Commit 4664b0bb authored by Chris Packham's avatar Chris Packham Committed by Andy Shevchenko
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dt-bindings: auxdisplay: Add bindings for generic 7-segment LED 



Add bindings for a generic 7-segment LED display using GPIOs.

Signed-off-by: default avatarChris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent 899383f9

Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/auxdisplay/gpio-7-segment.yaml#

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



title: GPIO based LED segment display



maintainers:

  - Chris Packham <chris.packham@alliedtelesis.co.nz>



properties:

  compatible:

    const: gpio-7-segment



  segment-gpios:

    description: |

      An array of GPIOs one per segment. The first GPIO corresponds to the A

      segment, the seventh GPIO corresponds to the G segment. Some LED blocks

      also have a decimal point which can be specified as an optional eighth

      segment.



               -a-

              |   |

              f   b

              |   |

               -g-

              |   |

              e   c

              |   |

               -d-  dp



    minItems: 7

    maxItems: 8



required:

  - segment-gpios



additionalProperties: false



examples:

  - |



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



    led-7seg {

        compatible = "gpio-7-segment";

        segment-gpios = <&gpio 0 GPIO_ACTIVE_LOW>,

                        <&gpio 1 GPIO_ACTIVE_LOW>,

                        <&gpio 2 GPIO_ACTIVE_LOW>,

                        <&gpio 3 GPIO_ACTIVE_LOW>,

                        <&gpio 4 GPIO_ACTIVE_LOW>,

                        <&gpio 5 GPIO_ACTIVE_LOW>,

                        <&gpio 6 GPIO_ACTIVE_LOW>;

    };