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aspeed/scu: Introduce a aspeed_scu_get_apb_freq() routine

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The APB frequency can be calculated directly when needed from the
HPLL_PARAM and CLK_SEL register values. This removes useless state in
the model.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 20190904070506.1052-11-clg@kaod.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Cédric Le Goater 2019-09-04 09:05:06 +02:00 • committed by Peter Maydell
parent 9a937f6cc4
commit a8f07376c9
3 changed files with 14 additions and 22 deletions
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3
hw/timer/aspeed_timer.c
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@ -93,7 +93,8 @@ static inline uint32_t calculate_rate(struct AspeedTimer *t)
{
AspeedTimerCtrlState *s = timer_to_ctrl(t);
return timer_external_clock(t) ? TIMER_CLOCK_EXT_HZ : s->scu->apb_freq;
return timer_external_clock(t) ? TIMER_CLOCK_EXT_HZ :
aspeed_scu_get_apb_freq(s->scu);
}
static inline uint32_t calculate_ticks(struct AspeedTimer *t, uint64_t now_ns)