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renesas,ra-gpio

Vendor: Renesas Electronics Corporation

Description

Renesas RA series GPIO

Properties

Top level properties

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

Node specific propertiesDeprecated node specific propertiesBase properties

Properties not inherited from the base binding file.

Name	Type	Details
gpio-controller	boolean	Convey's this node is a GPIO controller This property is required.
#gpio-cells	int	Number of items to expect in a GPIO specifier This property is required. Constant value: 2
ngpios	int	This property indicates the number of in-use slots of available slots for GPIOs. The typical example is something like this: the hardware register is 32 bits wide, but only 18 of the bits have a physical counterpart. The driver is generally written so that all 32 bits can be used, but the IP block is reused in a lot of designs, some using all 32 bits, some using 18 and some using 12. In this case, setting "ngpios = <18>;" informs the driver that only the first 18 GPIOs, at local offset 0 .. 17, are in use. For cases in which there might be holes in the slot range, this value should be the max slot number+1. Default value: 32
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
port-irq0-pins	array	Pins allow to assign port-irq0
port-irq1-pins	array	Pins allow to assign port-irq1
port-irq2-pins	array	Pins allow to assign port-irq2
port-irq3-pins	array	Pins allow to assign port-irq3
port-irq4-pins	array	Pins allow to assign port-irq4
port-irq5-pins	array	Pins allow to assign port-irq5
port-irq6-pins	array	Pins allow to assign port-irq6
port-irq7-pins	array	Pins allow to assign port-irq7
port-irq8-pins	array	Pins allow to assign port-irq8
port-irq9-pins	array	Pins allow to assign port-irq9
port-irq10-pins	array	Pins allow to assign port-irq10
port-irq11-pins	array	Pins allow to assign port-irq11
port-irq12-pins	array	Pins allow to assign port-irq12
port-irq13-pins	array	Pins allow to assign port-irq13
port-irq14-pins	array	Pins allow to assign port-irq14
port-irq15-pins	array	Pins allow to assign port-irq15

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