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-rw-r--r--ports/samd/mcu/samd21/clock_config.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/ports/samd/mcu/samd21/clock_config.c b/ports/samd/mcu/samd21/clock_config.c
index 033d0f7c1..5ce127ec8 100644
--- a/ports/samd/mcu/samd21/clock_config.c
+++ b/ports/samd/mcu/samd21/clock_config.c
@@ -111,6 +111,7 @@ void set_cpu_freq(uint32_t cpu_freq_arg) {
SysTick_Config(cpu_freq / 1000);
}
+#if !MICROPY_HW_XOSC32K || MICROPY_HW_DFLL_USB_SYNC
static void sync_dfll48_with_xosc32kulp(void) {
SYSCTRL->DFLLCTRL.reg = SYSCTRL_DFLLCTRL_ENABLE;
while (!SYSCTRL->PCLKSR.bit.DFLLRDY) {
@@ -131,6 +132,7 @@ static void sync_dfll48_with_xosc32kulp(void) {
while (!SYSCTRL->PCLKSR.bit.DFLLLCKF) {
}
}
+#endif
void check_usb_clock_recovery_mode(void) {
#if MICROPY_HW_DFLL_USB_SYNC