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Message-ID: <c55483da-8fa7-67d3-041d-930607768a2a@arm.com>
Date:   Tue, 21 Feb 2023 18:11:48 +0000
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     Tao Zhang <quic_taozha@...cinc.com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Konrad Dybcio <konradybcio@...il.com>,
        Mike Leach <mike.leach@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Jinlong Mao <quic_jinlmao@...cinc.com>,
        Leo Yan <leo.yan@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Tingwei Zhang <quic_tingweiz@...cinc.com>,
        Yuanfang Zhang <quic_yuanfang@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Hao Zhang <quic_hazha@...cinc.com>,
        linux-arm-msm@...r.kernel.org, bjorn.andersson@...aro.org,
        Tao Zhang <taozha@....qualcomm.com>
Subject: Re: [PATCH v2 1/9] dt-bindings: arm: Add support for DSB element

On 19/01/2023 07:41, Tao Zhang wrote:
> Add property "qcom,dsb-elem-size" to support DSB(Discrete Single
> Bit) element for TPDA. Specifies the DSB element size supported
> by each monitor connected to the aggregator on each port. Should
> be specified in pairs (port, dsb element size).
> 
> Signed-off-by: Tao Zhang <quic_taozha@...cinc.com>
> Signed-off-by: Tao Zhang <taozha@....qualcomm.com>
> ---
>   .../bindings/arm/qcom,coresight-tpda.yaml          | 22 ++++++++++++++++++++++
>   1 file changed, 22 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
> index 2ec9b5b..298db7f 100644
> --- a/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
> +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
> @@ -58,6 +58,26 @@ properties:
>       minItems: 1
>       maxItems: 2
>   
> +  qcom,dsb-element-size:
> +    description: |
> +      Specifies the DSB(Discrete Single Bit) element size supported by
> +      each monitor connected to the aggregator on each port. Should be
> +      specified in pairs <port, dsb element size>.

Isn't this a property of the TPDM connected to the port ? i.e. the DSB 
size ? Thus shouldn't this be part of the TPDM device (and the TPDA will 
be able to find it from the TPDM device) ?


Suzuki

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