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st,stm32-ospi-nor (on ospi bus)

Vendor: STMicroelectronics

Description

STM32 OSPI Flash controller supporting the JEDEC CFI interface

Representation of a serial flash on a octospi bus:

    mx25lm51245: ospi-nor-flash@0 {
            compatible = "st,stm32-ospi-nor";
            label = "MX25LM512";
            reg = <0>;
            data-mode = <OSPI_OPI_MODE>; /* access on 8 data lines */
            data-rate = <OSPI_DTR_TRANSFER>; /* access in DTR */
            ospi-max-frequency = <DT_FREQ_M(50)>;
            size = <DT_SIZE_M(4)>;
            status = "okay";
    };

Properties

Node specific properties

Deprecated node specific properties

Base properties

Properties not inherited from the base binding file.

Name

Type

Details

ospi-max-frequency

int

 
Maximum clock frequency of device's OSPI interface in Hz

This property is required.

size

int

 
Flash Memory size in bits

This property is required.

reset-gpios

phandle-array

 
RESETn pin

spi-bus-width

int

 
The width of (Octo)SPI bus to which flash memory is connected.

Possible values are :
 - OSPI_SPI_MODE <1> = SPI mode on 1 data line
 - OSPI_OPI_MODE <8> = Octo SPI mode on 8 data lines

This property is required.

Legal values: 1, 8

data-rate

int

 
The SPI data Rate is STR or DTR

Possible values are :
 - OSPI_STR_TRANSFER <1> = Single Rate Transfer
 - OSPI_DTR_TRANSFER <2> = Dual Rate Transfer (only with OSPI_OPI_MODE)

This property is required.

Legal values: 1, 2

jedec-id

uint8-array

 
JEDEC ID as manufacturer ID, memory type, memory density

sfdp-bfp

uint8-array

 
Contains the 32-bit words in little-endian byte order from the
JESD216 Serial Flash Discoverable Parameters Basic Flash
Parameters table.  This provides flash-specific configuration
information in cases were runtime retrieval of SFDP data
is not desired.

quad-enable-requirements

string

 
Quad Enable Requirements value from JESD216 BFP DW15.

Use NONE if the device detects 1-1-4 and 1-4-4 modes by the
instruction.  Use S1B6 if QE is bit 6 of the first status register
byte, and can be configured by reading then writing one byte with
RDSR and WRSR.  For other fields see the specification.

Legal values: 'NONE', 'S2B1v1', 'S1B6', 'S2B7', 'S2B1v4', 'S2B1v5', 'S2B1v6'

enter-4byte-addr

int

 
Enter 4-Byte Addressing value from JESD216 BFP DW16

This property is ignored if the device is configured to use SFDP data
from the sfdp-bfp property (CONFIG_SPI_NOR_SFDP_DEVICETREE) or to read
SFDP properties at runtime (CONFIG_SPI_NOR_SFDP_RUNTIME).

For CONFIG_SPI_NOR_SFDP_MINIMAL this is the 8-bit value from bits 31:24
of DW16 identifying ways a device can be placed into 4-byte addressing
mode.  If provided as a non-zero value the driver assumes that 4-byte
addressing is require to access the full address range, and
automatically puts the device into 4-byte address mode when the device
is initialized.

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-ospi-nor” compatible.

Name

Type

Details

reg

array

 
register space

This property is required.

See Important properties for more information.

label

string

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

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

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.