| # 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: |
| oneOf: |
| - items: |
| - enum: |
| - adafruit,3108 # 0.56" 4-Digit 7-Segment FeatherWing Display (Red) |
| - adafruit,3130 # 0.54" Quad Alphanumeric FeatherWing Display (Red) |
| - const: holtek,ht16k33 |
| |
| - const: holtek,ht16k33 # Generic 16*8 LED controller with dot-matrix display |
| |
| reg: |
| maxItems: 1 |
| |
| refresh-rate-hz: |
| maxItems: 1 |
| description: Display update interval in Hertz for dot-matrix displays |
| |
| interrupts: |
| maxItems: 1 |
| |
| debounce-delay-ms: |
| maxItems: 1 |
| description: Debouncing interval time in milliseconds |
| |
| linux,keymap: true |
| |
| linux,no-autorepeat: |
| type: boolean |
| description: Disable keyrepeat |
| |
| default-brightness-level: |
| minimum: 1 |
| maximum: 16 |
| default: 16 |
| description: Initial brightness level |
| |
| led: |
| type: object |
| $ref: /schemas/leds/common.yaml# |
| unevaluatedProperties: false |
| |
| required: |
| - compatible |
| - reg |
| |
| if: |
| properties: |
| compatible: |
| const: holtek,ht16k33 |
| then: |
| required: |
| - refresh-rate-hz |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/interrupt-controller/irq.h> |
| #include <dt-bindings/input/input.h> |
| #include <dt-bindings/leds/common.h> |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| display-controller@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)>; |
| |
| led { |
| color = <LED_COLOR_ID_RED>; |
| function = LED_FUNCTION_BACKLIGHT; |
| linux,default-trigger = "backlight"; |
| }; |
| }; |
| }; |
