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stm32l4 dfumode: enable for STM32L4+ chips

This commit is contained in:
Juha Niskanen 2021-11-10 12:47:38 +02:00 committed by Xiang Xiao
parent e3bcfe5cfa
commit 201c67acbd
2 changed files with 7 additions and 5 deletions
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10
arch/arm/src/stm32l4/stm32l4_dfumode.c
View File

@ -46,6 +46,8 @@ static inline void rcc_reset(void)
{
uint32_t regval;
/* Enable the MSI clock */
regval = getreg32(STM32L4_RCC_CR);
regval |= RCC_CR_MSION;
putreg32(regval, STM32L4_RCC_CR);
@ -63,11 +65,11 @@ static inline void rcc_reset(void)
putreg32(0x00000000, STM32L4_RCC_CFGR);
/* Reset HSION, HSEON, CSSON and PLLON bits */
/* Reset enable bits for other clocks than MSI */
regval = getreg32(STM32L4_RCC_CR);
regval &= ~(RCC_CR_HSION | RCC_CR_HSIKERON | RCC_CR_HSEON |
RCC_CR_HSIASFS | RCC_CR_CSSON | RCC_CR_PLLON | RCC_CR_PLLON |
RCC_CR_HSIASFS | RCC_CR_CSSON | RCC_CR_PLLON |
RCC_CR_PLLSAI1ON | RCC_CR_PLLSAI2ON);
putreg32(regval, STM32L4_RCC_CR);
@ -121,7 +123,7 @@ static inline void apb_reset(void)
*
****************************************************************************/
#if defined(CONFIG_STM32L4_STM32L4X6)
#if defined(CONFIG_STM32L4_STM32L4X6) || defined(CONFIG_STM32L4_STM32L4XR)
void stm32l4_dfumode(void)
{
uint32_t regval;
@ -131,7 +133,7 @@ void stm32l4_dfumode(void)
_warn("Entering DFU mode...\n");
#endif
/* disable all peripherals, interrupts and switch to HSI */
/* disable all peripherals, interrupts and switch to MSI */
rcc_reset();
apb_reset();

2
arch/arm/src/stm32l4/stm32l4_dfumode.h
View File

@ -39,7 +39,7 @@
*
****************************************************************************/
#if defined(CONFIG_STM32L4_STM32L4X6)
#if defined(CONFIG_STM32L4_STM32L4X6) || defined(CONFIG_STM32L4_STM32L4XR)
void stm32l4_dfumode(void) noreturn_function;
#endif