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| Holtek ht16k33 RAM mapping 16*8 LED controller driver with keyscan
| -------------------------------------------------------------------------------
|
| Required properties:
| - compatible: "holtek,ht16k33"
| - reg: I2C slave address of the chip.
| - interrupts: Interrupt specification for the key pressed interrupt.
| - refresh-rate-hz: Display update interval in HZ.
| - debounce-delay-ms: Debouncing interval time in milliseconds.
| - linux,keymap: The keymap for keys as described in the binding
| document (devicetree/bindings/input/matrix-keymap.txt).
|
| Optional properties:
| - linux,no-autorepeat: Disable keyrepeat.
| - default-brightness-level: Initial brightness level [0-15] (default: 15).
|
| Example:
|
| &i2c1 {
| ht16k33: ht16k33@70 {
| compatible = "holtek,ht16k33";
| reg = <0x70>;
| refresh-rate-hz = <20>;
| debounce-delay-ms = <50>;
| interrupt-parent = <&gpio4>;
| interrupts = <5 (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_EDGE_RISING)>;
| 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)
| >;
| };
| };
|
|
