diff --git a/arch/arm/cpu/arm1136/mx31/timer.c b/arch/arm/cpu/arm1136/mx31/timer.c
index 7972ba0dd7481f88a45fe0b0961a413d13fa62ee..b8848c48b477cc2e2ba07f427bb74fe2e75c9788 100644
--- a/arch/arm/cpu/arm1136/mx31/timer.c
+++ b/arch/arm/cpu/arm1136/mx31/timer.c
@@ -151,7 +151,7 @@ void set_timer (ulong t)
 	timestamp = time_to_tick(t);
 }
 
-/* delay x useconds AND perserve advance timstamp value */
+/* delay x useconds AND preserve advance timestamp value */
 void __udelay (unsigned long usec)
 {
 	unsigned long long tmp;
diff --git a/arch/arm/cpu/arm1136/omap24xx/timer.c b/arch/arm/cpu/arm1136/omap24xx/timer.c
index 67547490fdaaad0e5e7f4420471aed4af174af94..68fe1b22066a6f42782fff15e1152b5165bb3fff 100644
--- a/arch/arm/cpu/arm1136/omap24xx/timer.c
+++ b/arch/arm/cpu/arm1136/omap24xx/timer.c
@@ -73,25 +73,25 @@ void set_timer (ulong t)
 	timestamp = t;
 }
 
-/* delay x useconds AND perserve advance timstamp value */
+/* delay x useconds AND preserve advance timestamp value */
 void __udelay (unsigned long usec)
 {
 	ulong tmo, tmp;
 
-	if (usec >= 1000) {			/* if "big" number, spread normalization to seconds */
-		tmo = usec / 1000;		/* start to normalize for usec to ticks per sec */
-		tmo *= CONFIG_SYS_HZ;			/* find number of "ticks" to wait to achieve target */
-		tmo /= 1000;			/* finish normalize. */
-	} else {					/* else small number, don't kill it prior to HZ multiply */
+	if (usec >= 1000) {		/* if "big" number, spread normalization to seconds */
+		tmo = usec / 1000;	/* start to normalize for usec to ticks per sec */
+		tmo *= CONFIG_SYS_HZ;	/* find number of "ticks" to wait to achieve target */
+		tmo /= 1000;		/* finish normalize. */
+	} else {			/* else small number, don't kill it prior to HZ multiply */
 		tmo = usec * CONFIG_SYS_HZ;
 		tmo /= (1000*1000);
 	}
 
 	tmp = get_timer (0);		/* get current timestamp */
-	if ( (tmo + tmp + 1) < tmp )/* if setting this forward will roll time stamp */
+	if ( (tmo + tmp + 1) < tmp )	/* if setting this forward will roll time stamp */
 		reset_timer_masked ();	/* reset "advancing" timestamp to 0, set lastinc value */
 	else
-		tmo	+= tmp;				/* else, set advancing stamp wake up time */
+		tmo	+= tmp;		/* else, set advancing stamp wake up time */
 	while (get_timer_masked () < tmo)/* loop till event */
 		/*NOP*/;
 }
@@ -100,16 +100,16 @@ void reset_timer_masked (void)
 {
 	/* reset time */
 	lastinc = READ_TIMER;		/* capture current incrementer value time */
-	timestamp = 0;				/* start "advancing" time stamp from 0 */
+	timestamp = 0;			/* start "advancing" time stamp from 0 */
 }
 
 ulong get_timer_masked (void)
 {
 	ulong now = READ_TIMER;		/* current tick value */
 
-	if (now >= lastinc)			/* normal mode (non roll) */
+	if (now >= lastinc)		/* normal mode (non roll) */
 		timestamp += (now - lastinc); /* move stamp fordward with absoulte diff ticks */
-	else						/* we have rollover of incrementer */
+	else				/* we have rollover of incrementer */
 		timestamp += (0xFFFFFFFF - lastinc) + now;
 	lastinc = now;
 	return timestamp;
diff --git a/arch/arm/cpu/arm920t/a320/timer.c b/arch/arm/cpu/arm920t/a320/timer.c
index bb655930de5f951f2dbd24b16857d86ef377a86f..d69dbff0e15b29d3ec999c6c77c7cce8e5425929 100644
--- a/arch/arm/cpu/arm920t/a320/timer.c
+++ b/arch/arm/cpu/arm920t/a320/timer.c
@@ -155,7 +155,7 @@ void set_timer(ulong t)
 	timestamp = t;
 }
 
