Only implement HSRUN changes when F_CPU > 120 MHz

teensy3/kinetis.h

@@ -5663,7 +5663,7 @@ extern "C" {
 #endif
 extern int nvic_execution_priority(void);
 
-#ifdef HAS_KINETIS_HSRUN
+#if defined(HAS_KINETIS_HSRUN) && F_CPU > 120000000
 extern int kinetis_hsrun_disable(void);
 extern int kinetis_hsrun_enable(void);
 #else

teensy3/mk20dx128.c

@@ -1223,7 +1223,7 @@ int nvic_execution_priority(void)
 }
 
 
-#ifdef HAS_KINETIS_HSRUN
+#if defined(HAS_KINETIS_HSRUN) && F_CPU > 120000000
 int kinetis_hsrun_disable(void)
 {
 	if (SMC_PMSTAT == SMC_PMSTAT_HSRUN) {
@@ -1312,5 +1312,5 @@ int kinetis_hsrun_enable(void)
 	}
 	return 0;
 }
-#endif // HAS_KINETIS_HSRUN
+#endif // HAS_KINETIS_HSRUN && F_CPU > 120000000