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ti,cc13xx-cc26xx-pinctrl

Vendor: Texas Instruments

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.
- input-enable: enable input.
- input-schmitt-enable: enable input schmitt circuit.

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;
    };
  };

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)

Child node properties

Name

Type

Details

pinmux

array

CC13XX/CC26XX pin's configuration (IO pin, IO function).

This property is required.

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 (no effect on output, such as enabling an input
buffer)

input-schmitt-enable

boolean

enable schmitt-trigger mode