fix(nucleo_G474RE): wrong SystemClock_Config configuration

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

variants/STM32G4xx/G473R(B-C-E)T_G474R(B-C-E)T_G483RET_G484RET/variant_NUCLEO_G474RE.cpp

@@ -106,22 +106,23 @@ WEAK void SystemClock_Config(void)
 {
   RCC_OscInitTypeDef RCC_OscInitStruct = {};
   RCC_ClkInitTypeDef RCC_ClkInitStruct = {};
-#ifdef USBCON
   RCC_PeriphCLKInitTypeDef PeriphClkInit = {};
-#endif
 
   /* Configure the main internal regulator output voltage */
   HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST);
   /* Initializes the CPU, AHB and APB busses clocks */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48 | RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_HSI48
+                                     | RCC_OSCILLATORTYPE_HSE;
   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
   RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
-  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV2;
-  RCC_OscInitStruct.PLL.PLLN = 28;
+  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV6;
+  RCC_OscInitStruct.PLL.PLLN = 85;
   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
-  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV6;
   RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
     Error_Handler();
@@ -134,18 +135,17 @@ WEAK void SystemClock_Config(void)
   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
-  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_8) != HAL_OK) {
+  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK) {
     Error_Handler();
   }
 
-#ifdef USBCON
   /* Initializes the peripherals clocks */
-  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
+  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_LPUART1 | RCC_PERIPHCLK_USB;
+  PeriphClkInit.Lpuart1ClockSelection = RCC_LPUART1CLKSOURCE_HSI;
   PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) {
     Error_Handler();
   }
-#endif
 }
 
 #ifdef __cplusplus