On Fri, Jun 14, 2024 at 08:15:38PM +0800, Charles Wang wrote: > The Goodix GT7986U touch controller report touch data according to the > HID protocol through the SPI bus. However, it is incompatible with > Microsoft's HID-over-SPI protocol. > > Signed-off-by: Charles Wang <charles.goodix@xxxxxxxxx> > --- > .../bindings/input/goodix,gt7986u.yaml | 65 +++++++++++++++++++ > 1 file changed, 65 insertions(+) > create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7986u.yaml > > diff --git a/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml b/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml > new file mode 100644 > index 000000000..1c518d03b > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml > @@ -0,0 +1,65 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/input/goodix,gt7986u.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: GOODIX GT7986U SPI HID Touchscreen > + > +maintainers: > + - Charles Wang <charles.goodix@xxxxxxxxx> > + > +description: > + Supports the Goodix GT7986U touchscreen. > + This touch controller reports data packaged according to the HID protocol, > + but is incompatible with Microsoft's HID-over-SPI protocol. > + > +allOf: > + - $ref: /schemas/spi/spi-peripheral-props.yaml# > + > +properties: > + compatible: > + enum: > + - goodix,gt7986u > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + reset-gpios: > + maxItems: 1 > + description: reset gpio the chip is connected to. > + > + goodix,hid-report-addr: > + description: the register address for retrieving HID report data. > + $ref: /schemas/types.yaml#/definitions/uint32 > + > +additionalProperties: false unevaluatedProperties: false. Please test your binding w/ dt_binding_check. > + > +required: > + - compatible > + - reg > + - interrupts > + - goodix,hid-report-addr > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/irq.h> > + #include <dt-bindings/gpio/gpio.h> > + spi { > + #address-cells = <1>; > + #size-cells = <0>; > + num-cs = <1>; > + cs-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>; cs-gpios shouldn't be needed for a basic example. Blank line here before the child node please. Thanks, Conor. > + touchscreen@0 { > + compatible = "goodix,gt7986u"; > + reg = <0>; > + interrupt-parent = <&gpio>; > + interrupts = <25 IRQ_TYPE_LEVEL_LOW>; > + reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>; > + spi-max-frequency = <10000000>; > + goodix,hid-report-addr = <0x22c8c>; > + }; > + }; > -- > 2.43.0 > >
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