FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/pinctrl/pincfg-node.yaml

     # SPDX-License-Identifier: GPL-2.0-only
     %YAML 1.2
     ---
     $id: http://devicetree.org/schemas/pinctrl/pincfg-node.yaml#
     $schema: http://devicetree.org/meta-schemas/core.yaml#
     
     title: Generic pin configuration node schema
     
     maintainers:
      - Linus Walleij <linus.walleij@linaro.org>
    
    description:
      Many data items that are represented in a pin configuration node are common
      and generic. Pin control bindings should use the properties defined below
      where they are applicable; not all of these properties are relevant or useful
      for all hardware or binding structures. Each individual binding document
      should state which of these generic properties, if any, are used, and the
      structure of the DT nodes that contain these properties.
    
    properties:
      bias-disable:
        type: boolean
        description: disable any pin bias
    
      bias-high-impedance:
        type: boolean
        description: high impedance mode ("third-state", "floating")
    
      bias-bus-hold:
        type: boolean
        description: latch weakly
    
      bias-pull-up:
        oneOf:
          - type: boolean
          - $ref: /schemas/types.yaml#/definitions/uint32
        description: pull up the pin. Takes as optional argument on hardware
          supporting it the pull strength in Ohm.
    
      bias-pull-down:
        oneOf:
          - type: boolean
          - $ref: /schemas/types.yaml#/definitions/uint32
        description: pull down the pin. Takes as optional argument on hardware
          supporting it the pull strength in Ohm.
    
      bias-pull-pin-default:
        oneOf:
          - type: boolean
          - $ref: /schemas/types.yaml#/definitions/uint32
        description: use pin-default pull state. Takes as optional argument on
          hardware supporting it the pull strength in Ohm.
    
      drive-push-pull:
        oneOf:
          - type: boolean
          - $ref: /schemas/types.yaml#/definitions/uint32
            enum: [ 0, 1 ]
            deprecated: true
        description: drive actively high and low
    
      drive-open-drain:
        oneOf:
          - type: boolean
          - $ref: /schemas/types.yaml#/definitions/uint32
            const: 1    # No known cases of 0
            deprecated: true
        description: drive with open drain
    
      drive-open-source:
        type: boolean
        description: drive with open source
    
      drive-strength:
        $ref: /schemas/types.yaml#/definitions/uint32
        description: sink or source at most X mA
    
      drive-strength-microamp:
        description: sink or source at most X uA
    
      input-enable:
        type: boolean
        description: enable input on pin (no effect on output, such as
          enabling an input buffer)
    
      input-disable:
        type: boolean
        description: disable input on pin (no effect on output, such as
          disabling an input buffer)
    
      input-schmitt-enable:
        type: boolean
        description: enable schmitt-trigger mode
    
      input-schmitt-disable:
        type: boolean
        description: disable schmitt-trigger mode
    
      input-debounce:
       $ref: /schemas/types.yaml#/definitions/uint32
       description: Takes the debounce time in usec as argument or 0 to disable
         debouncing
   
     power-source:
       $ref: /schemas/types.yaml#/definitions/uint32
       description: select between different power supplies
   
     low-power-enable:
       type: boolean
       description: enable low power mode
   
     low-power-disable:
       type: boolean
       description: disable low power mode
   
     output-disable:
       type: boolean
       description: disable output on a pin (such as disable an output buffer)
   
     output-enable:
       type: boolean
       description: enable output on a pin without actively driving it
         (such as enabling an output buffer)
   
     output-impedance-ohms:
       description: set the output impedance of a pin to at most X ohms
   
     output-low:
       type: boolean
       description: set the pin to output mode with low level
   
     output-high:
       type: boolean
       description: set the pin to output mode with high level
   
     sleep-hardware-state:
       type: boolean
       description: indicate this is sleep related state which will be
         programmed into the registers for the sleep state.
   
     slew-rate:
       $ref: /schemas/types.yaml#/definitions/uint32
       description: set the slew rate
   
     skew-delay:
       $ref: /schemas/types.yaml#/definitions/uint32
       description:
         this affects the expected clock skew on input pins
         and the delay before latching a value to an output
         pin. Typically indicates how many double-inverters are
         used to delay the signal.
   
   additionalProperties: true

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