diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_pwm.c b/bsp/stm32/libraries/HAL_Drivers/drv_pwm.c
index ab3897c569cb64c4a8a0496baf50d9ee9c60362f..38958dddd4289688ec15787574c48bdfc0ad1263 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_pwm.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_pwm.c
@@ -213,8 +213,6 @@ static rt_err_t drv_pwm_get(TIM_HandleTypeDef *htim, struct rt_pwm_configuration
     {
 #if !defined(SOC_SERIES_STM32F0) && !defined(SOC_SERIES_STM32G0)
         tim_clock = HAL_RCC_GetPCLK2Freq() * 2;
-#else
-        tim_clock = HAL_RCC_GetPCLK2Freq();
 #endif
     }
     else
@@ -262,8 +260,6 @@ static rt_err_t drv_pwm_set(TIM_HandleTypeDef *htim, struct rt_pwm_configuration
     {
 #if !defined(SOC_SERIES_STM32F0) && !defined(SOC_SERIES_STM32G0)
         tim_clock = HAL_RCC_GetPCLK2Freq() * 2;
-#else
-        tim_clock = HAL_RCC_GetPCLK2Freq();
 #endif
     }
     else
diff --git a/components/drivers/include/drivers/rt_drv_pwm.h b/components/drivers/include/drivers/rt_drv_pwm.h
index 4b436758d93ddb18aa2c0dbf5892df93cd68a9f7..a4d64fbc1254dcec2f7d854ab4d49b0174ba559a 100644
--- a/components/drivers/include/drivers/rt_drv_pwm.h
+++ b/components/drivers/include/drivers/rt_drv_pwm.h
@@ -21,9 +21,9 @@
 
 struct rt_pwm_configuration
 {
-    rt_uint32_t channel;        /* 0-n */
-    rt_uint32_t period;         /* unit:ns 1ns~4.29s:1Ghz~0.23hz */
-    rt_uint32_t pulse;          /* unit:ns (pulse<=period) */
+    rt_uint32_t channel; /* 0-n */
+    rt_uint32_t period;  /* unit:ns 1ns~4.29s:1Ghz~0.23hz */
+    rt_uint32_t pulse;   /* unit:ns (pulse<=period) */
 
     /*
      * RT_TRUE  : The channel of pwm is complememtary.