linux-kernel - Re: [PATCH v4 2/3] dt-bindings: iio: adc: Add Allwinner D1/T113s/R329/T507 SoCs GPADC

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Date:   Sat, 10 Jun 2023 16:06:35 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Maksim Kiselev <bigunclemax@...il.com>
Cc:     linux-iio@...r.kernel.org, Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Cosmin Tanislav <demonsingur@...il.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        William Breathitt Gray <william.gray@...aro.org>,
        ChiYuan Huang <cy_huang@...htek.com>,
        Ramona Bolboaca <ramona.bolboaca@...log.com>,
        Ibrahim Tilki <Ibrahim.Tilki@...log.com>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        ChiaEn Wu <chiaen_wu@...htek.com>,
        Haibo Chen <haibo.chen@....com>,
        Leonard Göhrs <l.goehrs@...gutronix.de>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v4 2/3] dt-bindings: iio: adc: Add Allwinner
 D1/T113s/R329/T507 SoCs GPADC

Hey,

On Sat, Jun 10, 2023 at 03:29:08PM +0300, Maksim Kiselev wrote:
> From: Maxim Kiselev <bigunclemax@...il.com>
> 
> Allwinner's D1/T113s/R329/T507 SoCs have a new general purpose ADC.
> This ADC is the same for all of this SoCs. The only difference is
> the number of available channels.
> 
> Signed-off-by: Maxim Kiselev <bigunclemax@...il.com>
> ---
>  .../iio/adc/allwinner,sun20i-d1-gpadc.yaml    | 91 +++++++++++++++++++
>  1 file changed, 91 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml b/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml
> new file mode 100644
> index 000000000000..2b59844b7c07
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml
> @@ -0,0 +1,91 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/allwinner,sun20i-d1-gpadc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Allwinner D1 General Purpose ADC
> +
> +maintainers:
> +  - Maksim Kiselev <bigunclemax@...il.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - allwinner,sun20i-d1-gpadc
> +
> +  "#io-channel-cells":
> +    const: 1
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 0
> +
> +  clocks:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  reg:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +patternProperties:
> +  "^channel@([0-15])$":
> +    $ref: adc.yaml
> +    type: object
> +    description:
> +      Represents the internal channels of the ADC.
> +
> +    properties:
> +      reg:
> +        items:
> +          minimum: 0
> +          maximum: 15
> +
> +    required:
> +      - reg
> +
> +    additionalProperties: false
> +
> +required:
> +  - "#io-channel-cells"
> +  - clocks
> +  - compatible
> +  - interrupts
> +  - reg
> +  - resets
> +
> +unevaluatedProperties: false

How come this one changed to unevaluatedProperties: false?
Wasn't it for the ADC that we previously discussed whether
additionalProperties: false was correct or not?

Cheers,
Conor.

> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/sun20i-d1-ccu.h>
> +    #include <dt-bindings/reset/sun20i-d1-ccu.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    gpadc: adc@...9000 {
> +        compatible = "allwinner,sun20i-d1-gpadc";
> +        reg = <0x2009000 0x1000>;
> +        clocks = <&ccu CLK_BUS_GPADC>;
> +        resets = <&ccu RST_BUS_GPADC>;
> +        interrupts = <73 IRQ_TYPE_LEVEL_HIGH>;
> +        #io-channel-cells = <1>;
> +
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        channel@0 {
> +            reg = <0>;
> +        };
> +
> +        channel@1 {
> +            reg = <1>;
> +        };
> +    };
> +...
> -- 
> 2.39.2
> 

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