nuvoton,numaker-pinctrl

Vendor: Nuvoton Technology Corporation

Note

An implementation of a driver matching this compatible is available in drivers/pinctrl/pinctrl_numaker.c.

Description

Pin controller is responsible for controlling pin function
selection and pin properties. For example, for example you can
use this node to set UART0 RX as pin PB12 to fulfill SYS_GPB_MFP3_PB12MFP_UART0_RXD.

The node has the 'pinctrl' node label set in your SoC's devicetree,
so you can modify it like this:

  &pinctrl {
          /* your modifications go here */
  };

All device pin configurations should be placed in child nodes of the
'pinctrl' node, as shown in this example:

  &pinctrl {
    /* configuration for the uart0 "default" state */
    uart0_default: uart0_default {
        /* configure PB13 as UART0 TX and PB12 as UART0 RX */
      group0 {
        pinmux = <PB12MFP_UART0_RXD>, <PB13MFP_UART0_TXD>;
      };
    };
  };


To link pin configurations with a device, use a pinctrl-N property for some
number N, like this example you could place in your board's DTS file:

  #include "board-pinctrl.dtsi"

  &uart0 {
      pinctrl-0 = <&uart0_default>;
      pinctrl-names = "default";
  };

Properties

Top level properties

These property descriptions apply to “nuvoton,numaker-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 “nuvoton,numaker-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.

Grandchild node properties

Name	Type	Details
pinmux	array	An array of pins sharing the same group properties. The pins should be defined using pre-defined macros or, alternatively, using NVT_PINMUX macros depending on the pinmux model used by the SoC series. This property is required.
drive-strength	string	Set the driving strength of a pin. Hardware default configuration is low and it's enough to drive most components, like as LED, CAN transceiver and so on. Default value: low Legal values: 'low', 'fast'
slew-rate	string	Set the speed of a pin. This setting effectively limits the slew rate of the output signal. Hardware default configuration is low. Fast slew rate could support fast speed pins, like as SPI CLK up to 50MHz. Default value: low Legal values: 'low', 'high', 'fast'
digital-path-disable	boolean	disable digital path on a pin.
drive-open-drain	boolean	drive with open drain (hardware AND)
input-schmitt-enable	boolean	enable schmitt-trigger mode