Documentation/devicetree/bindings/pinctrl/ultrarisc,dp1000-pinctrl.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/pinctrl/ultrarisc,dp1000-pinctrl.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/pinctrl/ultrarisc,dp1000-pinctrl.yaml
Extension
.yaml
Size
3037 bytes
Lines
131
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/ultrarisc,dp1000-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: UltraRISC DP1000 Pin Controller

maintainers:
  - Jia Wang <wangjia@ultrarisc.com>

description: |
  UltraRISC RISC-V SoC DP1000 pin controller.
  The controller manages ports A, B, C, D and LPC. Ports A-D default to
  GPIO and provide additional SPI, UART, I2C, and PWM mux functions.
  LPC pins default to the LPC interface and can be muxed to eSPI.
  All pins also support pin configuration, including drive strength,
  pull-up, and pull-down settings.

properties:
  compatible:
    const: ultrarisc,dp1000-pinctrl

  reg:
    items:
      - description: pin controller registers

required:
  - compatible
  - reg

patternProperties:
  '.*-pins$':
    type: object
    unevaluatedProperties: false
    allOf:
      - $ref: /schemas/pinctrl/pincfg-node.yaml#
      - $ref: /schemas/pinctrl/pinmux-node.yaml#
      - if:
          properties:
            pins:
              items:
                minimum: 40
                maximum: 52
        then:
          properties:
            function:
              enum:
                - lpc
                - espi
        else:
          properties:
            pins:
              items:
                maximum: 39
            function:
              enum:
                - gpio
                - i2c
                - pwm
                - spi
                - uart

    properties:
      pins:
        description: |
          List of pins affected by this state node, using numeric pin IDs.
          Pins 0-39 correspond to ports A-D, and pins 40-52 correspond
          to LPC0-LPC12.
        $ref: /schemas/types.yaml#/definitions/uint32-array

Annotation

Implementation Notes