Elixir Cross Referencer

Open Menu / Documentation / devicetree / bindings / auxdisplay / holtek,ht16k33.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/holtek,ht16k33.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Holtek HT16K33 RAM mapping 16*8 LED controller with keyscan

maintainers:
  - Robin van der Gracht <robin@protonic.nl>

allOf:
  - $ref: "/schemas/input/matrix-keymap.yaml#"

properties:
  compatible:
    const: holtek,ht16k33

  reg:
    maxItems: 1

  refresh-rate-hz:
    maxItems: 1
    description: Display update interval in Hertz

  interrupts:
    maxItems: 1

  debounce-delay-ms:
    maxItems: 1
    description: Debouncing interval time in milliseconds

  linux,keymap: true

  linux,no-autorepeat:
    description: Disable keyrepeat

  default-brightness-level:
    minimum: 1
    maximum: 16
    default: 16
    description: Initial brightness level

required:
  - compatible
  - reg
  - refresh-rate-hz

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/input/input.h>
    i2c1 {
            #address-cells = <1>;
            #size-cells = <0>;

            ht16k33: ht16k33@70 {
                    compatible = "holtek,ht16k33";
                    reg = <0x70>;
                    refresh-rate-hz = <20>;
                    interrupt-parent = <&gpio4>;
                    interrupts = <5 (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_EDGE_RISING)>;
                    debounce-delay-ms = <50>;
                    linux,keymap = <MATRIX_KEY(2, 0, KEY_F6)>,
                                   <MATRIX_KEY(3, 0, KEY_F8)>,
                                   <MATRIX_KEY(4, 0, KEY_F10)>,
                                   <MATRIX_KEY(5, 0, KEY_F4)>,
                                   <MATRIX_KEY(6, 0, KEY_F2)>,
                                   <MATRIX_KEY(2, 1, KEY_F5)>,
                                   <MATRIX_KEY(3, 1, KEY_F7)>,
                                   <MATRIX_KEY(4, 1, KEY_F9)>,
                                   <MATRIX_KEY(5, 1, KEY_F3)>,
                                   <MATRIX_KEY(6, 1, KEY_F1)>;
            };
      };