intel,gpio
Vendor: Intel Corporation
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.
Properties not inherited from the base binding file.
Name |
Type |
Details |
|---|---|---|
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Group number for this GPIO entry
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Number of pins for this GPIO entry
This property is required. Default value: |
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Pin offset of this GPIO entry
This property is required. |
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Number of items to expect in a GPIO specifier
This property is required. Constant value: |
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Convey's this node is a GPIO controller
This property is required. |
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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>.
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This is an array of strings defining the names of the GPIO lines
going out of the GPIO controller
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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 “intel,gpio” compatible.
Name |
Type |
Details |
|---|---|---|
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register space
This property is required. See Important properties for more information. |
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interrupts for device
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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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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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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Power domain the device belongs to.
The device will be notified when the power domain it belongs to is either
suspended or resumed.
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Automatically configure the device for runtime power management after the
init function runs.
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Child node properties
Name |
Type |
Details |
|---|---|---|
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Conveys this node is a GPIO hog.
This property is required. |
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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. |
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If this property is set, the GPIO is configured as an input. This property takes
precedence over the output-low and output-high properties.
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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.
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If this property is set, the GPIO is configured as an output set to logical high.
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Optional GPIO line name.
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Specifier cell names
gpio cells: pin, flags