From 62248ae826f51ac2e3d3902c0a657043d95b731c Mon Sep 17 00:00:00 2001 From: Colin Cross Date: Mon, 21 Feb 2011 17:04:37 -0800 Subject: [PATCH] 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 Acked-by: Olof Johansson --- arch/arm/mach-tegra/timer.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c index ffa6a68..0fcb1eb 100644 --- a/arch/arm/mach-tegra/timer.c +++ b/arch/arm/mach-tegra/timer.c @@ -18,6 +18,7 @@ */ #include +#include #include #include #include @@ -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 = { -- 2.7.4