drivers: stm32_rstctrl reset controller for stm32mp1 platforms

Implement stm32 platforms reset controller device, embedded upon
CFG_STM32_RSTCTRL=y.

The drivers exposes its reset controls to the dt

drivers: stm32_rstctrl reset controller for stm32mp1 platforms

Implement stm32 platforms reset controller device, embedded upon
CFG_STM32_RSTCTRL=y.

The drivers exposes its reset controls to the dt_driver provider and
with stm32mp1 platform legacy reset control API function:
stm32_reset_assert(), stm32_reset_deassert() and
stm32_reset_assert_deassert_mcu().

This change also removes source file stm32mp1_rcc.c that has moved
to drivers/rstctrl/stm32_rstctrl.c but stm32_rcc_base() definition
which is moved into to platform main.c.

Acked-by: Jerome Forissier <jerome@forissier.org>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>

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drivers: clk: move stm32mp1 clock driver to clock drivers directory

Moves stm32mp15 clock driver to core/drivers/clk and adds configuration
switch CFG_STM32MP15_CLK to embed or not the driver. Platf

drivers: clk: move stm32mp1 clock driver to clock drivers directory

Moves stm32mp15 clock driver to core/drivers/clk and adds configuration
switch CFG_STM32MP15_CLK to embed or not the driver. Platform stm32mp1
mandates CFG_STM32MP15_CLK=y.

Reviewed-by: Lionel Debieve <lionel.debieve@foss.st.com>
Acked-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>

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plat-stm32mp1: enable IO compensation at boot time

Implement platform functions stm32mp_syscfg_enable_io_compensation()
and stm32mp_syscfg_disable_io_compensation() to enable/disable
STM23MP1 IO com

plat-stm32mp1: enable IO compensation at boot time

Implement platform functions stm32mp_syscfg_enable_io_compensation()
and stm32mp_syscfg_disable_io_compensation() to enable/disable
STM23MP1 IO compensation. Enable IO compensation when platform boots.

This change defines SYSCFG clock that is needed and moves definition
of the RCC compatible string DT_RCC_CLK_COMPAT to RCC header file so
that it can be shared with stm32mp1_syscfg.c.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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plat-stm32mp1: platform driver for stpmic1

Implement STPMIC1 as PMIC (Power Management Integrated Circuit)
accessed through an I2C bus for stm32mp1 platforms. PMIC
configuration mandate device tree

plat-stm32mp1: platform driver for stpmic1

Implement STPMIC1 as PMIC (Power Management Integrated Circuit)
accessed through an I2C bus for stm32mp1 platforms. PMIC
configuration mandate device tree support as configuration
can be complex and specific per board.

At initialization Core looks for a PMIC I2C node in the FDT. If
found, it checks it can communicate with the PMIC and dump some
regulators for some debug support.

Save PMIC low power transition configuration as these information
will be needed from an unpaged execution context.

stm32mp_get_pmic()/stm32mp_put_pmic() helper functions are needed
to get/put PMIC resources.

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Forissier <jerome@forissier.org>

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stm32mp1: platform clocks driver

Introduce the stm32mp1 clock driver. This change defines the
structures used to describe the clock tree and the driver main API
functions:
- stm32_clock_enable()
- s

stm32mp1: platform clocks driver

Introduce the stm32mp1 clock driver. This change defines the
structures used to describe the clock tree and the driver main API
functions:
- stm32_clock_enable()
- stm32_clock_disable()
- stm32_clock_is_enabled()
- stm32_clock_get_rate()

The API is exported from stm32_util.h. Drivers are expected to include
stm32_util.h to access the platform clock support.

Note stm32_clock_get_rate() needs the root oscillator frequency values
Oscillators frequency depend on the board a.k.a the platform.
This information is currently missing in the driver. Introducing
CFG_xxx build directives it not the preferred way which is the DTB.
This change does not read root oscillators frequency value from the DTB.

Map RCC interface registers from RCC_BASE. RCC is the interface for
SoC clock configuration and control.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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stm32mp1: PWR support

PWR is a memory mapped SoC interface for power control. This change
maps and defines the interface for the stm32mp1 platform.

Signed-off-by: Etienne Carriere <etienne.carriere

stm32mp1: PWR support

PWR is a memory mapped SoC interface for power control. This change
maps and defines the interface for the stm32mp1 platform.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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stm32mp1: RCC support

RCC if the SoC interface for clocks, reset and some low power features.
The drivers is very specific to the platform stm32mp1 hence located
next to the platform specific source

stm32mp1: RCC support

RCC if the SoC interface for clocks, reset and some low power features.
The drivers is very specific to the platform stm32mp1 hence located
next to the platform specific source files.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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