75 lines
1.5 KiB
YAML
75 lines
1.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/input/ti,nspire-keypad.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TI-NSPIRE Keypad
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maintainers:
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- Andrew Davis <afd@ti.com>
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allOf:
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- $ref: input.yaml#
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- $ref: matrix-keymap.yaml#
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properties:
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compatible:
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enum:
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- ti,nspire-keypad
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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maxItems: 1
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scan-interval:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: How often to scan in us. Based on a APB speed of 33MHz, the
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maximum and minimum delay time is ~2000us and ~500us respectively
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row-delay:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: How long to wait between scanning each row in us.
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active-low:
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description: Specify that the keypad is active low.
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- scan-interval
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- row-delay
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- linux,keymap
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/input/input.h>
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keypad@900e0000 {
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compatible = "ti,nspire-keypad";
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reg = <0x900e0000 0x1000>;
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interrupts = <16>;
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clocks = <&apb_pclk>;
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scan-interval = <1000>;
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row-delay = <200>;
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linux,keymap = <
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MATRIX_KEY(0, 0, KEY_ENTER)
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MATRIX_KEY(0, 1, KEY_ENTER)
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MATRIX_KEY(0, 4, KEY_SPACE)
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MATRIX_KEY(0, 5, KEY_Z)
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MATRIX_KEY(0, 6, KEY_Y)
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MATRIX_KEY(0, 7, KEY_0)
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>;
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};
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