diff options
Diffstat (limited to 'src/stm32f4/ao_timer.c')
| -rw-r--r-- | src/stm32f4/ao_timer.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/src/stm32f4/ao_timer.c b/src/stm32f4/ao_timer.c index e378ed07..d6ef9bc3 100644 --- a/src/stm32f4/ao_timer.c +++ b/src/stm32f4/ao_timer.c @@ -181,6 +181,14 @@ ao_clock_init(void) cfgr |= (AO_RCC_CFGR_PPRE2_DIV << STM_RCC_CFGR_PPRE2); stm_rcc.cfgr = cfgr; + /* Clock configuration register DCKCFGR2; mostly make sure USB + * gets clocked from PLL_Q + */ + stm_rcc.dckcfgr2 = ((STM_RCC_DCKCFGR2_LPTIMER1SEL_APB << STM_RCC_DCKCFGR2_LPTIMER1SEL) | + (STM_RCC_DCKCFGR2_SDIOSEL_CK_48MHZ << STM_RCC_DCKCFGR2_SDIOSEL) | + (STM_RCC_DCKCFGR2_CK48MSEL_PLL_Q << STM_RCC_DCKCFGR2_CK48MSEL) | + (STM_RCC_DCKCFGR2_I2CFMP1SEL_APB << STM_RCC_DCKCFGR2_I2CFMP1SEL)); + /* Disable the PLL */ stm_rcc.cr &= ~(1 << STM_RCC_CR_PLLON); while (stm_rcc.cr & (1 << STM_RCC_CR_PLLRDY)) @@ -196,7 +204,6 @@ ao_clock_init(void) pllcfgr |= (AO_PLL_M << STM_RCC_PLLCFGR_PLLM); pllcfgr |= (AO_PLL1_N << STM_RCC_PLLCFGR_PLLN); -#if AO_PLL1_P #if AO_PLL1_P == 2 #define AO_RCC_PLLCFGR_PLLP STM_RCC_PLLCFGR_PLLP_DIV_2 #endif @@ -210,13 +217,8 @@ ao_clock_init(void) #define AO_RCC_PLLCFGR_PLLP STM_RCC_PLLCFGR_PLLP_DIV_8 #endif pllcfgr |= (AO_RCC_PLLCFGR_PLLP << STM_RCC_PLLCFGR_PLLP); -#endif -#if AO_PLL1_Q pllcfgr |= (AO_PLL1_Q << STM_RCC_PLLCFGR_PLLQ); -#endif -#if AO_PLL1_R pllcfgr |= (AO_PLL1_R << STM_RCC_PLLCFGR_PLLR); -#endif /* PLL source */ pllcfgr &= ~(1 << STM_RCC_PLLCFGR_PLLSRC); #if AO_HSI |