diff options
| author | Rob Herring <rob.herring@calxeda.com> | 2013-06-12 22:24:49 -0500 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-07-25 08:15:33 +0200 |
| commit | 714d1f5da53101ec44ab9c3d10564462b102bd8f (patch) | |
| tree | a4be03f06301058de1f645e762d97e92a70c2aa2 /arch/arm/cpu/armv7 | |
| parent | ec0e413f934fd70968b4ca0daa530cbe8f5cdb4f (diff) | |
| download | u-boot-imx-714d1f5da53101ec44ab9c3d10564462b102bd8f.zip u-boot-imx-714d1f5da53101ec44ab9c3d10564462b102bd8f.tar.gz u-boot-imx-714d1f5da53101ec44ab9c3d10564462b102bd8f.tar.bz2 | |
ARM: highbank: set timer prescaler to 256
The 150MHz clock rate gives u-boot time functions problems and there's no
benefit to a fast clock, so lower the rate.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'arch/arm/cpu/armv7')
| -rw-r--r-- | arch/arm/cpu/armv7/highbank/timer.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/highbank/timer.c b/arch/arm/cpu/armv7/highbank/timer.c index da33d3c..d93de1e 100644 --- a/arch/arm/cpu/armv7/highbank/timer.c +++ b/arch/arm/cpu/armv7/highbank/timer.c @@ -26,7 +26,7 @@ #undef SYSTIMER_BASE #define SYSTIMER_BASE 0xFFF34000 /* Timer 0 and 1 base */ -#define SYSTIMER_RATE 150000000 +#define SYSTIMER_RATE (150000000 / 256) static ulong timestamp; static ulong lastinc; @@ -40,9 +40,11 @@ int timer_init(void) /* * Setup timer0 */ + writel(0, &systimer_base->timer0control); writel(SYSTIMER_RELOAD, &systimer_base->timer0load); writel(SYSTIMER_RELOAD, &systimer_base->timer0value); - writel(SYSTIMER_EN | SYSTIMER_32BIT, &systimer_base->timer0control); + writel(SYSTIMER_EN | SYSTIMER_32BIT | SYSTIMER_PRESC_256, + &systimer_base->timer0control); reset_timer_masked(); |