| Tom Rini | 6b642ac | 2024-10-01 12:20:28 -0600 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/input/ti,nspire-keypad.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: TI-NSPIRE Keypad |
| 8 | |
| 9 | maintainers: |
| 10 | - Andrew Davis <afd@ti.com> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: input.yaml# |
| 14 | - $ref: matrix-keymap.yaml# |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | enum: |
| 19 | - ti,nspire-keypad |
| 20 | |
| 21 | reg: |
| 22 | maxItems: 1 |
| 23 | |
| 24 | interrupts: |
| 25 | maxItems: 1 |
| 26 | |
| 27 | clocks: |
| 28 | maxItems: 1 |
| 29 | |
| 30 | scan-interval: |
| 31 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 32 | description: How often to scan in us. Based on a APB speed of 33MHz, the |
| 33 | maximum and minimum delay time is ~2000us and ~500us respectively |
| 34 | |
| 35 | row-delay: |
| 36 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 37 | description: How long to wait between scanning each row in us. |
| 38 | |
| 39 | active-low: |
| 40 | description: Specify that the keypad is active low. |
| 41 | |
| 42 | required: |
| 43 | - compatible |
| 44 | - reg |
| 45 | - interrupts |
| 46 | - clocks |
| 47 | - scan-interval |
| 48 | - row-delay |
| 49 | - linux,keymap |
| 50 | |
| 51 | unevaluatedProperties: false |
| 52 | |
| 53 | examples: |
| 54 | - | |
| 55 | #include <dt-bindings/input/input.h> |
| 56 | keypad@900e0000 { |
| 57 | compatible = "ti,nspire-keypad"; |
| 58 | reg = <0x900e0000 0x1000>; |
| 59 | interrupts = <16>; |
| 60 | |
| 61 | clocks = <&apb_pclk>; |
| 62 | |
| 63 | scan-interval = <1000>; |
| 64 | row-delay = <200>; |
| 65 | |
| 66 | linux,keymap = < |
| 67 | MATRIX_KEY(0, 0, KEY_ENTER) |
| 68 | MATRIX_KEY(0, 1, KEY_ENTER) |
| 69 | MATRIX_KEY(0, 4, KEY_SPACE) |
| 70 | MATRIX_KEY(0, 5, KEY_Z) |
| 71 | MATRIX_KEY(0, 6, KEY_Y) |
| 72 | MATRIX_KEY(0, 7, KEY_0) |
| 73 | >; |
| 74 | }; |