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drivers: timer: Do not use CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC

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On some SoCs the frequency of the system clock is obtained at run time
as the exact configuration of the hardware is not known at compile time.
On such platforms using CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC define
directly introduces timing errors.

This commit replaces CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC by the call
to inline function sys_clock_hw_cycles_per_sec() which always returns
correct frequency of the system clock.

Signed-off-by: Piotr Zięcik <piotr.ziecik@nordicsemi.no>
This commit is contained in:
Piotr Zięcik 2019-04-23 15:08:00 +02:00 • committed by Carles Cufí
commit 0c0c0d93ea
7 changed files with 9 additions and 8 deletions
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2
drivers/timer/arcv2_timer0.c
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@ -25,7 +25,7 @@
#define MIN_DELAY 512
#define COUNTER_MAX 0xffffffff
#define TIMER_STOPPED 0x0
#define CYC_PER_TICK (CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC \
#define CYC_PER_TICK (sys_clock_hw_cycles_per_sec() \
/ CONFIG_SYS_CLOCK_TICKS_PER_SEC)
#define MAX_TICKS ((COUNTER_MAX / CYC_PER_TICK) - 1)