linux-kernel - Re: [PATCH v3 01/15] dt-bindings: iio: Add bindings for sx9310 sensor

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Message-ID: <20200801160639.1410944e@archlinux>
Date:   Sat, 1 Aug 2020 16:06:39 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Daniel Campello <campello@...omium.org>
Cc:     LKML <devicetree@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Rob Herring <robh+dt@...nel.org>,
        Douglas Anderson <dianders@...omium.org>,
        Stephen Boyd <swboyd@...omium.org>, linux-iio@...r.kernel.org
Subject: Re: [PATCH v3 01/15] dt-bindings: iio: Add bindings for sx9310
 sensor

On Fri, 31 Jul 2020 10:48:38 -0600
Daniel Campello <campello@...omium.org> wrote:

> Adds device tree bandings for sx9310 sensor.
> 
> Signed-off-by: Daniel Campello <campello@...omium.org>
> Cc: Hartmut Knaack <knaack.h@....de>
> Cc: Lars-Peter Clausen <lars@...afoo.de>
> Cc: Peter Meerwald-Stadler <pmeerw@...erw.net>
> Cc: Rob Herring <robh+dt@...nel.org>
> Reviewed-by: Douglas Anderson <dianders@...omium.org>
> [swboyd@...omium.org: Add both regulators and make them optional]
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
> ---
> 
> Changes in v3: None
> Changes in v2:
>  - Added #io-channel-cells as a required property
> 
>  .../iio/proximity/semtech,sx9310.yaml         | 65 +++++++++++++++++++
>  1 file changed, 65 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/proximity/semtech,sx9310.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/proximity/semtech,sx9310.yaml b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9310.yaml
> new file mode 100644
> index 00000000000000..5739074d3592fe
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9310.yaml
> @@ -0,0 +1,65 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/proximity/semtech,sx9310.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Semtech's SX9310 capacitive proximity sensor
> +
> +maintainers:
> +  - Daniel Campello <campello@...omium.org>
> +
> +description: |
> +  Semtech's SX9310/SX9311 capacitive proximity/button solution.
> +
> +  Specifications about the devices can be found at:
> +  https://www.semtech.com/products/smart-sensing/sar-sensors/sx9310
> +
> +properties:
> +  compatible:
> +    enum:
> +      - semtech,sx9310
> +      - semtech,sx9311
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    description:
> +      The sole interrupt generated by the device used to announce the
> +      preceding reading request has finished and that data is
> +      available or that a close/far proximity event has happened.
> +    maxItems: 1
> +
> +  vdd-supply:
> +    description: Main power supply
> +
> +  svdd-supply:
> +    description: Host interface power supply
> +
> +  "#io-channel-cells":
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - "#io-channel-cells"

Missed this in earlier review (only noticed when I saw whilst santity
checking earlier versions.

Fairly sure we should only need #io-channel-cells if we have
a consumer of a channel somewhere else in DT.  So it's not
required as far as I can see.

> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      proximity@28 {
> +        compatible = "semtech,sx9310";
> +        reg = <0x28>;
> +        interrupt-parent = <&pio>;
> +        interrupts = <5 IRQ_TYPE_LEVEL_LOW 5>;
> +        vdd-supply = <&pp3300_a>;
> +        svdd-supply = <&pp1800_prox>;
> +        #io-channel-cells = <1>;
> +      };
> +    };