Re: [PATCH v2 1/9] dt-bindings: arm: Add support for DSB element

Suzuki K Poulose
2023-02-21T18:21:26Z

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@quicinc.com>
> Signed-off-by: Tao Zhang <taozha@qti.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