Index: firmware/target/arm/system-target.h
===================================================================
--- firmware/target/arm/system-target.h	(revision 20076)
+++ firmware/target/arm/system-target.h	(working copy)
@@ -31,14 +31,14 @@
 #if CONFIG_CPU == PP5002
 #define CPUFREQ_SLEEP      32768
 #define CPUFREQ_DEFAULT 24000000
-#define CPUFREQ_NORMAL  30000000
+#define CPUFREQ_NORMAL  24000000
 #define CPUFREQ_MAX     80000000
 
 #else /* PP5022, PP5024 */
 #define CPUFREQ_SLEEP      32768
 #define CPUFREQ_DEFAULT 24000000
-#define CPUFREQ_NORMAL  30000000
-#define CPUFREQ_MAX     80000000
+#define CPUFREQ_NORMAL  24000000
+#define CPUFREQ_MAX    100000000
 #endif
 
 #define inl(a) (*(volatile unsigned long *) (a))
Index: firmware/target/arm/ipod/button-target.h
===================================================================
--- firmware/target/arm/ipod/button-target.h	(revision 20076)
+++ firmware/target/arm/ipod/button-target.h	(working copy)
@@ -43,12 +43,13 @@
 #define BUTTON_RIGHT        0x00000008
 #define BUTTON_SCROLL_FWD   0x00000010
 #define BUTTON_SCROLL_BACK  0x00000020
+#define BUTTON_SCROLL       0x00000040
 
-#define BUTTON_PLAY         0x00000040
+#define BUTTON_PLAY         0x00000080
 
 #define BUTTON_MAIN (BUTTON_SELECT|BUTTON_MENU\
                 |BUTTON_LEFT|BUTTON_RIGHT|BUTTON_SCROLL_FWD\
-                |BUTTON_SCROLL_BACK|BUTTON_PLAY)
+                |BUTTON_SCROLL_BACK|BUTTON_SCROLL|BUTTON_PLAY)
 
     /* Remote control's buttons */
 #ifdef IPOD_ACCESSORY_PROTOCOL
Index: firmware/target/arm/ipod/button-clickwheel.c
===================================================================
--- firmware/target/arm/ipod/button-clickwheel.c	(revision 20076)
+++ firmware/target/arm/ipod/button-clickwheel.c	(working copy)
@@ -175,7 +175,7 @@
                         v = (v<0) ? -v : v;                       /* undo signedness */
             
                         /* some velocity filtering to smooth things out */
-                        wheel_velocity = (31 * wheel_velocity + v) / 32;
+                        wheel_velocity = (15 * wheel_velocity + v) / 16;
                         /* limit to 24 bit */
                         wheel_velocity = (wheel_velocity>0xffffff) ? 0xffffff : wheel_velocity;
 
@@ -225,6 +225,9 @@
                         }
                         last_wheel_usec = usec;
                         old_wheel_value = new_wheel_value;
+                        
+                        /* be able to read wheel action via button_read_device() */  
+                        btn |= BUTTON_SCROLL;
                     }
                 }
                 else
Index: firmware/target/arm/sandisk/sansa-e200/button-e200.c
===================================================================
--- firmware/target/arm/sandisk/sansa-e200/button-e200.c	(revision 20076)
+++ firmware/target/arm/sandisk/sansa-e200/button-e200.c	(working copy)
@@ -226,6 +226,9 @@
             }
 
             last_wheel_usec = usec;
+            
+            /* be able to read wheel action via button_read_device() */
+            int_btn |= BUTTON_SCROLL;
         }
     }
 
Index: firmware/target/arm/sandisk/sansa-e200/button-target.h
===================================================================
--- firmware/target/arm/sandisk/sansa-e200/button-target.h	(revision 20076)
+++ firmware/target/arm/sandisk/sansa-e200/button-target.h	(working copy)
@@ -48,6 +48,7 @@
 
