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drivers: clock_control: add mp2 clock driver

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Add the stm32mp2 clock driver to the clock_control subsystem. The driver
is a reduced version of the generic stm32 clock driver.

Signed-off-by: Youssef Zini <youssef.zini@savoirfairelinux.com>
This commit is contained in:
Youssef Zini 2025-04-22 13:42:07 +02:00 • committed by Benjamin Cabé
commit 9bc78cfee4
3 changed files with 76 additions and 0 deletions
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2
drivers/clock_control/CMakeLists.txt
View file

@ -67,6 +67,8 @@ if(CONFIG_SOC_SERIES_STM32MP1X)
zephyr_library_sources(clock_stm32_ll_mp1.c)
elseif(CONFIG_SOC_SERIES_STM32MP13X)
zephyr_library_sources(clock_stm32_ll_mp13.c)
elseif(CONFIG_SOC_SERIES_STM32MP2X)
zephyr_library_sources(clock_stm32_ll_mp2.c)
elseif(CONFIG_SOC_SERIES_STM32H7X)
zephyr_library_sources(clock_stm32_ll_h7.c)
elseif(CONFIG_SOC_SERIES_STM32H7RSX)

72
drivers/clock_control/clock_stm32_ll_mp2.c Normal file
View file

@ -0,0 +1,72 @@
/*
* Copyright (C) 2025 Savoir-faire Linux, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <soc.h>
#include <stm32_ll_bus.h>
#include <stm32_ll_rcc.h>
#include <zephyr/arch/cpu.h>
#include <zephyr/drivers/clock_control/stm32_clock_control.h>
#include <zephyr/sys/util.h>
static int stm32_clock_control_on(const struct device *dev, clock_control_subsys_t sub_system)
{
struct stm32_pclken *pclken = (struct stm32_pclken *) sub_system;
ARG_UNUSED(dev);
if (!IN_RANGE(pclken->bus, STM32_CLOCK_PERIPH_MIN, STM32_CLOCK_PERIPH_MAX)) {
/* Attempt to change a wrong periph clock bit */
return -ENOTSUP;
}
sys_set_bits(DT_REG_ADDR(DT_NODELABEL(rcc)) + pclken->bus, pclken->enr);
return 0;
}
static int stm32_clock_control_off(const struct device *dev, clock_control_subsys_t sub_system)
{
struct stm32_pclken *pclken = (struct stm32_pclken *) sub_system;
ARG_UNUSED(dev);
if (!IN_RANGE(pclken->bus, STM32_CLOCK_PERIPH_MIN, STM32_CLOCK_PERIPH_MAX)) {
/* Attempt to toggle a wrong periph clock bit */
return -ENOTSUP;
}
sys_clear_bits(DT_REG_ADDR(DT_NODELABEL(rcc)) + pclken->bus, pclken->enr);
return 0;
}
static int stm32_clock_control_get_subsys_rate(const struct device *dev,
clock_control_subsys_t sub_system, uint32_t *rate)
{
ARG_UNUSED(dev);
ARG_UNUSED(sub_system);
ARG_UNUSED(rate);
return -ENOTSUP;
}
static DEVICE_API(clock_control, stm32_clock_control_api) = {
.on = stm32_clock_control_on,
.off = stm32_clock_control_off,
.get_rate = stm32_clock_control_get_subsys_rate,
};
static int stm32_clock_control_init(const struct device *dev)
{
ARG_UNUSED(dev);
return 0;
}
/**
* @brief RCC device, note that priority is intentionally set to 1 so
* that the device init runs just after SOC init
*/
DEVICE_DT_DEFINE(DT_NODELABEL(rcc), stm32_clock_control_init, NULL, NULL, NULL, PRE_KERNEL_1,
CONFIG_CLOCK_CONTROL_INIT_PRIORITY, &stm32_clock_control_api);

2
include/zephyr/drivers/clock_control/stm32_clock_control.h
View file

@ -41,6 +41,8 @@
#elif defined(CONFIG_SOC_SERIES_STM32L4X) || \
defined(CONFIG_SOC_SERIES_STM32L5X)
#include <zephyr/dt-bindings/clock/stm32l4_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32MP2X)
#include <zephyr/dt-bindings/clock/stm32mp2_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32WBX)
#include <zephyr/dt-bindings/clock/stm32wb_clock.h>
#elif defined(CONFIG_SOC_SERIES_STM32WB0X)