On 06:30 Mon 04 Aug , Gururaja Hebbar K R wrote:
- According to ARM Dual-Timer Module (SP804) TRM (ARM DDI0271),
-- Timer Value Register @ TIMER Base + 4 is Read-only. -- Prescale Value (Bits 3-2 of TIMER Control register) can only be one of 00,01,10. 11 is undefined.
Signed-off-by: Gururaja Hebbar gururajakr@sanyo.co.in
cpu/arm926ejs/versatile/timer.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/cpu/arm926ejs/versatile/timer.c b/cpu/arm926ejs/versatile/timer.c index 32872d2..9659b67 100644 --- a/cpu/arm926ejs/versatile/timer.c +++ b/cpu/arm926ejs/versatile/timer.c @@ -50,8 +50,7 @@ static ulong lastdec; int timer_init (void) { *(volatile ulong *)(CFG_TIMERBASE + 0) = CFG_TIMER_RELOAD; /* TimerLoad */
- *(volatile ulong *)(CFG_TIMERBASE + 4) = CFG_TIMER_RELOAD; /* TimerValue */
- *(volatile ulong *)(CFG_TIMERBASE + 8) = 0x8C;
- *(volatile ulong *)(CFG_TIMERBASE + 8) = 0x80;
according to datasheet for the register TimerXControl
we are supposed to not modify the bits [31:8] and [4]
so we are suppose to read the register and modify only the others register.
Best Regards, J.