From: Sasha Finkelstein <fnkl.kernel@xxxxxxxxx> Add bindings for touchscreen controllers attached using the Z2 protocol. Those are present in most Apple devices. Signed-off-by: Sasha Finkelstein <fnkl.kernel@xxxxxxxxx> --- .../input/touchscreen/apple,z2-multitouch.yaml | 83 ++++++++++++++++++++++ 1 file changed, 83 insertions(+) diff --git a/Documentation/devicetree/bindings/input/touchscreen/apple,z2-multitouch.yaml b/Documentation/devicetree/bindings/input/touchscreen/apple,z2-multitouch.yaml new file mode 100644 index 0000000000000000000000000000000000000000..0387e2178b91d5658dfd60cb44099a8048dc97df --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/apple,z2-multitouch.yaml @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/apple,z2-multitouch.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple touchscreens attached using the Z2 protocol + +maintainers: + - Sasha Finkelstein <fnkl.kernel@xxxxxxxxx> + +description: A series of touschscreen controllers used in Apple products + +allOf: + - $ref: touchscreen.yaml# + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +properties: + compatible: + items: + - enum: + - apple,j293-touchbar + - apple,j493-touchbar + - const: apple,z2-touchbar + - const: apple,z2-multitouch + + interrupts: + maxItems: 1 + + reset-gpios: + maxItems: 1 + + cs-gpios: + maxItems: 1 + description: | + J293 has a hardware quirk where the CS line is unusable and has + to the be driven by a GPIO pin instead + + firmware-name: + maxItems: 1 + + label: + maxItems: 1 + + touchscreen-size-x: true + touchscreen-size-y: true + +required: + - compatible + - interrupts + - reset-gpios + - firmware-name + - label + - touchscreen-size-x + - touchscreen-size-y + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + + spi { + #address-cells = <1>; + #size-cells = <0>; + + touchscreen@0 { + compatible = "apple,j293-touchbar", "apple,z2-touchbar", + "apple,z2-multitouch"; + reg = <0>; + spi-max-frequency = <11500000>; + reset-gpios = <&pinctrl_ap 139 0>; + cs-gpios = <&pinctrl_ap 109 0>; + interrupts-extended = <&pinctrl_ap 194 IRQ_TYPE_EDGE_FALLING>; + firmware-name = "apple/dfrmtfw-j293.bin"; + touchscreen-size-x = <23045>; + touchscreen-size-y = <640>; + label = "MacBookPro17,1 Touch Bar"; + }; + }; + +... -- 2.47.1
