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Date:   Sun, 31 Oct 2021 17:49:17 +0100
From:   Andreas Kemnade <andreas@...nade.info>
To:     Alistair Francis <alistair@...stair23.me>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        alistair23@...il.com, dmitry.torokhov@...il.com,
        linus.walleij@...aro.org, robh+dt@...nel.org, rydberg@...math.org,
        mylene.josserand@...e-electrons.com
Subject: Re: [PATCH 2/4] Documentation: DT: bindings: input: Add
 documentation for cyttsp5

Hi,

On Mon, 25 Oct 2021 21:42:12 +1000
Alistair Francis <alistair@...stair23.me> wrote:

> From: Mylène Josserand <mylene.josserand@...e-electrons.com>
> 
> 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 <mylene.josserand@...e-electrons.com>
> Message-Id: <20170529144538.29187-3-mylene.josserand@...e-electrons.com>
> Signed-off-by: Alistair Francis <alistair@...stair23.me>
> ---
>  .../input/touchscreen/cypress,cyttsp5.yaml    | 72 +++++++++++++++++++
>  1 file changed, 72 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,cyttsp5.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/cypress,cyttsp5.yaml b/Documentation/devicetree/bindings/input/touchscreen/cypress,cyttsp5.yaml
> new file mode 100644
> index 000000000000..0bddbd76a0c3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/touchscreen/cypress,cyttsp5.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/touchscreen/cypress,cyttsp5.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cypress cyttsp touchscreen controller, generation 5
> +
> +maintainers:
> +  - Alistair Francis <alistair@...stair23.me>
> +
> +allOf:
> +  - $ref: touchscreen.yaml#
> +
> +properties:
> +  compatible:
> +    const: cypress,cyttsp5
> +

you use buttons later, so it should be specified somewhere here.

> +  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.
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - vdd-supply
> +
> +additionalProperties: false
If you want to allow things from touchscreen.yaml, you should use
unevaluatedProperties: false.
> +
> +examples:
> +  - |

some includes are missing for the constants below here.
> +    i2c {

Regards,
Andreas

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