ti,cc13xx-cc26xx-pinctrl

Description

TI SimpleLink CC13xx / CC26xx pinctrl node.

Device pin configuration should be placed in the child nodes of this node.
Populate the 'pinmux' field with a pair consisting of a pin number and its IO
functions.

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 in the i2c0 example shown at the end.

Here is a list of
supported standard pin properties:

- bias-disable: Disable pull-up/down.
- bias-pull-down: Enable pull-down resistor.
- bias-pull-up: Enable pull-up resistor.
- drive-open-drain: Output driver is open-drain.
- drive-open-drain: Output driver is open-source.
- drive-strength: Minimum current that can be sourced from the pin.
- input-enable: enable input.
- input-schmitt-enable: enable input schmitt circuit.
- ti,input-edge-detect: enable and configure edge detection interrupts

An example for CC13XX family, include the chip level pinctrl
DTSI file in the board level DTS:

  #include <dt-bindings/pinctrl/cc13xx_cc26xx-pinctrl.h>

We want to configure the I2C pins to open drain, with pullup enabled
and input enabled.

To change a pin's pinctrl default properties add a reference to the
pin in the board's DTS file and set the properties.

  &i2c0 {
    pinctrl-0 = <&i2c0_scl_default &i2c0_sda_default>;
    pinctrl-1 = <&i2c0_scl_sleep &i2c0_sda_sleep>;
    pinctrl-names = "default", "sleep";
  }

The i2c0_scl_default corresponds to the following in the board dts file:

  &pinctrl {
    i2c0_scl_default: i2c0_scl_default {
      pinmux = <4 IOC_PORT_MCU_I2C_MSSCL>;
      bias-pull-up;
      drive-open-drain;
      input-enable;
    };
  };

To configure an input pin with edge detection (e.g. to count pulses):

  &pinctrl {
    gpt0_edge_counter: gpt0_edge_counter {
      pinmux = <15 IOC_PORT_MCU_PORT_EVENT0>;
      input-enable;
      bias-pull-up;
      ti,input-edge-detect = <IOC_RISING_EDGE>;
    };
  };

To configure an output pin (e.g. for PWM output):

  &pinctrl {
    gpt0_pwm: gpt0_pwm {
      pinmux = <16 IOC_PORT_MCU_PORT_EVENT1>;
      bias-disable;
      drive-strength = <8>; /* in mA */
    };
  };

Properties

Top level properties

These property descriptions apply to “ti,cc13xx-cc26xx-pinctrl” nodes themselves. This page also describes child node properties in the following sections.

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 “ti,cc13xx-cc26xx-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
`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.
`power-domain`	`phandle`	Power domain the device belongs to. The device will be notified when the power domain it belongs to is either suspended or resumed.
`zephyr,pm-device-runtime-auto`	`boolean`	Automatically configure the device for runtime power management after the init function runs.

Child node properties

Name	Type	Details
`pinmux`	`array`	CC13XX/CC26XX pin's configuration (IO pin, IO function). This property is required.
`drive-strength`	`int`	The drive strength controls the minimum output driver strength of an I/O pin configured as an output. 2: min 2 mA (SoC default) 4: min 4 mA 8: min 8 mA for for double drive strength IOs, min 4 mA for normal IOs Default value: `2` Legal values: `2`, `4`, `8`
`ti,input-edge-detect`	`int`	Enables or disables the edge detection interrupt and configures it: IOC_NO_EDGE: No edge detection (SoC default) IOC_FALLING_EDGE: Edge detection on falling edge IOC_RISING_EDGE: Edge detection on rising edge IOC_BOTH_EDGES: Edge detection on both edges
`bias-disable`	`boolean`	disable any pin bias
`bias-pull-up`	`boolean`	enable pull-up resistor
`bias-pull-down`	`boolean`	enable pull-down resistor
`drive-open-drain`	`boolean`	drive with open drain (hardware AND)
`drive-open-source`	`boolean`	drive with open source (hardware OR)
`input-enable`	`boolean`	enable input on pin (e.g. enable an input buffer, no effect on output)
`input-schmitt-enable`	`boolean`	enable schmitt-trigger mode