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ARM: tegra: timer: Enable timer and rtc clocks 

Enable the timer and rtc clocks to prevent them being
turned off by the bootloader clock disabling code.

Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
hifive-unleashed-5.1
Colin Cross 2011-02-21 17:04:37 -08:00
parent 0cf6230af9
commit 62248ae826
1 changed files with 14 additions and 2 deletions
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16
arch/arm/mach-tegra/timer.c
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@ -18,6 +18,7 @@
*/
#include <linux/init.h>
#include <linux/err.h>
#include <linux/sched.h>
#include <linux/time.h>
#include <linux/interrupt.h>
@ -193,9 +194,22 @@ static struct irqaction tegra_timer_irq = {
static void __init tegra_init_timer(void)
{
struct clk *clk;
unsigned long rate = clk_measure_input_freq();
int ret;
clk = clk_get_sys("timer", NULL);
BUG_ON(IS_ERR(clk));
clk_enable(clk);
/*
* rtc registers are used by read_persistent_clock, keep the rtc clock
* enabled
*/
clk = clk_get_sys("rtc-tegra", NULL);
BUG_ON(IS_ERR(clk));
clk_enable(clk);
#ifdef CONFIG_HAVE_ARM_TWD
twd_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x600);
#endif
@ -239,8 +253,6 @@ static void __init tegra_init_timer(void)
tegra_clockevent.cpumask = cpu_all_mask;
tegra_clockevent.irq = tegra_timer_irq.irq;
clockevents_register_device(&tegra_clockevent);
return;
}
struct sys_timer tegra_timer = {