st,stm32-rng

Vendor: STMicroelectronics N.V.

Note

An implementation of a driver matching this compatible is available in drivers/entropy/entropy_stm32.c.

Description

STM32 Random Number Generator

Properties

Node specific properties

Properties not inherited from the base binding file.

Name

Type

Details

nist-config

int

 
This property is used to configure the RNG_CR for the NIST certification
The validation conditions are following the refMan
to certify NIST SP800-90B. RNG clock source must be 48MHz.
This config is valid with some STM32 families
and when Conditioning Soft Reset (RNG_CR_CONDRST bit) exists.
The value is directly mapped from the RNG configuration (A) table.
The Health Register (health-test-config property) must correspond
to this table configuration.
On the stm32U5, the ARDIS bit7 is also written.

health-test-magic

int

 
Magic Number to be written to Health Test Configuration Register (HTCR)
prior to real configuration, if any.

health-test-config

int

 
Heath Test Configuration, necessary to have proper RNG behavior,
when available.

Deprecated node specific properties

Deprecated properties not inherited from the base binding file.

(None)

Base properties

Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “st,stm32-rng” compatible.

Name

Type

Details

reg

array

 
register space

This property is required.

See Important properties for more information.

clocks

phandle-array

 
Specifies the clock line to be enabled in clock controller as well as
the clock domain used, for instance:
          <&rcc STM32_SRC_MSI CLK48_SEL(3)> /* RNG clock domain set to MSI */
A correctly configured domain clock is required to allow the integrated low
sampling clock detection mechanism to behave properly.
In the provided example, MSI should be configured to provide 48Mhz clock.

This property is required.

status

string

 
indicates the operational status of a device

Legal values: 'ok', 'okay', 'disabled', 'reserved', 'fail', 'fail-sss'

See Important properties for more information.

compatible

string-array

 
compatible strings

This property is required.

See Important properties for more information.

reg-names

string-array

 
name of each register space

interrupts

array

 
interrupts for device

See Important properties for more information.

interrupts-extended

compound

 
extended interrupt specifier for device

interrupt-names

string-array

 
name of each interrupt

interrupt-parent

phandle

 
phandle to interrupt controller node

label

string

 
Human readable string describing the device (used as device_get_binding() argument)

See Important properties for more information.

This property is deprecated.

clock-names

string-array

 
name of each clock

#address-cells

int

 
number of address cells in reg property

#size-cells

int

 
number of size cells in reg property

dmas

phandle-array

 
DMA channels specifiers

dma-names

string-array

 
Provided names of DMA channel specifiers

io-channels

phandle-array

 
IO channels specifiers

io-channel-names

string-array

 
Provided names of IO channel specifiers

mboxes

phandle-array

 
mailbox / IPM channels specifiers

mbox-names

string-array

 
Provided names of mailbox / IPM channel specifiers

power-domains

phandle-array

 
Power domain specifiers

power-domain-names

string-array

 
Provided names of power domain specifiers

#power-domain-cells

int

 
Number of cells in power-domains property

zephyr,deferred-init

boolean

 
Do not initialize device automatically on boot. Device should be manually
initialized using device_init().

wakeup-source

boolean

 
Property to identify that a device can be used as wake up source.

When this property is provided a specific flag is set into the
device that tells the system that the device is capable of
wake up the system.

Wake up capable devices are disabled (interruptions will not wake up
the system) by default but they can be enabled at runtime if necessary.

zephyr,pm-device-runtime-auto

boolean

 
Automatically configure the device for runtime power management after the
init function runs.

zephyr,disabling-power-states

phandles

 
List of power states that will disable this device power.