timing: use runtime cycles for cortex-m systick
Use sys_clock_hw_cycles_per_sec() instead of
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC to determine clock cycles.
Signed-off-by: Michel Haber <michel-haber@hotmail.com>
diff --git a/arch/arm/core/aarch32/cortex_m/timing.c b/arch/arm/core/aarch32/cortex_m/timing.c
index 7a480c0..15a6ca3 100644
--- a/arch/arm/core/aarch32/cortex_m/timing.c
+++ b/arch/arm/core/aarch32/cortex_m/timing.c
@@ -40,7 +40,7 @@
/* SysTick and DWT both run at CPU frequency,
* reflected in the system timer HW cycles/sec.
*/
- return CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC;
+ return sys_clock_hw_cycles_per_sec();
#else
static uint64_t dwt_frequency;
uint32_t cyc_start, cyc_end;
