Factorize setting of frequency for busses.
Additionally, factorize SysCoreClock update.
The operations are now done twice in case of PLL since they are part
of LL utils PLL configuration function, but they are removed in next
commits.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Fix register bit field when clock source is MSI
on the stm32L0x or stm32L1x mcus
Use RCC_CR_MSIRGSEL bit field instead of not soc stm32wbx serie
That bit of the RCC CR is common to several stm32 mcus
Signed-off-by: Francois Ramu <francois.ramu@st.com>
Add STM32_FOO_ENABLED and STM32_FOO_FREQ to STM32 fixed clocks:
HSI, HSE, MSI(S), CSI, LSI, LSE..
Replace STM32_LSE_CLOCK by STM32_LSE_FREQ and when possible
replace by new STM32_LSE_ENABLED when making sense.
Fix STM32_PLL3_FOO_ENABLE to STM32_PLL3_FOO_ENABLED
Additionally, add STM32_PLL_FOO_ENABLED definitions.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is fixing the error on clock control for the AHB3
in the stm32_clock_control_off function.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
Refactors all of the clock control drivers to use a shared driver class
initialization priority configuration,
CONFIG_CLOCK_CONTROL_INIT_PRIORITY, to allow configuring clock control
drivers separately from other devices. This is similar to other driver
classes like I2C and SPI.
Most drivers previously used CONFIG_KERNEL_INIT_PRIORITY_OBJECTS or
CONFIG_KERNEL_INIT_PRIORITY_DEVICE, therefore the default for this new
option is the lower of the two, which means earlier initialization.
The even lower defaults for STM32 and Arm Beetle are preserved by
SoC-family level overrides.
Signed-off-by: Maureen Helm <maureen.helm@intel.com>
This constraint on the AHB prescaler is removed.
The ahb-prescaler is allow from 1-512.
For stm32 common and stm32U5 devices.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
When the MSI clock is selected as source on the stm32wbx device,
the MSI has a range to choose the MSI input frequency.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
On STM32WL, HSE clock can take 2 specific options:
-hse-tcxo
-hse-div2
Enable support for these options.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Fix macro used in g4 file to enable LSE clock.
Then, to avoid no-op configurations, generate an error
when MSI Hardware auto calibration is selected but LSE
clock is not enabled.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
To support single core stm32wlex series, cpu2 prescaler is set
only on dual core soc variants.
Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>
__LL_RCC_CALC_HCLK1_FREQ is only available for WL and WB series,
for other series __LL_RCC_CALC_HCLK_FREQ should be used.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
STM32WL series have an extra APB3 bus with the SUBGHZSPI device on it.
Add the relevant code to enable and disable that clock, and to obtain
the actual clock rate. This is enough to run the STM32 SPI driver
against it.
Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
This commit fixes the flash latency calulation in clock_control_init
for stm32wb and stm32wl series:
For these series new_hclk_freq can't be used to set the flash latency,
because the flash clk uses a different prescaler.
Without this fix, the flash latency could be set to an inadequat value
in cases wehere the new AHB3/AHB4 prescaler is different from the
new cpu1 prescler.
Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>
This commit adds missing initialization of rcc prescalers for
stm32wb and stm32wl series when hse or hsi are selected as
system clock.
Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>
stm32wb only has a single msi clock range, in contrast to wl, l4, l5
which have a second range that is active after exit from standby mode.
This difference must be taken account of in the driver.
This commit abstracts __LL_RCC_CALC_MSI_FREQ macro such that all series
can be supported, additionally the switch to the msirange
(LL_RCC_MSI_EnableRangeSelection) is now only executed on series
that support it.
As a result stm32wb socs can use msi as sysclock.
The same should be done for stm32l0, but this commit series limits
the scope of socs to avoid getting too bloated.
Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>
This commmit restructures the clock_controller code such that the cpu2
prescler assignment later can be excluded for single core socs.
The stm32wl mcu line has variants with a single cortex-m4 core
(stm32wle5), therefore the prescaler for the second clock should
only be set for dual core socs.
This commit still checks for the complete series
(CONFIG_SOC_SERIES_STM32WLX) as the single core variants are not
yet introduced, later the condition should check for a flag like
CONFIG_SOC_STM32WL5X instead.
Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>
This commit fixes several occurences where a struct members is wrongly
dereferenced, which causes a compile error in case the msi clock is used
as system clock.
Only affects stm32wb and stm32wl with MSI selected as sysclock.
Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>
LL_RCC_HSE_EnableBypass() doesn't exist on stm32wl,
but can be replaced by LL_RCC_HSE_EnableTcxo()
Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>
To allow transition to device tree based clock configuration on
stm32 targets, rework clock_control driver to use intermediate
STM32_ macros initially defined as the equivalent Kconfig macros
for now.
Propagate the change in all code using these macros.
The reason to introduce these new macros instead of configuring
Kconfig flags using dt kconfigfunctions is that we'll need
to be able to inform users that Kconfig flags are deprecated
once the whole family conversion is done, to encourage
out of tree users to adopt this new configuration scheme.
Note: For now STM32H7 series and code is excluded.
