blob: 777877feef712a339504d5e8727f3fefd92b3b3d [file] [log] [blame]
* Copyright (C) 2010, Lars-Peter Clausen <>
* JZ4740 platform timer support
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
#include <linux/export.h>
#include <linux/io.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <asm/mach-jz4740/base.h>
#include <asm/mach-jz4740/timer.h>
void __iomem *jz4740_timer_base;
void jz4740_timer_enable_watchdog(void)
writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR);
void jz4740_timer_disable_watchdog(void)
writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_SET);
void __init jz4740_timer_init(void)
jz4740_timer_base = ioremap(JZ4740_TCU_BASE_ADDR, 0x100);
if (!jz4740_timer_base)
panic("Failed to ioremap timer registers");
/* Disable all timer clocks except for those used as system timers */
writel(0x000100fc, jz4740_timer_base + JZ_REG_TIMER_STOP_SET);
/* Timer irqs are unmasked by default, mask them */
writel(0x00ff00ff, jz4740_timer_base + JZ_REG_TIMER_MASK_SET);