-/* delay x useconds AND perserve advance timstamp value */
+/* delay x useconds AND preserve advance timestamp value */
 void udelay(unsigned long usec)
 {
 	long tmo = usec * (TIMER_CLOCK / 1000) / 1000;
diff --git a/arch/arm/cpu/arm926ejs/omap/timer.c b/arch/arm/cpu/arm926ejs/omap/timer.c
index 2ac38c40b774e9f22a5b69c823873a9439cd4603..7d4b6e602e4e99b7ceca0d00e6ca504c5f50a957 100644
--- a/arch/arm/cpu/arm926ejs/omap/timer.c
+++ b/arch/arm/cpu/arm926ejs/omap/timer.c
@@ -79,14 +79,14 @@ void set_timer (ulong t)
 	timestamp = t;
 }
 
-/* delay x useconds AND perserve advance timstamp value */
+/* delay x useconds AND preserve advance timestamp value */
 void __udelay (unsigned long usec)
 {
 	ulong tmo, tmp;
 
 	if(usec >= 1000){		/* if "big" number, spread normalization to seconds */
 		tmo = usec / 1000;	/* start to normalize for usec to ticks per sec */
-		tmo *= CONFIG_SYS_HZ;		/* find number of "ticks" to wait to achieve target */
+		tmo *= CONFIG_SYS_HZ;	/* find number of "ticks" to wait to achieve target */
 		tmo /= 1000;		/* finish normalize. */
 	}else{				/* else small number, don't kill it prior to HZ multiply */
 		tmo = usec * CONFIG_SYS_HZ;
diff --git a/arch/arm/cpu/arm926ejs/versatile/timer.c b/arch/arm/cpu/arm926ejs/versatile/timer.c
index 563db3654867c6fdd7d71873b83063e6addffa52..81d67490db87cadb9bba2d7bd63d9bcb91048ea7 100644
--- a/arch/arm/cpu/arm926ejs/versatile/timer.c
+++ b/arch/arm/cpu/arm926ejs/versatile/timer.c
@@ -108,14 +108,14 @@ void set_timer (ulong t)
 	timestamp = t;
 }
 
-/* delay x useconds AND perserve advance timstamp value */
+/* delay x useconds AND preserve advance timestamp value */
 void __udelay (unsigned long usec)
 {
 	ulong tmo, tmp;
 
 	if(usec >= 1000){		/* if "big" number, spread normalization to seconds */
 		tmo = usec / 1000;	/* start to normalize for usec to ticks per sec */
-		tmo *= CONFIG_SYS_HZ;		/* find number of "ticks" to wait to achieve target */
+		tmo *= CONFIG_SYS_HZ;	/* find number of "ticks" to wait to achieve target */
 		tmo /= 1000;		/* finish normalize. */
 	}else{				/* else small number, don't kill it prior to HZ multiply */
 		tmo = usec * CONFIG_SYS_HZ;
diff --git a/arch/arm/cpu/arm_cortexa8/mx51/timer.c b/arch/arm/cpu/arm_cortexa8/mx51/timer.c
index 8ecfec66dadd848ae6da0f1d7e7ffada4b0c7e30..81c4a06143554d5f963d0de08f987e5149fd2070 100644
--- a/arch/arm/cpu/arm_cortexa8/mx51/timer.c
+++ b/arch/arm/cpu/arm_cortexa8/mx51/timer.c
@@ -102,7 +102,7 @@ void set_timer(ulong t)
 	timestamp = t;
 }
 
-/* delay x useconds AND perserve advance timstamp value */
+/* delay x useconds AND preserve advance timestamp value */
 void __udelay(unsigned long usec)
 {
 	unsigned long now, start, tmo;