This is the same for some series specific code such as
PLL mul/div for L0/L1 and XTRE prescaler on F1 series.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This will export the stm32_clock_control_init function
to restore the clocks after the low power modes.
Signed-off-by: Francois Ramu <francois.ramu@st.com>
AHB3 bus support is added for compatible series.
Additionaly, fix condition for AHB2 support and fix
formatting
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Signed-off-by: Piotr Mienkowski <piotr.mienkowski@gmail.com>
-The STM32F410RB has no AHB2 bus so LL_AHB2_GRP1_EnableClock() and
LL_AHB2_GRP1_DisableClock() should not be called for this soc.
-The interrupt table had to be changed because of no OTG_FS_WKUP_IRQn
(no USB OTG at all).
Signed-off-by: Hans Unzner <hansunzner@gmail.com>
Convert clock_control drivers from:
DEVICE_AND_API_INIT -> DEVICE_DT_DEFINE
As part of this we also changed STM32_CLOCK_CONTROL_NAME to be based on
devicetree.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Some Clocks have ifdefs only for clock_control_on but are missing
them for clock_control_off.
Additionally return ahb_clock clock frequency for stm32g0
STM32_CLOCK_BUS_IOP in stm32_clock_control_get_subsys_rate.
Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>
1. clock: move the call for MSI hardware auto calibration enabling
before the control of MSI enable to ensure its execution in all
cases.
2. counter: add call for MSI hardware auto calibration enabling after
the LSE enabling and after possible backup domain reset that may
clear MSIPLLEN.
Signed-off-by: Giancarlo Stasi <giancarlo.stasi.co@gmail.com>
Assuming we stay on default Power Scale 1,
overdrive is required when System Core Clock frequency is higher
than 180MHz.
Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>
Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.
A coccinelle rule is used for this:
@r_const_dev_1
disable optional_qualifier
@
@@
-struct device *
+const struct device *
@r_const_dev_2
disable optional_qualifier
@
@@
-struct device * const
+const struct device *
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
According to RM, when increasing the CPU frequency, the new number of
wait states to the Flash latency bits must be written and verified
before modifying the CPU clock source and/or the CPU clock prescaler,
to prevent NMI to occur; when decreasing the CPU frequency, after.
Tested with STM32L462 SOC and MSI with several frequencies, both
increasing and decreasing. HSE built, not tested.
Signed-off-by: Giancarlo Stasi <giancarlo.stasi@nexxiot.com>
When MSI clock is used a source of PLL, it should be possible to
select its frequency range. Fix this.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
The build infrastructure should not be adding the drivers subdirectory
to the include path. Fix the legacy uses that depended on that
addition.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
The STM32G0 series of MCUs only has one APB, but two reset and clock
enable registers. Fix enabling/disabling the clock and getting the rate
for peripherals in the second register.
Signed-off-by: Filip Brozovic <fbrozovic@gmail.com>
STM32 clock control subsystem allows to configure a different
frequency value for core clock (SYSCLK) and AHB clock (HCLK).
Though, it is HCLK which is used to feed Cortex Systick timer
which is used in zephyr as reference system clock.
If HCLK frequency is configured to a different value from SYSCLK
frequency, whole system is exposed to desynchro between zephyr clock
subsytem and STM32 HW configuration.
To prevent this, and until zephyr clock subsystem is changed to be
aware of this potential configuration, enforce AHB prescaler value
to 1 (which is current default value in use for all STM32 based
boards).
On STM32H7, enforce D1CPRE which fills the same role as ABH precaler.
On STM32MP1, the equivalent setting is done on A7 core, so it is
not exposed to the same issue as long as SYS_CLOCK_HW_CYCLES_PER_SEC
is set with the 'mlhclk_ck' clock frequency value. Update
matching boards documentation.
Fixes#17188
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Add clock support for STM32G0X SoC series.
Signed-off-by: Philippe Retornaz <philippe@shapescale.com
Signed-off-by: Francois Ramu <francois.ramu@st.com>
move misc/util.h to sys/util.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
move clock_control.h to drivers/clock_control.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
soc_register.h is available in most of stm32 series.
It is sometime empty or contains includes to flash_registers.h,
which is included directly with direct reference in flash driver.
soc_register.h is also included in stm32 clock drivers, but this
driver do not use direct reference to any register anymore.
Clean up these files.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
https://github.com/zephyrproject-rtos/ci-tools/pull/65 tweaks the check
for references to undefined Kconfig symbol to whitelist anything on the
form 'CONFIG_FOO_*' (or 'CONFIG_FOO_*_...'). This is meant for #endif
comments that talk about many related symbols.
Fix two existing #endif comments to use that format, so that some
entries can be removed from the whitelist in the CI check.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Change file naming pattern from BoardNameX_ll_clock.c to
clock_BoardNameX.c
File containing LL functions will have the "_ll_" naming
scheme (such as clock_stm32_ll_common.c and .h)
Signed-off-by: Yaël Boutreux <yael.boutreux@st.com>
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
2019-04-26 02:56:20 -07:00
Renamed from drivers/clock_control/stm32_ll_clock.c (Browse further)
