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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/gpio/lacie,netxbig-gpio-ext.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/gpio/lacie,netxbig-gpio-ext.yaml#

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

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title: NetxBig GPIO extension bus

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maintainers:

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  - Simon Guinot <simon.guinot@sequanux.org>

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description: >

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  GPIO extension bus found on some LaCie/Seagate boards

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  (Example: 2Big/5Big Network v2, 2Big NAS).

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properties:

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  compatible:

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    items:

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      - const: lacie,netxbig-gpio-ext

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  addr-gpios:

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    description: GPIOs representing the address register (LSB->MSB).

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    items:

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      - description: bit 0 (LSB)

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      - description: bit 1

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      - description: bit 2 (MSB)

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  data-gpios:

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    description: GPIOs representing the data register (LSB->MSB).

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    items:

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      - description: bit 0 (LSB)

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      - description: bit 1

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      - description: bit 2 (MSB)

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  enable-gpio:

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    description: Latches the new configuration (address, data) on raising edge.

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    maxItems: 1

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required:

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  - compatible

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  - addr-gpios

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  - data-gpios

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  - enable-gpio

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additionalProperties: false

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examples:

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  - |

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    #include <dt-bindings/gpio/gpio.h>

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    gpio {

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        compatible = "lacie,netxbig-gpio-ext";

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        addr-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH

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                      &gpio1 16 GPIO_ACTIVE_HIGH

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                      &gpio1 17 GPIO_ACTIVE_HIGH>;

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        data-gpios = <&gpio1 12 GPIO_ACTIVE_HIGH

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                      &gpio1 13 GPIO_ACTIVE_HIGH

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                      &gpio1 14 GPIO_ACTIVE_HIGH>;

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        enable-gpio = <&gpio0 29 GPIO_ACTIVE_HIGH>;

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    };

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