diff --git a/libraries/AP_HAL_ChibiOS/hwdef/MatekF405-bdshot/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/MatekF405-bdshot/hwdef.dat
index 6ae5e97e18..f696ce70d2 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/MatekF405-bdshot/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/MatekF405-bdshot/hwdef.dat
@@ -2,6 +2,12 @@
 
 include ../MatekF405/hwdef.dat
 
-undef PC6
+undef PC6 PC9 PA15 PA8
 
 PC6  TIM8_CH1 TIM8 PWM(1) GPIO(50) BIDIR
+PC9  TIM8_CH4 TIM8 PWM(4) GPIO(53) BIDIR
+# Can only do bdshot on M1-4, so give up DMA channels on M5/M6 to get full DMA on USART3 and UART4
+PA15 TIM2_CH1 TIM2 PWM(5) GPIO(54) NODMA
+PA8  TIM1_CH1 TIM1 PWM(6) GPIO(55) NODMA
+
+DMA_NOSHARE TIM8*