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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/fsi/aspeed,ast2400-cf-fsi-master.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/fsi/aspeed,ast2400-cf-fsi-master.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: ASpeed ColdFire offloaded GPIO-based FSI master

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maintainers:

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

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allOf:

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

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properties:

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  compatible:

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    enum:

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      - aspeed,ast2400-cf-fsi-master

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      - aspeed,ast2500-cf-fsi-master

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  clock-gpios:

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    maxItems: 1

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    description: GPIO for FSI clock

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  data-gpios:

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    maxItems: 1

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    description: GPIO for FSI data signal

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  enable-gpios:

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    maxItems: 1

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    description: GPIO for enable signal

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  trans-gpios:

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    maxItems: 1

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    description: GPIO for voltage translator enable

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  mux-gpios:

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    maxItems: 1

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    description:

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      GPIO for pin multiplexing with other functions (eg, external FSI masters)

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  memory-region:

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    maxItems: 1

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    description:

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      Reference to the reserved memory for the ColdFire. Must be 2M aligned on

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      AST2400 and 1M aligned on AST2500.

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  aspeed,cvic:

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    description: Reference to the CVIC node.

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    $ref: /schemas/types.yaml#/definitions/phandle

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  aspeed,sram:

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    description: Reference to the SRAM node.

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    $ref: /schemas/types.yaml#/definitions/phandle

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required:

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  - compatible

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  - clock-gpios

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  - data-gpios

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  - enable-gpios

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  - trans-gpios

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  - mux-gpios

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  - memory-region

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  - aspeed,cvic

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  - aspeed,sram

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unevaluatedProperties: false

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examples:

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  - |

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    fsi-master {

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      compatible = "aspeed,ast2500-cf-fsi-master";

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      clock-gpios = <&gpio 0>;

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      data-gpios = <&gpio 1>;

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      enable-gpios = <&gpio 2>;

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      trans-gpios = <&gpio 3>;

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      mux-gpios = <&gpio 4>;

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      memory-region = <&coldfire_memory>;

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      aspeed,cvic = <&cvic>;

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      aspeed,sram = <&sram>;

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    };

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