diff --git a/include/gint/clock.h b/include/gint/clock.h
index 3236b93..7a8c4f5 100644
--- a/include/gint/clock.h
+++ b/include/gint/clock.h
@@ -157,6 +157,11 @@ void cpg_get_overclock_setting(struct cpg_overclock_setting *s);
 /* Applies the specified overclock setting. */
 void cpg_set_overclock_setting(struct cpg_overclock_setting const *s);
 
+/* Sets whether or node CPG parameters are retained when world switching, i.e.
+   mostly whether overclock setting will remain while in the OS world and when
+   leaving the add-in. */
+void cpg_set_overclock_permanent(bool permanent);
+
 //---
 //	Sleep functions
 //---
diff --git a/src/cpg/overclock.c b/src/cpg/overclock.c
index 396a5cb..bf9b416 100644
--- a/src/cpg/overclock.c
+++ b/src/cpg/overclock.c
@@ -12,6 +12,7 @@
 #include <gint/clock.h>
 #include <gint/gint.h>
 #include <gint/hardware.h>
+#include <gint/drivers.h>
 #include <gint/mpu/cpg.h>
 #include <gint/mpu/bsc.h>
 #include <gint/mpu/wdt.h>
@@ -142,6 +143,17 @@ void cpg_set_overclock_setting(struct cpg_overclock_setting const *s)
     cpu_atomic_end();
 }
 
+void cpg_set_overclock_permanent(bool permanent)
+{
+    extern gint_driver_t drv_cpg;
+    int i = &drv_cpg - gint_drivers;
+
+    if(permanent)
+        gint_driver_flags[i] |= GINT_DRV_SHARED;
+    else
+        gint_driver_flags[i] &= ~GINT_DRV_SHARED;
+}
+
 #if GINT_HW_FX
 
 static struct cpg_overclock_setting const settings_fx9860g_sh3[5] = {