Documentation/devicetree/bindings/fsi/fsi-master-gpio.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/fsi/fsi-master-gpio.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/fsi/fsi-master-gpio.yaml
Extension
.yaml
Size
1330 bytes
Lines
64
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/fsi/fsi-master-gpio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: fsi-master-gpio

maintainers:
  - Eddie James <eajames@linux.ibm.com>

allOf:
  - $ref: /schemas/fsi/fsi-controller.yaml

properties:
  compatible:
    items:
      - const: fsi-master-gpio

  clock-gpios:
    description: GPIO for FSI clock
    maxItems: 1

  data-gpios:
    description: GPIO for FSI data signal
    maxItems: 1

  enable-gpios:
    description: GPIO for enable signal
    maxItems: 1

  trans-gpios:
    description: GPIO for voltage translator enable
    maxItems: 1

  mux-gpios:
    description: GPIO for pin multiplexing with other functions (eg, external
      FSI masters)
    maxItems: 1

  no-gpio-delays:
    description:
      Don't add extra delays between GPIO accesses. This is useful when the HW
      GPIO block is running at a low enough frequency.
    type: boolean

required:
  - compatible
  - clock-gpios
  - data-gpios

unevaluatedProperties: false

examples:
  - |
    fsi-master {
        compatible = "fsi-master-gpio";
        clock-gpios = <&gpio 0>;
        data-gpios = <&gpio 1>;
        enable-gpios = <&gpio 2>;
        trans-gpios = <&gpio 3>;
        mux-gpios = <&gpio 4>;
    };

Annotation

Implementation Notes