Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.yaml
Extension
.yaml
Size
2740 bytes
Lines
111
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.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/gpio/nvidia,tegra20-gpio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NVIDIA Tegra GPIO Controller (Tegra20 - Tegra210)

maintainers:
  - Thierry Reding <thierry.reding@gmail.com>
  - Jon Hunter <jonathanh@nvidia.com>

properties:
  compatible:
    oneOf:
      - enum:
          - nvidia,tegra20-gpio
          - nvidia,tegra30-gpio

      - items:
          - enum:
              - nvidia,tegra114-gpio
              - nvidia,tegra124-gpio
              - nvidia,tegra210-gpio
          - const: nvidia,tegra30-gpio

  reg:
    maxItems: 1

  interrupts:
    description: The interrupt outputs from the controller. For Tegra20,
      there should be 7 interrupts specified, and for Tegra30, there should
      be 8 interrupts specified.

  "#gpio-cells":
    description: The first cell is the pin number and the second cell is used
      to specify the GPIO polarity (0 = active high, 1 = active low).
    const: 2

  gpio-controller: true

  gpio-ranges:
    maxItems: 1

  "#interrupt-cells":
    description: |
      Should be 2. The first cell is the GPIO number. The second cell is
      used to specify flags:

        bits[3:0] trigger type and level flags:
          1 = low-to-high edge triggered.
          2 = high-to-low edge triggered.
          4 = active high level-sensitive.
          8 = active low level-sensitive.

      Valid combinations are 1, 2, 3, 4, 8.
    const: 2

  interrupt-controller: true

allOf:
  - if:
      properties:
        compatible:
          contains:
            const: nvidia,tegra30-gpio
    then:
      properties:
        interrupts:
          minItems: 8

Annotation

Implementation Notes