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ene,kb1200-pinctrl

Description

The ENE KB1200 pin controller is a singleton node responsible for controlling
pin function selection and pin properties. For example, you can use these
nodes to select peripheral pin functions.

Here is a list of supported standard pin properties:
  - bias-disable: Disable pull-up/down resistor.
  - bias-pull-up: Enable pull-up resistor.
  - bias-pull-down: Enable pull-down resistor.
  - drive-push-pull: Output driver is push-pull.
  - drive-open-drain: Output driver is open-drain.
  - output-disable: Disable GPIO output driver data
  - output-enable: Ensable GPIO output driver data
  - output-high: GPIO output data high
  - output-low: GPIO output data low
  - low-power-enable: Support input data ViH/ViL with low vlotage range(ex. 1.8V domain)

Here is a list of support pinmux type:
  - PINMUX_FUNC_A : GPIO        Function
  - PINMUX_FUNC_B : AltOutput 1 Function
  - PINMUX_FUNC_C : AltOutput 2 Function
  - PINMUX_FUNC_D : AltOutput 3 Function
  - PINMUX_FUNC_E : AltOutput 4 Function
  (Note. Alt-input function does not need to set pinmux type other than PINMUX_FUNC_A)

An example for KB1200, include the chip level pinctrl DTSI file in the
board level DTS:

  #include <ene_kb1200/ene_kb1200-pinctrl.dtsi>

We want to use the I2C0_0 port of the KB1200 controller and enable the
internal 3.3V pull-up if its i2c frequency won't exceed 400kHz. And we
need to set I2C0_0 pinmux type as PINMUX_FUNC_B (the alt-output 1
function) not a GPIO.

To change a pin's pinctrl default properties, add a reference to the
pin in the board's DTS file and set the properties as below:

  &i2c0_0 {
    pinctrl-0 = <&i2c0_clk_gpio2c &i2c0_dat_gpio2d>;
    pinctrl-names = "default";
  }

  /omit-if-no-ref/ i2c0_clk_gpio2c: i2c0_clk_gpio2c {
    pinmux = <ENE_KB1200_PINMUX(0x2C, PINMUX_FUNC_B)>;
    bias-pull-up;
  };
  /omit-if-no-ref/ i2c0_dat_gpio2d: i2c0_dat_gpio2d {
    pinmux = <ENE_KB1200_PINMUX(0x2D, PINMUX_FUNC_B)>;
    bias-pull-up;
  };

Properties

Top level properties

These property descriptions apply to “ene,kb1200-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 “ene,kb1200-pinctrl” compatible.

Name	Type	Details
`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.
`zephyr,disabling-power-states`	`phandles`	List of power states that will disable this device power.
`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`	`array`	register space 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
`zephyr,deferred-init`	`boolean`	Do not initialize device automatically on boot. Device should be manually initialized using device_init().

Child node properties

Name	Type	Details
`bias-disable`	`boolean`	disable any pin bias
`bias-pull-up`	`boolean`	enable pull-up resistor
`bias-pull-down`	`boolean`	enable pull-down resistor
`drive-push-pull`	`boolean`	drive actively high and low
`drive-open-drain`	`boolean`	drive with open drain (hardware AND)
`low-power-enable`	`boolean`	enable low power mode
`output-disable`	`boolean`	disable output on a pin (e.g. disable an output buffer)
`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
`pinmux`	`int`	Pinmux selection This property is required.