intel,gpio

Vendor: Intel Corporation

Note

An implementation of a driver matching this compatible is available in drivers/gpio/gpio_intel.c.

Description

Intel GPIO node

Properties

Top level properties

These property descriptions apply to “intel,gpio” nodes themselves. This page also describes child node properties in the following sections.

Node specific properties

Properties not inherited from the base binding file.

Name

Type

Details

group-index

int

 
Group number for this GPIO entry

ngpios

int

 
Number of pins for this GPIO entry

Default value: 32

pin-offset

int

 
Pin offset of this GPIO entry

#gpio-cells

int

 
Number of items to expect in a GPIO specifier

This property is required.

Constant value: 2

acpi-hid

string

 
Used to supply OSPM with the device’s PNP ID or ACPI ID. A node is consder as acpi based or not based on whether this property is present or not.

acpi-uid

string

 
Provides OSPM with a logical device ID that does not change
across reboots. This object is optional, but is required when the device
has no other way to report a persistent unique device ID. The _UID must be
unique across all devices with either a common _HID or _CID.

acpi-comp-id

string-array

 
Used to supply OSPM with a device’s Plug and Play-Compatible Device ID

gpio-controller

boolean

 
Convey's this node is a GPIO controller

This property is required.

gpio-reserved-ranges

array

 
If not all the GPIOs at offsets 0...N-1 are usable for ngpios = <N>, then
this property contains an additional set of tuples which specify which GPIOs
are unusable. This property indicates the start and size of the GPIOs
that can't be used.

For example, setting "gpio-reserved-ranges = <3 2>, <10 1>;" means that
GPIO offsets 3, 4, and 10 are not usable, even if ngpios = <18>.

gpio-line-names

string-array

 
This is an array of strings defining the names of the GPIO lines
going out of the GPIO controller

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 “intel,gpio” compatible.

Name

Type

Details

reg

array

 
reg properties not required if acpi enumerated

See Important properties for more information.

interrupts

array

 
interrupts properties not required if acpi enumerated

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-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

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

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.

Child node properties

Name

Type

Details

gpio-hog

boolean

 
Conveys this node is a GPIO hog.

This property is required.

gpios

array

 
This is an array of GPIO specifiers (e.g. pin, flags) to be hogged. The number of array
entries must be an integer multiple of the number of GPIO specifier cells for the parent
GPIO controller.

This property is required.

input

boolean

 
If this property is set, the GPIO is configured as an input. This property takes
precedence over the output-low and output-high properties.

output-low

boolean

 
If this property is set, the GPIO is configured as an output set to logical low. This
property takes precedence over the output-high property.

output-high

boolean

 
If this property is set, the GPIO is configured as an output set to logical high.

line-name

string

 
Optional GPIO line name.

Specifier cell names

  • gpio cells: pin, flags