 #define BUTTON_SCROLL_BACK  0x00000080
 #define BUTTON_SCROLL_FWD   0x00000100
+#define BUTTON_SCROLL       0x00000200
 
 #define BUTTON_MAIN         0x00000fff
 
Index: firmware/target/arm/system-pp502x.c
===================================================================
--- firmware/target/arm/system-pp502x.c	(revision 20076)
+++ firmware/target/arm/system-pp502x.c	(working copy)
@@ -281,15 +281,19 @@
         PLL_CONTROL   = 0x8a020a03; /* repeat setup */
         udelay(500);                /* wait for relock */
 #elif (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024)
-        PLL_CONTROL   = 0x8a121403; /*  80 MHz = (20/3 * 24MHz) / 2 */
+        //PLL_CONTROL   = 0x8a121403; /*  80 MHz = (20/3 * 24MHz) / 2 */
+        //PLL_CONTROL   = 0x8a121e04; /*  90 MHz = (30/4 * 24MHz) / 2 */
+        PLL_CONTROL   = 0x8a021906; /*  100 MHz = (25/6 * 24MHz) / 1 */
         while (!(PLL_STATUS & 0x80000000)); /* wait for relock */
 #endif
         scale_suspend_core(true);
-        DEV_TIMING1   = 0x00000808;
+        //DEV_TIMING1   = 0x00000808;
+        //DEV_TIMING1   = 0x00000909;
+        DEV_TIMING1   = 0x00000a0a;
         CLOCK_SOURCE  = 0x20007777; /* source #1, #2, #3, #4: PLL (#2 active) */
         scale_suspend_core(false);
         break;
-#if 0 /******** CPUFREQ_NORMAL = 24MHz without PLL ********/
+#if 1 /******** CPUFREQ_NORMAL = 24MHz without PLL ********/
       case CPUFREQ_NORMAL:
         cpu_frequency =  CPUFREQ_NORMAL;
         PLL_CONTROL  |=  0x08000000;
@@ -324,6 +328,7 @@
         udelay(500);                /* wait for relock */
 #elif (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024)
         PLL_CONTROL   = 0x8a220501; /* 30 MHz = (5/1 * 24MHz) / 4 */
+        //PLL_CONTROL   = 0x8a320501; /* 15 MHz = (5/1 * 24MHz) / 8 */
         while (!(PLL_STATUS & 0x80000000)); /* wait for relock */
 #endif
         scale_suspend_core(true);
Index: firmware/drivers/button.c
===================================================================
--- firmware/drivers/button.c	(revision 20076)
+++ firmware/drivers/button.c	(working copy)
@@ -95,6 +95,24 @@
 }
 #endif
 
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+static void gui_boost(bool state)
+{
+    static bool boosted = false;
+    
+    if (state && !boosted)
+    {
+        cpu_boost(true);
+        boosted = true;
+    }
+    else if (!state && boosted)
+    {
+        cpu_boost(false);
+        boosted = false;
+    }
+}
+#endif /* HAVE_ADJUSTABLE_CPU_FREQ */
+
 static void button_tick(void)
 {
     static int count = 0;
@@ -108,6 +126,10 @@
     static bool skip_remote_release = false;
 #endif
 #endif
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    static unsigned long last_button_usec;
+    unsigned long usec = USEC_TIMER;
+#endif
     int diff;
     int btn;
 #ifdef HAVE_BUTTON_DATA
@@ -141,6 +163,19 @@
     }
 #endif
 
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    /* Boost gui on button activity, unboost gui after timeout. */
+    if (BUTTON_NONE != btn)
+    {
+        last_button_usec = usec;
+        gui_boost(true);
+    }
+    else if (TIME_AFTER(usec, last_button_usec + 1000000))
+    {
+        gui_boost(false);
+    }
+#endif
+
     /* Find out if a key has been released */
     diff = btn ^ lastbtn;
     if(diff && (btn & diff) == 0)