From 2826fd320cf364077ccc64e645af468adcbe567e Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Fri, 22 Nov 2013 15:29:38 +0100 Subject: zynq: timer: Fix hangs if network activity attempted after about one hour Cortex-A9 MPCore TRM' from ARM (ARM DDI 0407G ID072711) describes in the section 4.1.1 how this value calculation should be done. This patch fixes the problem if network activity such as ping or tftp is attempted after u-boot has been idle for an hour, it hangs, and cannot control-C out of it. Signed-off-by: Uday Hegde Signed-off-by: Michal Simek diff --git a/arch/arm/cpu/armv7/zynq/timer.c b/arch/arm/cpu/armv7/zynq/timer.c index 78e30a6..174e5a1 100644 --- a/arch/arm/cpu/armv7/zynq/timer.c +++ b/arch/arm/cpu/armv7/zynq/timer.c @@ -56,7 +56,7 @@ int timer_init(void) (TIMER_PRESCALE << SCUTIMER_CONTROL_PRESCALER_SHIFT) | SCUTIMER_CONTROL_ENABLE_MASK; - gd->arch.timer_rate_hz = (gd->cpu_clk / 2) / TIMER_PRESCALE; + gd->arch.timer_rate_hz = (gd->cpu_clk / 2) / (TIMER_PRESCALE + 1); /* Load the timer counter register */ writel(0xFFFFFFFF, &timer_base->load); @@ -93,7 +93,7 @@ ulong get_timer_masked(void) gd->arch.tbl += gd->arch.lastinc - now; } else { /* We have an overflow ... */ - gd->arch.tbl += gd->arch.lastinc + TIMER_LOAD_VAL - now; + gd->arch.tbl += gd->arch.lastinc + TIMER_LOAD_VAL - now + 1; } gd->arch.lastinc = now; -- cgit v0.10.2