st,stm32-qspi

Vendor: STMicroelectronics N.V.

Description

These nodes are “qspi” bus nodes.

STM32 QSPI device representation. A stm32 quadspi node would typically
looks to this:

    &quadspi {
        pinctrl-0 = <&quadspi_clk_pe10 &quadspi_ncs_pe11
                     &quadspi_bk1_io0_pe12 &quadspi_bk1_io1_pe13
                     &quadspi_bk1_io2_pe14 &quadspi_bk1_io3_pe15>;

        dmas = <&dma1 5 5 0x0000 0x03>;
        dma-names = "tx_rx";

        status = "okay";
    };

Properties

Node specific properties

Properties not inherited from the base binding file.

Name

Type

Details

pinctrl-0

phandles

 
Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.

This property is required.

pinctrl-names

string-array

 
Names for the provided states. The number of names needs to match the
number of states.

This property is required.

dual-flash

boolean

 
configuration to enable the dual flash mode of the QSPI peripheral
where two external quad SPI Flash memories (FLASH 1 and FLASH 2) are used
in order to send/receive 8 bits (or 16 bits in DDR mode) every cycle,
effectively doubling the throughput as well as the capacity.
When true, the Flash ID number <flash-id> is useless.

flash-id

int

 
Flash ID number. This number, if defined, helps to select the right
QSPI GPIO banks (defined as 'quadspi_bk[1/2]' in pinctrl property)
to communicate with flash memory.
Valid only if the <dual-flash> is not set.

For example
   flash-id = <2>;

pinctrl-1

phandles

 
Pin configuration/s for the second state. See pinctrl-0.

pinctrl-2

phandles

 
Pin configuration/s for the third state. See pinctrl-0.

pinctrl-3

phandles

 
Pin configuration/s for the fourth state. See pinctrl-0.

pinctrl-4

phandles

 
Pin configuration/s for the fifth state. See pinctrl-0.

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-qspi” compatible.

Name

Type

Details

reg

array

 
register space

This property is required.

See Important properties for more information.

interrupts

array

 
interrupts for device

This property is required.

See Important properties for more information.

dmas

phandle-array

 
Optional DMA channel specifier. If DMA should be used, specifier should
hold a phandle reference to the dma controller (not the DMAMUX even if present),
the channel number, the slot number, channel configuration and finally features.
(depending on the type of DMA: 'features' is optional)

When a DMAMUX is present and enabled, the channel is the dma one
(not dmamux channel). The request is given by the DMAMUX (no 'features' required).

For example with DMA 2 for TX/RX on QSPI like stm32l496 (no 'features')
   /* select DMA2 channel 7 request 3 for QUADSPI */
   dmas = <&dma2 7 3 (STM32_DMA_PERIPH_TX | STM32_DMA_PRIORITY_HIGH)>;
For example with a DMAMUX for TX/RX on QSPI like stm32wb55  (no 'features')
   /* select DMA2 channel 0, request 20 for QUADSPI */
   dmas = <&dma2 0 20 (STM32_DMA_PERIPH_TX | STM32_DMA_PRIORITY_HIGH)>;

dma-names

string-array

 
DMA channel name. If DMA should be used, expected value is "tx_rx".

For example
   dma-names = "tx_rx";

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-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.

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

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.