Revert "stm32: Use IC9 clock source for slow peripherals."

This reverts commit 47e678e.

Author: iabdalkader

ports/stm32/powerctrlboot.c

@@ -485,10 +485,10 @@ void SystemClock_Config(void) {
     LL_RCC_IC11_SetDivider(1);
     LL_RCC_IC11_Enable();
 
-    // Configure IC9 at 100MHz for slower peripherals.
-    LL_RCC_IC9_SetSource(LL_RCC_ICCLKSOURCE_PLL1);
-    LL_RCC_IC9_SetDivider(8);
-    LL_RCC_IC9_Enable();
+    // Configure IC14 at 100MHz for slower peripherals.
+    LL_RCC_IC14_SetSource(LL_RCC_ICCLKSOURCE_PLL1);
+    LL_RCC_IC14_SetDivider(8);
+    LL_RCC_IC14_Enable();
 
     // Enable buses.
     LL_BUS_EnableClock(LL_APB5 | LL_APB4 | LL_APB3 | LL_APB2 | LL_APB1 | LL_AHB5 | LL_AHB4 | LL_AHB3 | LL_AHB2 | LL_AHB1);

ports/stm32/spi.c

@@ -184,9 +184,9 @@ void spi_init0(void) {
     LL_RCC_SetSPIClockSource(LL_RCC_SPI3_CLKSOURCE_PCLK1);
     LL_RCC_SetSPIClockSource(LL_RCC_SPI6_CLKSOURCE_PCLK4);
 
-    // SPI4/5 clock configuration, IC9 (max 100MHz).
-    LL_RCC_SetSPIClockSource(LL_RCC_SPI4_CLKSOURCE_IC9);
-    LL_RCC_SetSPIClockSource(LL_RCC_SPI5_CLKSOURCE_IC9);
+    // SPI4/5 clock configuration, IC14 (max 100MHz).
+    LL_RCC_SetSPIClockSource(LL_RCC_SPI4_CLKSOURCE_IC14);
+    LL_RCC_SetSPIClockSource(LL_RCC_SPI5_CLKSOURCE_IC14);
     #endif
 }
 

ports/stm32/uart.c

@@ -158,17 +158,17 @@ void uart_init0(void) {
         MICROPY_BOARD_FATAL_ERROR("HAL_RCCEx_PeriphCLKConfig");
     }
     #elif defined(STM32N6)
-    // UART clock configuration, IC9 (max 100MHz).
-    LL_RCC_SetUSARTClockSource(LL_RCC_USART1_CLKSOURCE_IC9);
-    LL_RCC_SetUSARTClockSource(LL_RCC_USART2_CLKSOURCE_IC9);
-    LL_RCC_SetUSARTClockSource(LL_RCC_USART3_CLKSOURCE_IC9);
-    LL_RCC_SetUARTClockSource(LL_RCC_UART4_CLKSOURCE_IC9);
-    LL_RCC_SetUARTClockSource(LL_RCC_UART5_CLKSOURCE_IC9);
-    LL_RCC_SetUSARTClockSource(LL_RCC_USART6_CLKSOURCE_IC9);
-    LL_RCC_SetUARTClockSource(LL_RCC_UART7_CLKSOURCE_IC9);
-    LL_RCC_SetUARTClockSource(LL_RCC_UART8_CLKSOURCE_IC9);
-    LL_RCC_SetUARTClockSource(LL_RCC_UART9_CLKSOURCE_IC9);
-    LL_RCC_SetUSARTClockSource(LL_RCC_USART10_CLKSOURCE_IC9);
+    // UART clock configuration, IC14 (max 100MHz).
+    LL_RCC_SetUSARTClockSource(LL_RCC_USART1_CLKSOURCE_IC14);
+    LL_RCC_SetUSARTClockSource(LL_RCC_USART2_CLKSOURCE_IC14);
+    LL_RCC_SetUSARTClockSource(LL_RCC_USART3_CLKSOURCE_IC14);
+    LL_RCC_SetUARTClockSource(LL_RCC_UART4_CLKSOURCE_IC14);
+    LL_RCC_SetUARTClockSource(LL_RCC_UART5_CLKSOURCE_IC14);
+    LL_RCC_SetUSARTClockSource(LL_RCC_USART6_CLKSOURCE_IC14);
+    LL_RCC_SetUARTClockSource(LL_RCC_UART7_CLKSOURCE_IC14);
+    LL_RCC_SetUARTClockSource(LL_RCC_UART8_CLKSOURCE_IC14);
+    LL_RCC_SetUARTClockSource(LL_RCC_UART9_CLKSOURCE_IC14);
+    LL_RCC_SetUSARTClockSource(LL_RCC_USART10_CLKSOURCE_IC14);
     #endif
 }