diff options
| -rw-r--r-- | cpu/arm920t/s3c24x0/timer.c | 36 | ||||
| -rw-r--r-- | include/configs/sbc2410x.h | 4 | ||||
| -rw-r--r-- | include/configs/smdk2400.h | 4 | ||||
| -rw-r--r-- | include/configs/smdk2410.h | 4 | ||||
| -rw-r--r-- | include/configs/trab.h | 12 |
5 files changed, 24 insertions, 36 deletions
diff --git a/cpu/arm920t/s3c24x0/timer.c b/cpu/arm920t/s3c24x0/timer.c index c8c7cdb..db472bf 100644 --- a/cpu/arm920t/s3c24x0/timer.c +++ b/cpu/arm920t/s3c24x0/timer.c @@ -39,6 +39,7 @@ #endif int timer_load_val = 0; +static ulong timer_clk; /* macro to read the 16 bit timer */ static inline ulong READ_TIMER(void) @@ -66,6 +67,7 @@ int timer_init (void) * @33.25MHz and 15625 @ 50 MHz */ timer_load_val = get_PCLK()/(2 * 16 * 100); + timer_clk = get_PCLK() / (2 * 16); } /* load value for 10 ms timeout */ lastdec = timers->TCNTB4 = timer_load_val; @@ -100,13 +102,13 @@ void set_timer (ulong t) void udelay (unsigned long usec) { ulong tmo; - ulong start = get_timer(0); + ulong start = get_ticks(); tmo = usec / 1000; tmo *= (timer_load_val * 100); tmo /= 1000; - while ((ulong)(get_timer_masked () - start) < tmo) + while ((ulong) (get_ticks() - start) < tmo) /*NOP*/; } @@ -119,18 +121,9 @@ void reset_timer_masked (void) ulong get_timer_masked (void) { - ulong now = READ_TIMER(); - - if (lastdec >= now) { - /* normal mode */ - timestamp += lastdec - now; - } else { - /* we have an overflow ... */ - timestamp += lastdec + timer_load_val - now; - } - lastdec = now; + ulong tmr = get_ticks(); - return timestamp; + return tmr / (timer_clk / CONFIG_SYS_HZ); } void udelay_masked (unsigned long usec) @@ -148,10 +141,10 @@ void udelay_masked (unsigned long usec) tmo /= (1000*1000); } - endtime = get_timer_masked () + tmo; + endtime = get_ticks() + tmo; do { - ulong now = get_timer_masked (); + ulong now = get_ticks(); diff = endtime - now; } while (diff >= 0); } @@ -162,7 +155,18 @@ void udelay_masked (unsigned long usec) */ unsigned long long get_ticks(void) { - return get_timer(0); + ulong now = READ_TIMER(); + + if (lastdec >= now) { + /* normal mode */ + timestamp += lastdec - now; + } else { + /* we have an overflow ... */ + timestamp += lastdec + timer_load_val - now; + } + lastdec = now; + + return timestamp; } /* diff --git a/include/configs/sbc2410x.h b/include/configs/sbc2410x.h index f2ea926..e6886cf 100644 --- a/include/configs/sbc2410x.h +++ b/include/configs/sbc2410x.h @@ -139,9 +139,7 @@ #define CONFIG_SYS_LOAD_ADDR 0x33000000 /* default load address */ -/* the PWM TImer 4 uses a counter of 15625 for 10 ms, so we need */ -/* it to wrap 100 times (total 1562500) to get 1 sec. */ -#define CONFIG_SYS_HZ 1562500 +#define CONFIG_SYS_HZ 1000 /* valid baudrates */ #define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 } diff --git a/include/configs/smdk2400.h b/include/configs/smdk2400.h index c234177..a1beb65 100644 --- a/include/configs/smdk2400.h +++ b/include/configs/smdk2400.h @@ -141,9 +141,7 @@ #define CONFIG_SYS_LOAD_ADDR 0x0cf00000 /* default load address */ -/* the PWM TImer 4 uses a counter of 15625 for 10 ms, so we need */ -/* it to wrap 100 times (total 1562500) to get 1 sec. */ -#define CONFIG_SYS_HZ 1562500 +#define CONFIG_SYS_HZ 1000 /* valid baudrates */ #define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 } diff --git a/include/configs/smdk2410.h b/include/configs/smdk2410.h index d340098..c57751b 100644 --- a/include/configs/smdk2410.h +++ b/include/configs/smdk2410.h @@ -124,9 +124,7 @@ #define CONFIG_SYS_LOAD_ADDR 0x33000000 /* default load address */ -/* the PWM TImer 4 uses a counter of 15625 for 10 ms, so we need */ -/* it to wrap 100 times (total 1562500) to get 1 sec. */ -#define CONFIG_SYS_HZ 1562500 +#define CONFIG_SYS_HZ 1000 /* valid baudrates */ #define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 } diff --git a/include/configs/trab.h b/include/configs/trab.h index 43c191b..97f30ce 100644 --- a/include/configs/trab.h +++ b/include/configs/trab.h @@ -320,17 +320,7 @@ #define CONFIG_SYS_LOAD_ADDR 0x0CF00000 /* default load address */ -#ifdef CONFIG_TRAB_50MHZ -/* the PWM TImer 4 uses a counter of 15625 for 10 ms, so we need */ -/* it to wrap 100 times (total 1562500) to get 1 sec. */ -/* this should _really_ be calculated !! */ -#define CONFIG_SYS_HZ 1562500 -#else -/* the PWM TImer 4 uses a counter of 10390 for 10 ms, so we need */ -/* it to wrap 100 times (total 1039000) to get 1 sec. */ -/* this should _really_ be calculated !! */ -#define CONFIG_SYS_HZ 1039000 -#endif +#define CONFIG_SYS_HZ 1000 /* valid baudrates */ #define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 } |