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drivers: power_domain: add driver for NXP's SCU-managed PDs

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Add driver for NXP's SCU-managed power domains.

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
This commit is contained in:
Laurentiu Mihalcea 2024-09-30 13:23:22 +03:00 • committed by Carles Cufí
commit 4fba1d4642
3 changed files with 106 additions and 0 deletions
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1
drivers/power_domain/CMakeLists.txt
View file

@ -6,3 +6,4 @@ zephyr_library()
zephyr_library_sources_ifdef(CONFIG_POWER_DOMAIN_GPIO power_domain_gpio.c)
zephyr_library_sources_ifdef(CONFIG_POWER_DOMAIN_GPIO_MONITOR power_domain_gpio_monitor.c)
zephyr_library_sources_ifdef(CONFIG_POWER_DOMAIN_INTEL_ADSP power_domain_intel_adsp.c)
zephyr_library_sources_ifdef(CONFIG_POWER_DOMAIN_NXP_SCU power_domain_nxp_scu.c)

17
drivers/power_domain/Kconfig
View file

@ -73,4 +73,21 @@ config POWER_DOMAIN_GPIO_MONITOR_INIT_PRIORITY
endif #POWER_DOMAIN_GPIO_MONITOR
config POWER_DOMAIN_NXP_SCU
bool "NXP SCU-managed PD driver"
default y
depends on DT_HAS_NXP_SCU_PD_ENABLED
help
Enable support for NXPs SCU-managed power domain driver.
if POWER_DOMAIN_NXP_SCU
config POWER_DOMAIN_NXP_SCU_INIT_PRIORITY
int "NXP SCU-managed PD driver init priority"
default 10
help
NXP SCU-managed PD driver initialization priority.
endif #POWER_DOMAIN_NXP_SCU
endif

88
drivers/power_domain/power_domain_nxp_scu.c Normal file
View file

@ -0,0 +1,88 @@
/*
* Copyright 2024 NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/pm/device_runtime.h>
#include <zephyr/pm/device.h>
#include <zephyr/logging/log.h>
#include <main/ipc.h>
#include <svc/pm/pm_api.h>
#include <zephyr/dt-bindings/power/imx_scu_rsrc.h>
LOG_MODULE_REGISTER(nxp_scu_pd);
#define DT_DRV_COMPAT nxp_scu_pd
struct scu_pd_data {
sc_ipc_t handle;
sc_rsrc_t rsrc;
};
static int scu_pd_pm_action(const struct device *dev,
enum pm_device_action action)
{
int ret;
sc_pm_power_mode_t mode;
struct scu_pd_data *scu_data = dev->data;
LOG_DBG("attempting PM action %d on rsrc %d", action, scu_data->rsrc);
switch (action) {
case PM_DEVICE_ACTION_RESUME:
mode = SC_PM_PW_MODE_ON;
break;
case PM_DEVICE_ACTION_SUSPEND:
mode = SC_PM_PW_MODE_OFF;
break;
case PM_DEVICE_ACTION_TURN_ON:
case PM_DEVICE_ACTION_TURN_OFF:
return 0;
default:
return -ENOTSUP;
}
ret = sc_pm_set_resource_power_mode(scu_data->handle,
scu_data->rsrc,
mode);
if (ret != SC_ERR_NONE) {
LOG_ERR("failed to set rsrc %d power mode to %d",
scu_data->rsrc, mode);
return -EIO;
}
return 0;
}
static int scu_pd_init(const struct device *dev)
{
int ret;
struct scu_pd_data *scu_data = dev->data;
ret = sc_ipc_open(&scu_data->handle, DT_REG_ADDR(DT_NODELABEL(scu_mu)));
if (ret != SC_ERR_NONE) {
return -ENODEV;
}
return pm_device_runtime_enable(dev);
}
#define SCU_PD_DEVICE_DEFINE(inst) \
\
BUILD_ASSERT(DT_INST_PROP(inst, nxp_resource_id) < IMX_SC_R_LAST, \
"invalid resource ID"); \
\
static struct scu_pd_data scu_pd_data_##inst = { \
.rsrc = DT_INST_PROP(inst, nxp_resource_id), \
}; \
\
PM_DEVICE_DT_INST_DEFINE(inst, scu_pd_pm_action); \
\
DEVICE_DT_INST_DEFINE(inst, scu_pd_init, PM_DEVICE_DT_INST_GET(inst), \
&scu_pd_data_##inst, NULL, PRE_KERNEL_1, \
CONFIG_POWER_DOMAIN_NXP_SCU_INIT_PRIORITY, \
NULL);
DT_INST_FOREACH_STATUS_OKAY(SCU_PD_DEVICE_DEFINE);