soc: arm: nrf: conditionally employ nRF-specific timing framework

Employ the nRF-specific timing calculations framework
(based on TIMER peripheral) only if the DWT is not present
on the SoC.

Signed-off-by: Ioannis Glaropoulos <[email protected]>

Author: ioannisg

soc/arm/nordic_nrf/CMakeLists.txt

@@ -8,5 +8,10 @@ zephyr_sources(
   )
 
 if(CONFIG_SOC_HAS_TIMING_FUNCTIONS AND NOT CONFIG_BOARD_HAS_TIMING_FUNCTIONS)
-zephyr_library_sources_ifdef(CONFIG_TIMING_FUNCTIONS timing.c)
+  if(CONFIG_TIMING_FUNCTIONS)
+    # Use nRF-specific timing calculations only if DWT is not present
+    if(NOT CONFIG_CORTEX_M_DWT)
+      zephyr_library_sources(timing.c)
+    endif()
+  endif()
 endif()