ene,kb1200-pinctrl

Vendor: ENE Technology, Inc.

Note

An implementation of a driver matching this compatible is available in drivers/pinctrl/pinctrl_ene_kb1200.c.

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.

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 “ene,kb1200-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	No description provided for this label See Important properties for more information.
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	Pinmux selection 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-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