4 files changed, 16 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32F1xx/hal_lld.c b/os/hal/platforms/STM32F1xx/hal_lld.c
index 53bafb1b5..9fda0b3e7 100644
--- a/os/hal/platforms/STM32F1xx/hal_lld.c
+++ b/os/hal/platforms/STM32F1xx/hal_lld.c
@@ -215,6 +215,10 @@ void stm32_clock_init(void) {
     ;                                       /* Wait until HSI is the source.*/
 
 #if STM32_HSE_ENABLED
+#if defined(STM32_HSE_BYPASS)
+  /* HSE Bypass.*/
+  RCC->CR |= RCC_CR_HSEBYP;
+#endif
   /* HSE activation.*/
   RCC->CR |= RCC_CR_HSEON;
   while (!(RCC->CR & RCC_CR_HSERDY))
diff --git a/os/hal/platforms/STM32F2xx/hal_lld.c b/os/hal/platforms/STM32F2xx/hal_lld.c
index 75d217c69..8cfad815c 100644
--- a/os/hal/platforms/STM32F2xx/hal_lld.c
+++ b/os/hal/platforms/STM32F2xx/hal_lld.c
@@ -149,6 +149,10 @@ void stm32_clock_init(void) {
     ;                           /* Waits until HSI is stable.               */
 
 #if STM32_HSE_ENABLED
+#if defined(STM32_HSE_BYPASS)
+  /* HSE Bypass.*/
+  RCC->CR |= RCC_CR_HSEBYP;
+#endif
   /* HSE activation.*/
   RCC->CR |= RCC_CR_HSEON;
   while ((RCC->CR & RCC_CR_HSERDY) == 0)
diff --git a/os/hal/platforms/STM32F4xx/hal_lld.c b/os/hal/platforms/STM32F4xx/hal_lld.c
index 44de90602..8982da7b9 100644
--- a/os/hal/platforms/STM32F4xx/hal_lld.c
+++ b/os/hal/platforms/STM32F4xx/hal_lld.c
@@ -151,6 +151,10 @@ void stm32_clock_init(void) {
     ;                           /* Waits until HSI is stable.               */
 
 #if STM32_HSE_ENABLED
+#if defined(STM32_HSE_BYPASS)
+  /* HSE Bypass.*/
+  RCC->CR |= RCC_CR_HSEBYP;
+#endif
   /* HSE activation.*/
   RCC->CR |= RCC_CR_HSEON;
   while ((RCC->CR & RCC_CR_HSERDY) == 0)
diff --git a/os/hal/platforms/STM32L1xx/hal_lld.c b/os/hal/platforms/STM32L1xx/hal_lld.c
index 1d28df62b..43ba6832d 100644
--- a/os/hal/platforms/STM32L1xx/hal_lld.c
+++ b/os/hal/platforms/STM32L1xx/hal_lld.c
@@ -165,6 +165,10 @@ void stm32_clock_init(void) {
 #endif
 
 #if STM32_HSE_ENABLED
+#if defined(STM32_HSE_BYPASS)
+  /* HSE Bypass.*/
+  RCC->CR |= RCC_CR_HSEBYP;
+#endif
   /* HSE activation.*/
   RCC->CR |= RCC_CR_HSEON;
   while ((RCC->CR & RCC_CR_HSERDY) == 0)