firmware/zynq7000-hal/src/clocks/pll.rs

@@ -196,7 +196,7 @@ impl PllConfig {
 
 /// This function configures the ARM PLL based on the provided [PllConfig].
 pub fn configure_arm_pll(boot_mode: BootMode, pll_config: PllConfig) {
-    if ARM_PLL_INIT.swap(true, core::sync::atomic::Ordering::SeqCst) {
+    if ARM_PLL_INIT.swap(true, core::sync::atomic::Ordering::Relaxed) {
         return;
     }
     // Safety: This will only run at most once because of the atomic boolean check.
@@ -205,7 +205,7 @@ pub fn configure_arm_pll(boot_mode: BootMode, pll_config: PllConfig) {
 
 /// This function configures the IO PLL based on the provided [PllConfig].
 pub fn configure_io_pll(boot_mode: BootMode, pll_config: PllConfig) {
-    if IO_PLL_INIT.swap(true, core::sync::atomic::Ordering::SeqCst) {
+    if IO_PLL_INIT.swap(true, core::sync::atomic::Ordering::Relaxed) {
         return;
     }
     // Safety: This will only run at most once because of the atomic boolean check.
@@ -214,7 +214,7 @@ pub fn configure_io_pll(boot_mode: BootMode, pll_config: PllConfig) {
 
 /// This function configures the DDR PLL based on the provided [PllConfig].
 pub fn configure_ddr_pll(boot_mode: BootMode, pll_config: PllConfig) {
-    if DDR_PLL_INIT.swap(true, core::sync::atomic::Ordering::SeqCst) {
+    if DDR_PLL_INIT.swap(true, core::sync::atomic::Ordering::Relaxed) {
         return;
     }
     // Safety: This will only run at most once because of the atomic boolean check.

firmware/zynq7000-hal/src/qspi/mod.rs

@@ -681,7 +681,7 @@ pub fn reset() {
                     .build(),
             );
             // Keep it in reset for some cycles.
-            for _ in 0..3 {
+            for _ in 0..10 {
                 aarch32_cpu::asm::nop();
             }
             regs.reset_ctrl().write_lqspi(ResetControlQspiSmc::DEFAULT);