adi,max32-pinctrl

Vendor: Analog Devices, Inc.

Description

MAX32 Pin controller Node
Based on pincfg-node.yaml binding.

Note: `bias-disable`  are default pin configurations.

Properties

Top level properties

These property descriptions apply to “adi,max32-pinctrl” nodes themselves. This page also describes child node properties in the following sections.

Node specific properties

Properties not inherited from the base binding file.

(None)

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 “adi,max32-pinctrl” compatible.

Name

Type

Details

reg

array

 
register space

This property is required.

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

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

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

pinmux

int

 
Integer array, represents gpio pin number and mux setting.
These defines are calculated as: (pin<<8 | port<<4 | function<<0)
With:
- port: The gpio port index (0, 1, ...)
- pin: The pin offset within the port (0, 1, 2, ...)
- function: The function number, can be:
* 0 : GPIO
* 1 : Alternate Function 1
* 2 : Alternate Function 2
* 3 : Alternate Function 3
* 4 : Alternate Function 4
In case selected pin function is GPIO, pin is statically configured as
a plain input/output GPIO. Default configuration is input. Output value
can be configured by adding 'ouptut-low' or 'output-high' properties
to the pin configuration.

To simplify the usage, macro is available to generate "pinmux" field.
This macro is available here:
  -include/zephyr/dt-bindings/pinctrl/max32-pinctrl.h
Some examples of macro usage:
P0.9 set as alernate function 1
{
  pinmux = <MAX32_PINMUX(0, 9, AF1)>;
};
P0.9 set as alernate function 2
{
  pinmux = <MAX32_PINMUX(0, 9, AF2)>;
};
P0.9 set as GPIO output high
{
  pinmux = <MAX32_PINMUX(0, 9, GPIO)>;
  output-high;
};

This property is required.

power-source

int

 
GPIO Supply Voltage Select, Selects the voltage rail used for the pin.
0 or MAX32_VSEL_VDDIO
1 or MAX32_VSEL_VDDIOH

Legal values: 0, 1

drive-strength

int

 
There are 4 drive strength mode.
Mode 0: 1mA
Mode 1: 2mA
Mode 2: 4mA
Mode 3: 8mA
Default GPIO output drive strength is mode 0 for MAX32 MCUs.
For more information please take a look device user guide, datasheet.

Legal values: 0, 1, 2, 3

bias-disable

boolean

 
disable any pin bias

bias-pull-up

boolean

 
enable pull-up resistor

bias-pull-down

boolean

 
enable pull-down resistor

input-enable

boolean

 
enable input on pin (e.g. enable an input buffer, no effect on output)

output-enable

boolean

 
enable output on a pin without actively driving it (e.g. enable an output
buffer)

output-low

boolean

 
set the pin to output mode with low level

output-high

boolean

 
set the pin to output mode with high level