From 361fde35cf37e5c8171ab470449e85ad44da4e52 Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Wed, 18 Oct 2023 03:16:15 +0200
Subject: [PATCH] stm32/rcc: wait for mux switch.

---
 embassy-stm32/src/rcc/l4l5.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/embassy-stm32/src/rcc/l4l5.rs b/embassy-stm32/src/rcc/l4l5.rs
index a10169d6..683b47c0 100644
--- a/embassy-stm32/src/rcc/l4l5.rs
+++ b/embassy-stm32/src/rcc/l4l5.rs
@@ -241,6 +241,7 @@ pub(crate) unsafe fn init(config: Config) {
         w.set_ppre1(config.apb1_pre);
         w.set_ppre2(config.apb2_pre);
     });
+    while RCC.cfgr().read().sws() != config.mux {}
 
     let ahb_freq = sys_clk / config.ahb_pre;