xref: /openbmc/linux/Documentation/devicetree/bindings/pinctrl/samsung,pinctrl-pins-cfg.yaml (revision 8a1e6bb3)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/samsung,pinctrl-pins-cfg.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Samsung S3C/S5P/Exynos SoC pin controller - pins configuration

maintainers:
  - Krzysztof Kozlowski <krzk@kernel.org>
  - Sylwester Nawrocki <s.nawrocki@samsung.com>
  - Tomasz Figa <tomasz.figa@gmail.com>

description: |
  This is a part of device tree bindings for Samsung S3C/S5P/Exynos SoC pin
  controller.

  Pins configuration for Samsung S3C/S5P/Exynos SoC pin controller.

  The values used for config properties should be derived from the hardware
  manual and these values are programmed as-is into the pin pull up/down and
  driver strength register of the pin-controller.
  See also include/dt-bindings/pinctrl/samsung.h with useful constants.

  See also Documentation/devicetree/bindings/pinctrl/samsung,pinctrl.yaml for
  additional information and example.

properties:
  samsung,pins:
    description: |
      List of pins to configure. For initial and sleep states, the maximum
      number is one pin. In other cases there is no upper limit.

      The pins should use lowercase names matching hardware manual, e.g. for
      GPA0 bank: gpa0-0, gpa0-1, gpa0-2.
    $ref: /schemas/types.yaml#/definitions/string-array

  samsung,pin-function:
    description: |
      The pin function selection that should be applied on the pins listed in the
      child node is specified using the "samsung,pin-function" property. The value
      of this property that should be applied to each of the pins listed in the
      "samsung,pins" property should be picked from the hardware manual of the SoC
      for the specified pin group. This property is optional in the child node if
      no specific function selection is desired for the pins listed in the child
      node. The value of this property is used as-is to program the pin-controller
      function selector register of the pin-bank.
    $ref: /schemas/types.yaml#/definitions/uint32
    minimum: 0
    maximum: 15

  samsung,pin-drv:
    description: Drive strength configuration.
    $ref: /schemas/types.yaml#/definitions/uint32
    minimum: 0
    maximum: 15

  samsung,pin-pud:
    description: Pull up/down configuration.
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [0, 1, 2, 3]

  samsung,pin-val:
    description: Initial value of pin output buffer.
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [0, 1]

  samsung,pin-con-pdn:
    description: Function in power down mode.
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [0, 1, 2, 3]

  samsung,pin-pud-pdn:
    description: Pull up/down configuration in power down mode.
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [0, 1, 2, 3]

required:
  - samsung,pins

additionalProperties: false