Re: [PATCH v4 2/4] dt-bindings: input: Add Cypress TT2100 touchscreen controller
From: Rob Herring <robh@kernel.org>
Date: 2022-01-04 19:30:30
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linux-arm-kernel, linux-devicetree, lkml
On Wed, Dec 22, 2021 at 10:46:01PM +1000, Alistair Francis wrote:
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From: Mylène Josserand <redacted> Add the Cypress TrueTouch Generation 5 touchscreen device tree bindings documentation. It can use I2C or SPI bus. This touchscreen can handle some defined zone that are designed and sent as button. To be able to customize the keycode sent, the "linux,code" property in a "button" sub-node can be used. Signed-off-by: Mylène Josserand <redacted> Signed-off-by: Alistair Francis <redacted> --- .../input/touchscreen/cypress,tt21000.yaml | 92 +++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yamldiff --git a/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml b/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml new file mode 100644 index 000000000000..5a721d789c87 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml@@ -0,0 +1,92 @@ +# SPDX-License-Identifier: GPL-2.0-only
Dual license new bindings. GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/cypress,tt21000.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Cypress TT2100 touchscreen controller + +description: The Cypress TT2100 series (also known as "CYTTSP5" after + the marketing name Cypress TrueTouch Standard Product series 5). + +maintainers: + - Alistair Francis [off-list ref] + +allOf: + - $ref: touchscreen.yaml# + +properties: + compatible: + const: cypress,tt21000 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + vdd-supply: + description: Regulator for voltage. + + reset-gpios: + maxItems: 1 + + linux,code: + $ref: /schemas/types.yaml#/definitions/uint32 + description: EV_ABS specific event code generated by the axis. + +patternProperties: + "^button-[0-9]+$": + type: object + properties: + linux,code: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Keycode to emit + + required: + - linux,code + + additionalProperties: false + +required: + - compatible + - reg + - interrupts + - vdd-supply + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/input/linux-event-codes.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + touchscreen@24 { + compatible = "cypress,tt21000"; + reg = <0x24>; + pinctrl-names = "default"; + pinctrl-0 = <&tp_reset_ds203>; + interrupt-parent = <&pio>; + interrupts = <1 5 IRQ_TYPE_LEVEL_LOW>; + reset-gpios = <&pio 7 1 GPIO_ACTIVE_LOW>; + vdd-supply = <®_touch>; + + button-0 { + linux,code = <KEY_HOMEPAGE>; + }; + + button-1 { + linux,code = <KEY_MENU>; + }; + + button-2 { + linux,code = <KEY_BACK>; + }; + }; + }; +... -- 2.31.1