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st,stm32-fmc

Vendor: STMicroelectronics

Description

STM32 Flexible Memory Controller (FMC).

The FMC allows to interface with static-memory mapped external devices such as
SRAM, NOR Flash, NAND Flash, SDRAM...

All external memories share the addresses, data and control signals with the
controller. Each external device is accessed by means of a unique chip select.
The FMC performs only one access at a time to an external device.

The flexible memory controller includes three memory controllers:

  - NOR/PSRAM memory controller
  - NAND memory controller (some devices also support PC Card)
  - Synchronous DRAM (SDRAM/Mobile LPSDR SDRAM) controller

Each memory controller is defined below the FMC DeviceTree node and is managed
by a separate Zephyr device. However, because signals are shared the FMC
device handles the signals and the peripheral clocks. FMC can be enabled
in your board DeviceTree file like this:

&fmc {
    status = "okay";
    pinctrl-0 = <&fmc_nbl0_pe0 &fmc_nbl1_pe1 &fmc_nbl2_pi4...>;
};

Properties

Node specific properties

Deprecated node specific properties

Base 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.
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 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-fmc” 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.
clocks	phandle-array	Clock gate information This property is required.
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
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.