From 2826fd320cf364077ccc64e645af468adcbe567e Mon Sep 17 00:00:00 2001
From: Michal Simek <michal.simek@xilinx.com>
Date: Fri, 22 Nov 2013 15:29:38 +0100
Subject: [PATCH] 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 <udayh@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---
arch/arm/cpu/armv7/zynq/timer.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/armv7/zynq/timer.c b/arch/arm/cpu/armv7/zynq/timer.c
index 78e30a6ddcf..174e5a18f67 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;
--
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