nxp,imx-flexspi-nor (on spi bus)
Vendor: NXP Semiconductors N.V.
Note
An implementation of a driver matching this compatible is available in drivers/flash/flash_mcux_flexspi_nor.c.
Description
NXP FlexSPI NOR
Properties
Node specific properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
|---|---|---|
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Chip select interval units, in serial clock cycles. See the
CSINTERVALUNIT field in registers FLASHA1CR0 through FLASHB2CR0. The
default corresponds to the reset value of the register field.
Default value: Legal values: |
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Minimum interval between chip select deassertion and assertion. See the
CSINTERVAL field in registers FLASHA1CR0 through FLASHB2CR0. The
default corresponds to the reset value of the register field.
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Chip select setup time, in serial clock cycles. See the TCSS field in
registers FLASHA1CR0 through FLASHB2CR0. The default corresponds to the
reset value of the register field.
Default value: |
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Chip select hold time, in serial clock cycles. See the TCSH field in
registers FLASHA1CR0 through FLASHB2CR0. The default corresponds to the
reset value of the register field.
Default value: |
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Data valid time, in nanoseconds. See the registers DLLACR through
DLLBCR.
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Column address bit width. Set to zero if the flash does not support
column address. See the CAS field in registers FLASHA1CR0 through
FLASHB2CR0. The default corresponds to the reset value of the register
field.
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Don't transmit the least significant address bit when the flash is word
addressable. See the WA field in registers FLASHA1CR0 through
FLASHB2CR0.
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AHB write wait interval units, in AHB clock cycles. See the AWRWAITUNIT
field in registers FLASHA1CR2 through FLASHB2CR2. The default
corresponds to the reset value of the register field.
Default value: Legal values: |
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Time to wait between AHB triggered command sequences. See the AWRWAIT
field in registers FLASHA1CR2 through FLASHB2CR2. The default
corresponds to the reset value of the register field.
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Maximum clock frequency of device's SPI interface in Hz
This property is required. |
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Duplex mode, full or half. By default it's always full duplex thus 0
as this is, by far, the most common mode.
Use the macros not the actual enum value, here is the concordance
list (see dt-bindings/spi/spi.h)
0 SPI_FULL_DUPLEX
2048 SPI_HALF_DUPLEX
Legal values: |
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Motorola or TI frame format. By default it's always Motorola's,
thus 0 as this is, by far, the most common format.
Use the macros not the actual enum value, here is the concordance
list (see dt-bindings/spi/spi.h)
0 SPI_FRAME_FORMAT_MOTOROLA
32768 SPI_FRAME_FORMAT_TI
Legal values: |
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SPI clock polarity which indicates the clock idle state.
If it is used, the clock idle state is logic high; otherwise, low.
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SPI clock phase that indicates on which edge data is sampled.
If it is used, data is sampled on the second edge; otherwise, on the first edge.
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In some cases, it is necessary for the master to manage SPI chip select
under software control, so that multiple spi transactions can be performed
without releasing it. A typical use case is variable length SPI packets
where the first spi transaction reads the length and the second spi transaction
reads length bytes.
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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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JEDEC ID as manufacturer ID, memory type, memory density
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flash capacity in bits
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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.
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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: |
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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.
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Number of bytes in a page from JESD216 BFP DW11
This property is only used in the CONFIG_SPI_NOR_SFDP_MINIMAL configuration.
It is ignored if the device is configured to use SFDP data
from the sfdp-bfp property (CONFIG_SPI_NOR_SFDP_DEVICETREE) or
if the SFDP parameters are read from the device at
runtime (CONFIG_SPI_NOR_SFDP_RUNTIME).
The default value is 256 bytes if the value is not specified.
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address alignment required by flash erase operations
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address alignment required by flash write operations
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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 “nxp,imx-flexspi-nor” compatible.
Name |
Type |
Details |
|---|---|---|
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register space
This property is required. See Important properties for more information. |
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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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Clock gate information
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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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