zephyr,fake-regulator
Vendor: Zephyr-specific binding
Note
An implementation of a driver matching this compatible is available in drivers/regulator/regulator_fake.c.
Description
Fake regulator, to be used as a mock or stub in tests.
An arbitrary number of children can be defined.
Properties
Top level properties
No top-level properties.
Child node properties
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Sets the is_enabled flag passed to regulator_common_init.
Allows test cases where the regulator is enabled in hardware.
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A string used as a descriptive name for regulator outputs
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Voltage set during initialisation
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smallest voltage consumers may set
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largest voltage consumers may set
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Offset applied to voltages to compensate for voltage drops
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Current set during initialisation
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smallest current consumers may set
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largest current consumers may set
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maximum input current regulator allows
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boolean, regulator should never be disabled
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bootloader/firmware enabled regulator.
It's expected that this regulator was left on by the bootloader.
If the bootloader didn't leave it on then OS should turn it on
at boot but shouldn't prevent it from being turned off later.
This property is intended to only be used for regulators where
software cannot read the state of the regulator.
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Regulator should be disabled on boot.
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allow the regulator to go into bypass mode
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allow the regulator performance level to be configured
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ramp delay for regulator(in uV/us) For hardware which supports disabling
ramp rate, it should be explicitly initialised to zero
(regulator-ramp-delay = <0>) for disabling ramp delay.
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The time taken, in microseconds, for the supply rail to reach the target
voltage, plus/minus whatever tolerance the board design requires. This
property describes the total system ramp time required due to the
combination of internal ramping of the regulator itself, and board design
issues such as trace capacitance and load on the supply.
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Settling time, in microseconds, for voltage change if regulator have the
constant time for any level voltage change. This is useful when regulator
have exponential voltage change.
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Settling time, in microseconds, for voltage increase if the regulator
needs a constant time to settle after voltage increases of any level. This
is useful for regulators with exponential voltage changes.
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Settling time, in microseconds, for voltage decrease if the regulator
needs a constant time to settle after voltage decreases of any level. This
is useful for regulators with exponential voltage changes.
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Enable soft start so that voltage ramps slowly
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Initial operating mode. The set of possible operating modes depends on the
capabilities of every hardware so each device binding documentation
explains which values the regulator supports.
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List of operating modes that software is allowed to configure for the
regulator at run-time. Elements may be specified in any order. The set of
possible operating modes depends on the capabilities of every hardware so
each device binding document explains which values the regulator supports.
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Load in uA present on regulator that is not captured by any consumer
request.
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Enable pull down resistor when the regulator is disabled.
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Enable over current protection.
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Set over current protection limit. This is a limit where hardware performs
emergency shutdown. Zero can be passed to disable protection and value '1'
indicates that protection should be enabled but limit setting can be
omitted.
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Set over current error limit. This is a limit where part of the hardware
probably is malfunctional and damage prevention is requested. Zero can be
passed to disable error detection and value '1' indicates that detection
should be enabled but limit setting can be omitted.
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Set over current warning limit. This is a limit where hardware is assumed
still to be functional but approaching limit where it gets damaged.
Recovery actions should be initiated. Zero can be passed to disable
detection and value '1' indicates that detection should be enabled but
limit setting can be omitted.
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Set over voltage protection limit. This is a limit where hardware performs
emergency shutdown. Zero can be passed to disable protection and value '1'
indicates that protection should be enabled but limit setting can be
omitted. Limit is given as microvolt offset from voltage set to regulator.
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Set over voltage error limit. This is a limit where part of the hardware
probably is malfunctional and damage prevention is requested Zero can be
passed to disable error detection and value '1' indicates that detection
should be enabled but limit setting can be omitted. Limit is given as
microvolt offset from voltage set to regulator.
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Set over voltage warning limit. This is a limit where hardware is assumed
still to be functional but approaching limit where it gets damaged.
Recovery actions should be initiated. Zero can be passed to disable
detection and value '1' indicates that detection should be enabled but
limit setting can be omitted. Limit is given as microvolt offset from
voltage set to regulator.
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Set over under voltage protection limit. This is a limit where hardware
performs emergency shutdown. Zero can be passed to disable protection and
value '1' indicates that protection should be enabled but limit setting
can be omitted. Limit is given as microvolt offset from voltage set to
regulator.
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Set under voltage error limit. This is a limit where part of the hardware
probably is malfunctional and damage prevention is requested Zero can be
passed to disable error detection and value '1' indicates that detection
should be enabled but limit setting can be omitted. Limit is given as
microvolt offset from voltage set to regulator.
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Set over under voltage warning limit. This is a limit where hardware is
assumed still to be functional but approaching limit where it gets
damaged. Recovery actions should be initiated. Zero can be passed to
disable detection and value '1' indicates that detection should be enabled
but limit setting can be omitted. Limit is given as microvolt offset from
voltage set to regulator.
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Set over temperature protection limit. This is a limit where hardware
performs emergency shutdown. Zero can be passed to disable protection and
value '1' indicates that protection should be enabled but limit setting
can be omitted.
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Set over temperature error limit. This is a limit where part of the
hardware probably is malfunctional and damage prevention is requested Zero
can be passed to disable error detection and value '1' indicates that
detection should be enabled but limit setting can be omitted.
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Set over temperature warning limit. This is a limit where hardware is
assumed still to be functional but approaching limit where it gets
damaged. Recovery actions should be initiated. Zero can be passed to
disable detection and value '1' indicates that detection should be enabled
but limit setting can be omitted.
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tristate, enable/disable active discharge of regulators. The values are:
0: Disable active discharge.
1: Enable active discharge.
Absence of this property will leave configuration to default.
Legal values: |
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Maximum difference between current and target voltages that can be changed
safely in a single step.
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Startup time, in microseconds
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Off to on delay time, in microseconds
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GPIO specifier that controls power to the device.
This property should be provided when the device has a dedicated
switch that controls power to the device. The supply state is
entirely the responsibility of the device driver.
Contrast with vin-supply.
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Reference to the regulator that controls power to the device.
The referenced devicetree node must have a regulator compatible.
This property should be provided when device power is supplied
by a shared regulator. The supply state is dependent on the
request status of all devices fed by the regulator.
Contrast with supply-gpios. If both properties are provided
then the regulator must be requested before the supply GPIOS is
set to an active state, and the supply GPIOS must be set to an
inactive state before releasing the regulator.
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