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drivers: pwm: stm32: fix timer instance access

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The parameters of the associated PWM timer were not being picked up
properly, as it was assumed that parent index is the same as the child
index. This is not necessarily true if other timer nodes are active and
not being used for PWM.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
This commit is contained in:
Gerard Marull-Paretas 2020-10-20 11:52:18 +02:00 • committed by Maureen Helm
commit de8134a42e
1 changed files with 3 additions and 3 deletions
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6
drivers/pwm/pwm_stm32.c
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@ -315,8 +315,8 @@ static int pwm_stm32_init(const struct device *dev)
#define DT_INST_CLK(index, inst) \
{ \
.bus = DT_CLOCKS_CELL(DT_INST(index, st_stm32_timers), bus), \
.enr = DT_CLOCKS_CELL(DT_INST(index, st_stm32_timers), bits) \
.bus = DT_CLOCKS_CELL(DT_PARENT(DT_DRV_INST(index)), bus), \
.enr = DT_CLOCKS_CELL(DT_PARENT(DT_DRV_INST(index)), bits) \
}
#define PWM_DEVICE_INIT(index) \
@ -327,7 +327,7 @@ static int pwm_stm32_init(const struct device *dev)
\
static const struct pwm_stm32_config pwm_stm32_config_##index = { \
.timer = (TIM_TypeDef *)DT_REG_ADDR( \
DT_INST(index, st_stm32_timers)), \
DT_PARENT(DT_DRV_INST(index))), \
.prescaler = DT_INST_PROP(index, st_prescaler), \
.pclken = DT_INST_CLK(index, timer), \
.pinctrl = pwm_pins_##index, \