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Add Power Management support to RTC counter driver for TI cc23x0 SoC #91611

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Merged
merged 1 commit into from
Oct 22, 2025
Merged

Add Power Management support to RTC counter driver for TI cc23x0 SoC #91611

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51 changes: 35 additions & 16 deletions drivers/counter/counter_cc23x0_rtc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
#include <zephyr/kernel.h>
#include <zephyr/drivers/clock_control.h>
#include <zephyr/logging/log.h>
#include <zephyr/pm/device.h>

#include <inc/hw_rtc.h>
#include <inc/hw_types.h>
Expand Down Expand Up @@ -153,6 +154,23 @@ static uint32_t counter_cc23x0_get_pending_int(const struct device *dev)
return -ESRCH;
}

#ifdef CONFIG_PM_DEVICE

static int rtc_cc23x0_pm_action(const struct device *dev, enum pm_device_action action)
{
switch (action) {
case PM_DEVICE_ACTION_SUSPEND:
return 0;
case PM_DEVICE_ACTION_RESUME:
counter_cc23x0_get_pending_int(dev);
return 0;
default:
return -ENOTSUP;
}
}
Comment on lines +159 to +170
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I could use a little more detail on how this is adding PM support?

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RTC is part of AON domain , so it kept active during sleep and is used for wakeup from sleep. Once recover from sleep is pulling missed interrupt while reconfigured to normal.


#endif /* CONFIG_PM_DEVICE */

static uint32_t counter_cc23x0_get_top_value(const struct device *dev)
{
ARG_UNUSED(dev);
Expand Down Expand Up @@ -221,21 +239,22 @@ static DEVICE_API(counter, rtc_cc23x0_api) = {
.get_freq = counter_cc23x0_get_freq,
};

#define CC23X0_INIT(inst) \
static const struct counter_cc23x0_config cc23x0_config_##inst = { \
.counter_info = \
{ \
.max_top_value = UINT32_MAX, \
.flags = COUNTER_CONFIG_INFO_COUNT_UP, \
.channels = 1, \
}, \
.base = DT_INST_REG_ADDR(inst), \
}; \
\
static struct counter_cc23x0_data cc23x0_data_##inst; \
\
DEVICE_DT_INST_DEFINE(0, &counter_cc23x0_init, NULL, &cc23x0_data_##inst, \
&cc23x0_config_##inst, POST_KERNEL, CONFIG_COUNTER_INIT_PRIORITY, \
&rtc_cc23x0_api);
#define CC23X0_INIT(inst) \
PM_DEVICE_DT_INST_DEFINE(inst, rtc_cc23x0_pm_action); \
\
static const struct counter_cc23x0_config cc23x0_config_##inst = { \
.counter_info = { \
.max_top_value = UINT32_MAX, \
.flags = COUNTER_CONFIG_INFO_COUNT_UP, \
.channels = 1, \
}, \
.base = DT_INST_REG_ADDR(inst), \
}; \
\
static struct counter_cc23x0_data cc23x0_data_##inst; \
\
DEVICE_DT_INST_DEFINE(0, &counter_cc23x0_init, PM_DEVICE_DT_INST_GET(inst), \
&cc23x0_data_##inst, &cc23x0_config_##inst, POST_KERNEL, \
CONFIG_COUNTER_INIT_PRIORITY, &rtc_cc23x0_api);

DT_INST_FOREACH_STATUS_OKAY(CC23X0_INIT)