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don't save and reset XSPI clock source; let mux config handle it

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This commit is contained in:
Rogan Morrow 2025-08-29 17:51:52 +10:00
parent 13fc222ef4
commit 5fb4bbfc3e
1 changed files with 2 additions and 12 deletions
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14
embassy-stm32/src/rcc/h.rs
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@ -431,13 +431,10 @@ pub(crate) unsafe fn init(config: Config) {
while !RCC.cr().read().hsirdy() {}
#[cfg(stm32h7rs)]
let (xspi1sel, xspi2sel) = {
// Save XSPI clock source settings and switch the clock source so it will use HSI
let xspi1sel = RCC.ahbperckselr().read().xspi1sel();
let xspi2sel = RCC.ahbperckselr().read().xspi2sel();
{
// Switch the XSPI clock source so it will use HSI
RCC.ahbperckselr().modify(|w| w.set_xspi1sel(Xspisel::HCLK5));
RCC.ahbperckselr().modify(|w| w.set_xspi2sel(Xspisel::HCLK5));
(xspi1sel, xspi2sel)
};
// Use the HSI clock as system clock during the actual clock setup
@ -688,13 +685,6 @@ pub(crate) unsafe fn init(config: Config) {
config.mux.init();
#[cfg(stm32h7rs)]
{
// Set the XSPI clock source back to what it was originally
RCC.ahbperckselr().modify(|w| w.set_xspi1sel(xspi1sel));
RCC.ahbperckselr().modify(|w| w.set_xspi2sel(xspi2sel));
}
set_clocks!(
sys: Some(sys),
hclk1: Some(hclk),