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Counter_nxp_mrt: Adds PM low-power recovery support

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Enables Sleep mode (PM3) in RW61x for MRT.

Signed-off-by: Tsi-Chung Liew <Tsi-Chung.Liew@nxp.com>
This commit is contained in:
Tsi-Chung Liew 2025-05-01 16:38:30 -05:00 • committed by Benjamin Cabé
commit e483b229de
1 changed files with 31 additions and 2 deletions
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33
drivers/counter/counter_nxp_mrt.c
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@ -22,6 +22,7 @@
#include <zephyr/device.h>
#include <zephyr/irq.h>
#include <zephyr/drivers/reset.h>
#include <zephyr/pm/device.h>
#include <soc.h>
@ -208,7 +209,7 @@ uint32_t nxp_mrt_get_freq(const struct device *dev)
return freq;
}
static int nxp_mrt_init(const struct device *dev)
static int nxp_mrt_init_common(const struct device *dev)
{
const struct nxp_mrt_config *config = dev->config;
MRT_Type *base = config->base;
@ -239,6 +240,32 @@ static int nxp_mrt_init(const struct device *dev)
return 0;
}
static int nxp_mrt_pm_action(const struct device *dev, enum pm_device_action action)
{
switch (action) {
case PM_DEVICE_ACTION_RESUME:
break;
case PM_DEVICE_ACTION_SUSPEND:
break;
case PM_DEVICE_ACTION_TURN_OFF:
break;
case PM_DEVICE_ACTION_TURN_ON:
nxp_mrt_init_common(dev);
break;
default:
return -ENOTSUP;
}
return 0;
}
static int nxp_mrt_init(const struct device *dev)
{
/* Rest of the init is done from the PM_DEVICE_TURN_ON action
* which is invoked by pm_device_driver_init().
*/
return pm_device_driver_init(dev, nxp_mrt_pm_action);
}
static void nxp_mrt_isr(const struct device *dev)
{
const struct nxp_mrt_config *config = dev->config;
@ -348,8 +375,10 @@ DEVICE_API(counter, nxp_mrt_api) = {
.reset = RESET_DT_SPEC_INST_GET(n), \
}; \
\
PM_DEVICE_DT_INST_DEFINE(n, nxp_mrt_pm_action); \
\
/* Init parent device in order to handle ISR and init. */ \
DEVICE_DT_INST_DEFINE(n, &nxp_mrt_init, NULL, NULL, \
DEVICE_DT_INST_DEFINE(n, &nxp_mrt_init, PM_DEVICE_DT_INST_GET(n), NULL, \
&nxp_mrt_##n##_config, \
POST_KERNEL, \
CONFIG_COUNTER_INIT_PRIORITY, NULL);