X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fstm32f1%2Fao_clock.c;h=3fcf33b81177da379087fdbd72c315b83a95162f;hb=cea7122fc1843b14a179ed9311677f69c10b38eb;hp=c203b01286f6074ff03b3637097e450c41538d65;hpb=c8a0811abf59fb55cb17d2159289621d26e887ad;p=fw%2Faltos

diff --git a/src/stm32f1/ao_clock.c b/src/stm32f1/ao_clock.c
index c203b012..3fcf33b8 100644
--- a/src/stm32f1/ao_clock.c
+++ b/src/stm32f1/ao_clock.c
@@ -123,12 +123,15 @@ ao_clock_init(void)
 	while (stm_rcc.cr & (1UL << STM_RCC_CR_PLLRDY))
 		asm("nop");
 
-	/* PLLVCO */
+	/* PLLMUL */
 	cfgr = stm_rcc.cfgr;
 	cfgr &= ~(STM_RCC_CFGR_PLLMUL_MASK << STM_RCC_CFGR_PLLMUL);
-
 	cfgr |= (AO_RCC_CFGR_PLLMUL << STM_RCC_CFGR_PLLMUL);
 
+	/* PLLXTPRE */
+	cfgr &= ~(STM_RCC_CFGR_PLLXTPRE_MASK << STM_RCC_CFGR_PLLXTPRE);
+	cfgr |= (AO_RCC_CFGR_PLLXTPRE << STM_RCC_CFGR_PLLXTPRE);
+
 	/* PLL source */
 	cfgr &= ~(1UL << STM_RCC_CFGR_PLLSRC);
 	cfgr |= STM_RCC_CFGR_PLLSRC_TARGET_CLOCK;