Remove CONFIG_ARCH_CALIBRATION. It is awkward to use and no longer necessary now that we have apps/examples/calib_udelay.

arch/xtensa/src/common/xtensa_initialize.c

@@ -60,37 +60,6 @@
 
 #include "xtensa.h"
 
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: up_calibratedelay
- *
- * Description:
- *   Delay loops are provided for short timing loops.  This function, if
- *   enabled, will just wait for 100 seconds.  Using a stopwatch, you can
- *   can then determine if the timing loops are properly calibrated.
- *
- ****************************************************************************/
-
-#if defined(CONFIG_ARCH_CALIBRATION) && defined(CONFIG_DEBUG_FEATURES)
-static void up_calibratedelay(void)
-{
-  int i;
-
-  _warn("Beginning 100s delay\n");
-  for (i = 0; i < 100; i++)
-    {
-      up_mdelay(1000);
-    }
-
-  _warn("End 100s delay\n");
-}
-#else
-# define up_calibratedelay()
-#endif
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -127,10 +96,6 @@ void up_initialize(void)
   CURRENT_REGS = NULL;
 #endif
 
-  /* Calibrate the timing loop */
-
-  up_calibratedelay();
-
   /* Add any extra memory fragments to the memory manager */
 
   xtensa_add_region();