Add an active discharge api for regulators. This uses the already
existing but previously unused regulator-active-discharge
property.
Signed-off-by: Ryan McClelland <ryanmcclelland@meta.com>
There can be a case where not all regulators are being used,
resulting in an unused-const-variable warning,
so let's add a __maybe_unused keyword to suppress it.
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
The setting of initial state in handled by the common driver,
which calls the enable function for any regulator that has
regulator-boot-on set, and is not already enabled.
Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
Reference counting was broken when adding the enable delay.
Now reverted to previous pattern.
Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
This add regulator driver for Smartbond DA1469X SOC.
Driver can control VDD, V14, V18, V18P, V30 rails,
full voltage range supported by SOC is covered.
For VDD, V14, V18, V18P DCDC can be configured.
Special VDD_CLAMP (always on) and VDD_SLEPP are added
to allow configuration of VDD in sleep modes.
Signed-off-by: Jerzy Kasenberg <jerzy.kasenberg@codecoup.pl>
Do not enable subsystem/driver shell modules by default and stop abusing
CONFIG_SHELL_MINIMAL, which is internal to the shell subsystem, to decide
when to enable a driver shell.
The list of shell modules has grown considerably through the
years. Enabling CONFIG_SHELL for doing e.g. an interactive debug session
leads to a large number of shell modules also being enabled unless
explicitly disabled, which again leads to non-negligible increases in
RAM/ROM usage.
This commit attempts to establish a policy of subsystem/driver shell
modules being disabled by default, requiring the user/application to
explicitly enable only those needed.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
A configurable delay during regulator switch on is currently
only supported by the GPIO and fixed regulator drivers.
This functionality has been moved to the common driver, so it can
be easily added to any regulator driver.
Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
The load switch / LDO pin configuration function now
correctly configures the associated GPIO pin.
Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
Added boot state detection, so that the reference count is
set correctly and enable/disable work as expected.
With this fix it is no longer necessary to set
regulator-boot-on when the regulator is enabled in hardware.
Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
Add a new `clist` regulator shell subcommand that prints
the list of supported current limits for specified regulator device.
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Adds support for using the fixed and GPIO regulator drivers when
multithreading is disabled, such as in MCUboot.
Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>
Add binding, include header, and driver for NXP VREF IP block.
NXP VREF is an internal voltage reference generator on some SOCs
that fits well with the regulator API in zephyr.
Signed-off-by: Declan Snyder <declan.snyder@nxp.com>
Regulator voltage setting is not applied if the device output
is already configured for the requested voltage.
This change is needed to ensure correct device behaviour.
Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
AXP192 is a small power management IC, that also
features 5 GPIOS.
Besides GPIO driver this commit also includes needed modifications
in axp192 regulator and mfd driver as LDOIO0 functioanlity
is multiplexed with GPIO0 pin.
Signed-off-by: Martin Kiepfer <mrmarteng@teleschirm.org>
Add basic support of 'regulator-gpio'. For now, it is support
only controling voltage and driver presents only six functions:
* enable and disable the regulator;
* set and get voltage;
* count and list of voltage(s).
Signed-off-by: Mykola Kvach <mykola_kvach@epam.com>
Allow properties 'regulator-min-microvolt' and 'regulator-max-microvolt'
for fixed regulators: Note: they should be equal.
Add simple functions for getting list of allowed and count of voltages.
Signed-off-by: Mykola Kvach <mykola_kvach@epam.com>
Possible situation is that in some driver, devices can be controlled in
different ways: in some, we can only turn the power on or off, in others,
we can only control the voltage, and in some, we can control power supply
or voltage level. There may also be devices where there is no control
over power supply at all. A clear example of this can be eMMC devices
where the voltage is usually fixed and they are always powered on.
However, we would like to have a common code for controlling all the
mentioned types of devices, at least the driver shouldn't worry about the
implementation details of voltage regulators. Therefore, there may exist
empty regulators - regulators that only contain information about the
supported voltage, and we cannot change anything in them. The device tree
node description for such a regulator is only necessary for compatibility
with other regulators. Hence, we need to add the possibility of the
existence of such a dummy fixed-regulator.
In this commit, support for a fixed dummy regulator without the ability
for any control has been added. Note that such support also exists in the
Linux kernel. In other words, the logic of the fixed regulator has been
aligned with the logic of the fixed regulator inside the Linux kernel.
Signed-off-by: Mykola Kvach <mykola_kvach@epam.com>
AXP192 is a small and simple power management IC featuring different
LDOs, DCDCs, AINs and also GPIOs. It also offers functionaltiy for
battery management.
This change includes the basic regulator driver functionaltiy for
LDO2-3 and DCDC1-3 as well as the mfd driver layer. Further drivers
for GPIO and ADC will follow.
Drivers have been developed and tested on M5StackCore2, an ESP32-based
board. Support for M5StackCore2 is still in progress.
Signed-off-by: Martin Kiepfer <mrmarteng@teleschirm.org>
Static code analysis it has highlighted that a variable is beeing
accessed before initializing. This is a very minor fix
to resolve this potential issue.
Signed-off-by: Martin Kiepfer <mrmarteng@teleschirm.org>
Local register read/write functions have been removed and replaced
with calls to the new MFD functions.
Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
Add command to set DVS mode, to aid in testing regulators that expose
this functionality. Since DVS modes are device specific, take an integer
as the mode identifier and pass it to the driver directly.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Fix support for DVS modes, as the dvs_state_set implementation
previously had the mask and value parameters in the
i2c_reg_update_byte_dt function swapped.
Also, record the active DVS state and update the voltage get/set and
regulator enable/disable function to target the active DVS mode. This
will enable a user to configure multiple run modes, and modify target
voltages for those modes when in the new mode. When a user is utilizing
the MODESEL pins, update the active state but return an error so that
the application can still edit settings for the new DVS mode once it has
reconfigured the appropriate pins.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
The common init priority is a leftover from a previous implementation.
Remove it as it's not used.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Add a new regulator driver for Analog Devices ADP5360. While it is a MFD
device, only support for BUCK/BUCKBOOST regulators is added in this
patch.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
In some cases, the enable pin may be already enabled by a previous
stage, e.g. bootloader. Therefore, it is not desirable to disable
the pin, as it could cause malfunctioning of the device. Refactor init
procedure so that we pick the right GPIO flags during the first
configuration stage.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
In some cases, it may be desirable to not have thread-safe reference
counting. For example, when CONFIG_MULTITHREADING=n.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Remove all init functions that do nothing, and provide a `NULL` to
*DEVICE*DEFINE* macros.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
The regulator driver has a configured min/max range that is used
to limit set values, and to initialise the regulator.
A new init value has been added, so that the startup voltage can
be higher than the lowest permitted value.
Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
The current implementation always sets the voltage before enabling,
even if the current voltage is in the allowed range.
This has some side effects, i.e. for PMIC regulators that are
pre-programmed for a specific value but allow voltage changes during
runtime. The side effect being that the regulator will always be reset
to the lower value of the voltage range at init.
Another usecase would be when a bootloader sets a specific voltage then
loads an application that uses the same driver.
The proposed fix is to evaluate the current voltage and try to bring
the actual voltage in range if the current voltage is not valid
according to the min/max constraints.
Tested on custom SAMD20 board with a custom RK816 PMIC driver.
Signed-off-by: Ionut Catalin Pavel <iocapa@iocapa.com>
