linux-kernel - Re: [PATCH 1/6] dt-bindings: qcom: geni-se: document I2C Master Hub wrapper variant

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Date:   Thu, 17 Nov 2022 15:43:26 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Neil Armstrong <neil.armstrong@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Andy Gross <agross@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>
Cc:     linux-i2c@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 1/6] dt-bindings: qcom: geni-se: document I2C Master Hub
 wrapper variant

On 16/11/2022 11:21, Neil Armstrong wrote:
> The I2C Master Hub is a stripped down version of the GENI Serial Engine
> QUP Wrapper Controller but only supporting I2C serial engines without
> DMA support.
> 
> This documents the variant compatible and forbids UART and SPI sub-nodes,

Do not use "This commit/patch".
https://elixir.bootlin.com/linux/v5.17.1/source/Documentation/process/submitting-patches.rst#L95

> and removes requirement for the Master AHB clock and iommu property.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
>  .../devicetree/bindings/soc/qcom/qcom,geni-se.yaml | 43 ++++++++++++++++++----
>  1 file changed, 35 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml
> index 2bf5293fc995..6657e74df629 100644
> --- a/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml
> +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,geni-se.yaml
> @@ -21,20 +21,15 @@ properties:
>    compatible:
>      enum:
>        - qcom,geni-se-qup
> +      - qcom,geni-se-i2c-master-hub
>  
>    reg:
>      description: QUP wrapper common register address and length.
>      maxItems: 1
>  
> -  clock-names:
> -    items:
> -      - const: m-ahb
> -      - const: s-ahb
> +  clock-names: true

minItems: 1, maxItems: 2, instead.

>  
> -  clocks:
> -    items:
> -      - description: Master AHB Clock
> -      - description: Slave AHB Clock
> +  clocks: true

minItems: 1, maxItems: 2, instead.

>  
>    "#address-cells":
>      const: 2
> @@ -81,6 +76,38 @@ patternProperties:
>      description: GENI Serial Engine based UART Controller.
>      $ref: /schemas/serial/qcom,serial-geni-qcom.yaml#
>  
> +if:

Put it under allOf, to avoid re-indenting when number of if's grow.

> +  properties:
> +    compatible:
> +      contains:
> +        const: qcom,geni-se-i2c-master-hub
> 

Best regards,
Krzysztof