diff options
| author | Colin Cross <ccross@android.com> | 2011-02-21 17:04:37 -0800 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2011-02-22 14:48:27 -0800 |
| commit | 62248ae826f51ac2e3d3902c0a657043d95b731c (patch) | |
| tree | b548a9107602f615d996b75aa40141cb2c8697bc /arch/arm/mach-tegra/timer.c | |
| parent | 0cf6230af909a86f81907455eca2a5c9b8f68fe6 (diff) | |
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>
Diffstat (limited to 'arch/arm/mach-tegra/timer.c')
| -rw-r--r-- | arch/arm/mach-tegra/timer.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c index ffa6a6859746..0fcb1eb4214d 100644 --- a/arch/arm/mach-tegra/timer.c +++ b/arch/arm/mach-tegra/timer.c @@ -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 = { |