From d330615b90d4997909806f8c22be6a3a2c3449b9 Mon Sep 17 00:00:00 2001 From: Hans Ulli Kroll Date: Tue, 11 Aug 2015 22:09:05 +0200 Subject: ARM: gemini: Setup timer3 as free running timer In the original driver it is missed to setup a free running driver. This timer is needed for the scheduler. So setup it. Signed-off-by: Hans Ulli Kroll Reviewed-by: Linus Walleij Signed-off-by: Olof Johansson --- arch/arm/mach-gemini/time.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-gemini') diff --git a/arch/arm/mach-gemini/time.c b/arch/arm/mach-gemini/time.c index 5e2b1bab4462..f5f18df5aacd 100644 --- a/arch/arm/mach-gemini/time.c +++ b/arch/arm/mach-gemini/time.c @@ -15,6 +15,7 @@ #include #include #include +#include /* * Register definitions for the timers @@ -62,6 +63,11 @@ static unsigned int tick_rate; +static u64 notrace gemini_read_sched_clock(void) +{ + return readl(TIMER_COUNT(TIMER3_BASE)); +} + static int gemini_timer_set_next_event(unsigned long cycles, struct clock_event_device *evt) { @@ -206,8 +212,21 @@ void __init gemini_timer_init(void) writel(TIMER_DEFAULT_FLAGS, TIMER_CR); /* - * Setup clockevent timer (interrupt-driven.) + * Setup free-running clocksource timer (interrupts + * disabled.) */ + writel(0, TIMER_COUNT(TIMER3_BASE)); + writel(0, TIMER_LOAD(TIMER3_BASE)); + writel(0, TIMER_MATCH1(TIMER3_BASE)); + writel(0, TIMER_MATCH2(TIMER3_BASE)); + clocksource_mmio_init(TIMER_COUNT(TIMER3_BASE), + "gemini_clocksource", tick_rate, + 300, 32, clocksource_mmio_readl_up); + sched_clock_register(gemini_read_sched_clock, 32, tick_rate); + + /* + * Setup clockevent timer (interrupt-driven.) + */ writel(0, TIMER_COUNT(TIMER1_BASE)); writel(0, TIMER_LOAD(TIMER1_BASE)); writel(0, TIMER_MATCH1(TIMER1_BASE)); -- cgit v1.2.3-59-g8ed1b