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drivers: timer: stm32 lptimer clock prescaler property

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Rename to LPTIM_PRESCALER, the <st,property> prescaler of
the stm32 LPTimer. This commit gives better readability than
LPTIM_CLOCK_RATIO.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2023-10-17 09:10:55 +02:00 • committed by Fabio Baltieri
commit a19eb7cf88
1 changed files with 3 additions and 3 deletions
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6
drivers/timer/stm32_lptim_timer.c
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@ -65,7 +65,7 @@ static uint32_t lptim_clock_freq = KHZ(32);
static int32_t lptim_time_base;
/* The prescaler given by the DTS and to apply to the lptim_clock_freq */
#define LPTIM_CLOCK_RATIO DT_PROP(DT_DRV_INST(0), st_prescaler)
#define LPTIM_PRESCALER DT_PROP(DT_DRV_INST(0), st_prescaler)
/* Minimum nb of clock cycles to have to set autoreload register correctly */
#define LPTIM_GUARD_VALUE 2
@ -388,7 +388,7 @@ static int sys_clock_driver_init(void)
}
/* Actual lptim clock freq when the clock source is reduced by the prescaler */
lptim_clock_freq = lptim_clock_freq / LPTIM_CLOCK_RATIO;
lptim_clock_freq = lptim_clock_freq / LPTIM_PRESCALER;
/* Clear the event flag and possible pending interrupt */
IRQ_CONNECT(DT_INST_IRQN(0),
@ -404,7 +404,7 @@ static int sys_clock_driver_init(void)
/* configure the LPTIM counter */
LL_LPTIM_SetClockSource(LPTIM, LL_LPTIM_CLK_SOURCE_INTERNAL);
/* the LPTIM clock freq is affected by the prescaler */
LL_LPTIM_SetPrescaler(LPTIM, (__CLZ(__RBIT(LPTIM_CLOCK_RATIO)) << LPTIM_CFGR_PRESC_Pos));
LL_LPTIM_SetPrescaler(LPTIM, (__CLZ(__RBIT(LPTIM_PRESCALER)) << LPTIM_CFGR_PRESC_Pos));
#if defined(CONFIG_SOC_SERIES_STM32U5X) || \
defined(CONFIG_SOC_SERIES_STM32WBAX)
LL_LPTIM_OC_SetPolarity(LPTIM, LL_LPTIM_CHANNEL_CH1,