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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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ed872cea14
Add bindings for touchscreen controllers attached using the Z2 protocol. Those are present in most Apple devices. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Neal Gompa <neal@gompa.dev> Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com> Link: https://lore.kernel.org/r/20250217-z2-v6-1-c2115d6e5a8f@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
71 lines
1.6 KiB
YAML
71 lines
1.6 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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$id: http://devicetree.org/schemas/input/touchscreen/apple,z2-multitouch.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Apple touchscreens attached using the Z2 protocol
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maintainers:
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- Sasha Finkelstein <fnkl.kernel@gmail.com>
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description: A series of touschscreen controllers used in Apple products
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allOf:
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- $ref: touchscreen.yaml#
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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properties:
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compatible:
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enum:
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- apple,j293-touchbar
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- apple,j493-touchbar
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interrupts:
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maxItems: 1
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reset-gpios:
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maxItems: 1
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firmware-name:
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maxItems: 1
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apple,z2-cal-blob:
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$ref: /schemas/types.yaml#/definitions/uint8-array
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maxItems: 4096
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description:
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Calibration blob supplied by the bootloader
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required:
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- compatible
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- interrupts
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- reset-gpios
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- firmware-name
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- touchscreen-size-x
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- touchscreen-size-y
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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touchscreen@0 {
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compatible = "apple,j293-touchbar";
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reg = <0>;
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spi-max-frequency = <11500000>;
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reset-gpios = <&pinctrl_ap 139 GPIO_ACTIVE_LOW>;
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interrupts-extended = <&pinctrl_ap 194 IRQ_TYPE_EDGE_FALLING>;
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firmware-name = "apple/dfrmtfw-j293.bin";
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touchscreen-size-x = <23045>;
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touchscreen-size-y = <640>;
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};
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};
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...
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