linux-kernel - Re: [PATCH v1 8/8] dt-bindings: arm: Add support for TPDM CMB element size

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Message-ID: <cc13d781-f6d8-0cb9-17e2-0a6089f60fd2@linaro.org>
Date:   Thu, 30 Mar 2023 09:54:39 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Mao Jinlong <quic_jinlmao@...cinc.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        coresight@...ts.linaro.org, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        Tingwei Zhang <quic_tingweiz@...cinc.com>,
        Yuanfang Zhang <quic_yuanfang@...cinc.com>,
        Tao Zhang <quic_taozha@...cinc.com>,
        Hao Zhang <quic_hazha@...cinc.com>
Subject: Re: [PATCH v1 8/8] dt-bindings: arm: Add support for TPDM CMB element
 size

On 29/03/2023 10:47, Mao Jinlong wrote:
> Add property "qcom,cmb-elem-size" to support CMB element for TPDM.
> The associated aggregator will read this size before it is enabled.
> CMB element size currently only supports 8-bit, 32-bit and 64-bit.
> 
> Signed-off-by: Mao Jinlong <quic_jinlmao@...cinc.com>
> ---
>  .../bindings/arm/qcom,coresight-tpdm.yaml        | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
> index 283dfb39d46f..c5169de81e58 100644
> --- a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
> +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
> @@ -53,6 +53,14 @@ properties:
>      minimum: 32
>      maximum: 64
>  
> +  qcom,cmb-element-size:

s/size/bits/
https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/property-units.yaml

> +    description:
> +      Specifies the CMB (Continuous multi-bit) element size supported by
> +      the monitor. The associated aggregator will read this size before it
> +      is enabled. CMB element size currently supports 8-bit, 32-bit, 64-bit.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    enum: [8, 32, 64]
> +
>    qcom,dsb_msr_num:
>      description:
>        Specifies the number of DSB(Discrete Single Bit) MSR(mux select register)
> @@ -95,6 +103,12 @@ required:
>    - clocks
>    - clock-names
>  
> +anyOf:
> +  - required:
> +      - qcom,dsb_msr_num

There is no such property.

> +  - required:
> +      - qcom,cmb-msr-num

Why this is part of this patch?

> +
>  additionalProperties: false
>  
>  examples:
> @@ -105,6 +119,8 @@ examples:
>        reg = <0x0684c000 0x1000>;
>  
>        qcom,dsb-element-size = <32>;
> +      qcom,cmb-element-size = <32>;
> +
>        qcom,dsb_msr_num = <16>;
>        qcom,cmb-msr-num = <6>;
>  

Best regards,
Krzysztof