88c650f4 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CubeBlack/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CubeBlack/hwdef.dat
@@ -18,3 +18,6 @@ undef PB0
 undef PB1
 PB0 PB0_ADC ADC1 SCALE(1)
 PB1 PB1_ADC ADC1 SCALE(1)
+
+SPIDEV icm20948_ext   SPI4 DEVID1  MPU_EXT_CS   MODE3  4*MHZ  8*MHZ
+SPIDEV icm20602_ext   SPI4 DEVID3  GYRO_EXT_CS  MODE3  4*MHZ  8*MHZ