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st,stm32wb-rcc

Vendor: STMicroelectronics

Description

STM32WB Reset and Clock controller node.
For more description confere st,stm32-rcc.yaml

Properties

Node specific properties

Deprecated node specific properties

Base properties

Properties not inherited from the base binding file.

Name

Type

Details

cpu1-prescaler

int

 
CPU1 prescaler. Sets a HCLK1 frequency (Core frequency)
lower than SYSCLK frequency.
The HCLK1 clocks CPU1, AHB1, AHB2, AHB3 and SRAM1.

This property is required.

Legal values: 1, 2, 3, 4, 5, 6, 8, 10, 16, 32, 64, 128, 256, 512

cpu2-prescaler

int

 
CPU2 prescaler. Sets HCLK2 frequency which clocks CPU2.
(A.K.A C2HPRE)

This property is required.

Legal values: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512

ahb4-prescaler

int

 
HCLK4 shared prescaler (AHB4, Flash memory and SRAM2).
(A.K.A SHDHPRE)

This property is required.

Legal values: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512

#clock-cells

int

 
Number of items to expect in a Clock specifier

This property is required.

Constant value: 2

clock-frequency

int

 
default frequency in Hz for clock output

This property is required.

apb1-prescaler

int

This property is required.

Legal values: 1, 2, 4, 8, 16

apb2-prescaler

int

This property is required.

Legal values: 1, 2, 4, 8, 16

undershoot-prevention

boolean

 
On some parts, it could be required to set up highest core frequencies
(>80MHz) in two steps in order to prevent undershoot.
This is done by applying an intermediate AHB prescaler before switching
System Clock source to PLL. Once done, prescaler is set back to expected
value.

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,stm32wb-rcc” compatible.

Name

Type

Details

reg

array

 
register space

This property is required.

See Important properties for more information.

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.

clocks

phandle-array

 
Clock gate information

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

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.

power-domain

phandle

 
Power domain the device belongs to.

The device will be notified when the power domain it belongs to is either
suspended or resumed.

Specifier cell names

  • clock cells: bus, bits