Commit c80ace50 authored by Lubos Koudelka's avatar Lubos Koudelka Committed by Carles Cufi
Browse files

soc: st: stm32: adding option to enable prefetch buffer 



For more effective code execution on STM32 devices is convenient
 to enable flash prefetch buffer.
To be enabled by default, possible to disable using kconfig.

Signed-off-by: default avatarLubos Koudelka <lubos.koudelka@st.com>
parent 46ff1dff

soc/st/stm32/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -47,6 +47,9 @@ config SWJ_ANALOG_PRIORITY 
	  This priority must be greater than GPIO_INIT_PRIORITY and lower than

	  UART_INIT_PRIORITY.



config STM32_FLASH_PREFETCH

	bool "Flash prefetch buffer"



choice POWER_SUPPLY_CHOICE

	prompt "STM32 power supply configuration"

	default POWER_SUPPLY_LDO

soc/st/stm32/stm32wbax/Kconfig.defconfig

+3 −0
Original line number Diff line number Diff line
@@ -10,6 +10,9 @@ rsource "Kconfig.defconfig.stm32wba*" 
config STM32_LPTIM_TIMER

	default y if PM



config STM32_FLASH_PREFETCH

	default y



choice BT_HCI_BUS_TYPE

	default BT_STM32WBA

	depends on BT

soc/st/stm32/stm32wbax/soc.c

+3 −0
Original line number Diff line number Diff line
@@ -37,6 +37,9 @@ int stm32wba_init(void) 
	/* Enable instruction cache in 1-way (direct mapped cache) */

	LL_ICACHE_SetMode(LL_ICACHE_1WAY);

	LL_ICACHE_Enable();

#ifdef CONFIG_STM32_FLASH_PREFETCH

	__HAL_FLASH_PREFETCH_BUFFER_ENABLE();

#endif



	/* Update CMSIS SystemCoreClock variable (HCLK) */

	/* At reset, system core clock is set to 16 MHz from HSI */

CRA Git | Maintained and supported by SUSTech CRA and CCSE