linux-kernel - Re: [PATCH v5 2/3] dt-bindings: input: Add TouchNetix axiom touchscreen

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Message-ID: <20231213081448.GA2340704@kb-xps>
Date:   Wed, 13 Dec 2023 09:14:48 +0100
From:   Kamel Bouhara <kamel.bouhara@...tlin.com>
To:     Conor Dooley <conor@...nel.org>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Henrik Rydberg <rydberg@...math.org>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Marco Felsch <m.felsch@...gutronix.de>,
        Jeff LaBundy <jeff@...undy.com>,
        catalin.popescu@...ca-geosystems.com,
        mark.satterthwaite@...chnetix.com, bartp@...sheep.co.uk,
        hannah.rossiter@...chnetix.com,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Gregory Clement <gregory.clement@...tlin.com>,
        bsp-development.geo@...ca-geosystems.com
Subject: Re: [PATCH v5 2/3] dt-bindings: input: Add TouchNetix axiom
 touchscreen

Hi,

Le Tue, Dec 12, 2023 at 04:57:11PM +0000, Conor Dooley a écrit :
> On Mon, Dec 11, 2023 at 01:14:28PM +0100, Kamel Bouhara wrote:
> > Add the TouchNetix axiom I2C touchscreen device tree bindings
> > documentation.
> >
> > Signed-off-by: Kamel Bouhara <kamel.bouhara@...tlin.com>
> > ---
> >  .../input/touchscreen/touchnetix,ax54a.yaml   | 64 +++++++++++++++++++
> >  MAINTAINERS                                   |  6 ++
> >  2 files changed, 70 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/touchnetix,ax54a.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/input/touchscreen/touchnetix,ax54a.yaml b/Documentation/devicetree/bindings/input/touchscreen/touchnetix,ax54a.yaml
> > new file mode 100644
> > index 000000000000..cbdf48fc538b
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/input/touchscreen/touchnetix,ax54a.yaml
> > @@ -0,0 +1,64 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/input/touchscreen/touchnetix,ax54a.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: TouchNetix Axiom series touchscreen controller
> > +
> > +maintainers:
> > +  - Kamel Bouhara <kamel.bouhara@...tlin.com>
> > +
> > +allOf:
> > +  - $ref: /schemas/input/touchscreen/touchscreen.yaml#
>
> Weird, you add this ref here but do not actually allow any properties
> from it since you have "additionalProperties: false" below.
>
> What's the point of its inclusion?

Currently the driver doesn't use thoses properties but still some are
valid for this device.

Greetings,
Kamel

>
> Cheers,
> Conor.
>
> > +  - $ref: /schemas/input/input.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    const: touchnetix,ax54a
> > +
> > +  reg:
> > +    const: 0x66
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  reset-gpios:
> > +    maxItems: 1
> > +
> > +  vdda-supply:
> > +    description: Analog power supply regulator on VDDA pin
> > +
> > +  vddi-supply:
> > +    description: I/O power supply regulator on VDDI pin
> > +
> > +  poll-interval: true
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - vdda-supply
> > +  - vddi-supply
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/gpio/gpio.h>
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +    i2c {
> > +      #address-cells = <1>;
> > +      #size-cells = <0>;
> > +
> > +      touchscreen@66 {
> > +        compatible = "touchnetix,ax54a";
> > +        reg = <0x66>;
> > +        interrupt-parent = <&gpio2>;
> > +        interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
> > +        reset-gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
> > +        vdda-supply = <&vdda_reg>;
> > +        vddi-supply = <&vddi_reg>;
> > +        poll-interval = <20>;
> > +      };
> > +    };
> > +...
> > diff --git a/MAINTAINERS b/MAINTAINERS
> > index 7608b714653f..4752d8436dbb 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -21431,6 +21431,12 @@ S:	Maintained
> >  F:	Documentation/ABI/testing/sysfs-class-firmware-attributes
> >  F:	drivers/platform/x86/think-lmi.?
> >
> > +TOUCHNETIX AXIOM I2C TOUCHSCREEN DRIVER
> > +M:	Kamel Bouhara <kamel.bouhara@...tlin.com>
> > +L:	linux-input@...r.kernel.org
> > +S:	Maintained
> > +F:	Documentation/devicetree/bindings/input/touchscreen/touchnetix,ax54a.yaml
> > +
> >  THUNDERBOLT DMA TRAFFIC TEST DRIVER
> >  M:	Isaac Hazan <isaac.hazan@...el.com>
> >  L:	linux-usb@...r.kernel.org
> > --
> > 2.25.1
> >



--
Kamel Bouhara, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com