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dt-bindings: input: touchscreen: Add Z2 controller

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>

authored by

Sasha Finkelstein and committed by
Dmitry Torokhov ed872cea a7550ff5

+70
+70
Documentation/devicetree/bindings/input/touchscreen/apple,z2-multitouch.yaml
··· 1 + # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2 + %YAML 1.2 3 + --- 4 + $id: http://devicetree.org/schemas/input/touchscreen/apple,z2-multitouch.yaml# 5 + $schema: http://devicetree.org/meta-schemas/core.yaml# 6 + 7 + title: Apple touchscreens attached using the Z2 protocol 8 + 9 + maintainers: 10 + - Sasha Finkelstein <fnkl.kernel@gmail.com> 11 + 12 + description: A series of touschscreen controllers used in Apple products 13 + 14 + allOf: 15 + - $ref: touchscreen.yaml# 16 + - $ref: /schemas/spi/spi-peripheral-props.yaml# 17 + 18 + properties: 19 + compatible: 20 + enum: 21 + - apple,j293-touchbar 22 + - apple,j493-touchbar 23 + 24 + interrupts: 25 + maxItems: 1 26 + 27 + reset-gpios: 28 + maxItems: 1 29 + 30 + firmware-name: 31 + maxItems: 1 32 + 33 + apple,z2-cal-blob: 34 + $ref: /schemas/types.yaml#/definitions/uint8-array 35 + maxItems: 4096 36 + description: 37 + Calibration blob supplied by the bootloader 38 + 39 + required: 40 + - compatible 41 + - interrupts 42 + - reset-gpios 43 + - firmware-name 44 + - touchscreen-size-x 45 + - touchscreen-size-y 46 + 47 + unevaluatedProperties: false 48 + 49 + examples: 50 + - | 51 + #include <dt-bindings/gpio/gpio.h> 52 + #include <dt-bindings/interrupt-controller/irq.h> 53 + 54 + spi { 55 + #address-cells = <1>; 56 + #size-cells = <0>; 57 + 58 + touchscreen@0 { 59 + compatible = "apple,j293-touchbar"; 60 + reg = <0>; 61 + spi-max-frequency = <11500000>; 62 + reset-gpios = <&pinctrl_ap 139 GPIO_ACTIVE_LOW>; 63 + interrupts-extended = <&pinctrl_ap 194 IRQ_TYPE_EDGE_FALLING>; 64 + firmware-name = "apple/dfrmtfw-j293.bin"; 65 + touchscreen-size-x = <23045>; 66 + touchscreen-size-y = <640>; 67 + }; 68 + }; 69 + 70 + ...