--- zzzz-none-000/linux-2.6.19.2/arch/mips/sgi-ip27/ip27-timer.c	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/arch/mips/sgi-ip27/ip27-timer.c	2007-01-11 07:38:19.000000000 +0000
@@ -134,6 +134,13 @@
 	irq_exit();
 }
 
+unsigned long ip27_do_gettimeoffset(void)
+{
+	unsigned long ct_cur1;
+	ct_cur1 = REMOTE_HUB_L(cputonasid(0), PI_RT_COUNT) + CYCLES_PER_JIFFY;
+	return (ct_cur1 - ct_cur[0]) * NSEC_PER_CYCLE / 1000;
+}
+
 /* Includes for ioc3_init().  */
 #include <asm/sn/types.h>
 #include <asm/sn/sn0/addrs.h>
@@ -214,6 +221,8 @@
 	.name		= "timer"
 };
 
+extern int allocate_irqno(void);
+
 void __init plat_timer_setup(struct irqaction *irq)
 {
 	int irqno  = allocate_irqno();
@@ -239,17 +248,12 @@
 	setup_irq(irqno, &rt_irqaction);
 }
 
-static unsigned int ip27_hpt_read(void)
-{
-	return REMOTE_HUB_L(cputonasid(0), PI_RT_COUNT);
-}
-
 void __init ip27_time_init(void)
 {
-	mips_hpt_read = ip27_hpt_read;
-	mips_hpt_frequency = CYCLES_PER_SEC;
 	xtime.tv_sec = get_m48t35_time();
 	xtime.tv_nsec = 0;
+
+	do_gettimeoffset = ip27_do_gettimeoffset;
 }
 
 void __init cpu_time_init(void)