st,stm32-rng
Vendor: STMicroelectronics
Note
An implementation of a driver matching this compatible is available in drivers/entropy/entropy_stm32.c.
Description
STM32 Random Number Generator
Properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
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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.
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Magic Number to be written to Health Test Configuration Register (HTCR)
prior to real configuration, if any.
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Heath Test Configuration, necessary to have proper RNG behavior,
when available.
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Deprecated properties not inherited from the base binding file.
(None)
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 |
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register space
This property is required. See Important properties for more information. |
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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. |
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indicates the operational status of a device
Legal values: See Important properties for more information. |
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compatible strings
This property is required. See Important properties for more information. |
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name of each register space
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interrupts for device
See Important properties for more information. |
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extended interrupt specifier for device
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name of each interrupt
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phandle to interrupt controller node
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Human readable string describing the device (used as device_get_binding() argument)
See Important properties for more information. This property is deprecated. |
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name of each clock
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number of address cells in reg property
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number of size cells in reg property
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DMA channels specifiers
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Provided names of DMA channel specifiers
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IO channels specifiers
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Provided names of IO channel specifiers
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mailbox / IPM channels specifiers
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Provided names of mailbox / IPM channel specifiers
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Power domain specifiers
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Provided names of power domain specifiers
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Number of cells in power-domains property
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Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
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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.
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Automatically configure the device for runtime power management after the
init function runs.
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List of power states that will disable this device power.
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