On 1/22/2024 4:42 PM, Krzysztof Kozlowski wrote:

On 19/01/2024 04:22, Tao Zhang wrote:

...

Add property "qcom,cmb-elem-size" to support CMB(Continuous Multi-Bit) element for TPDM. The associated aggregator will read this size before it is enabled. CMB element size currently only supports 32-bit and 64-bit.

Signed-off-by: Tao Zhangquic_taozha@quicinc.com Signed-off-by: Mao Jinlongquic_jinlmao@quicinc.com

---

.../bindings/arm/qcom,coresight-tpdm.yaml | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml index 61ddc3b5b247..507a5f887097 100644 --- a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml @@ -52,6 +52,15 @@ properties: $ref: /schemas/types.yaml#/definitions/uint8 enum: [32, 64]

• qcom,cmb-element-size:
• 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 only supports 8-bit, 32-bit
  

•  and 64-bit.
  

• $ref: /schemas/types.yaml#/definitions/uint8
• enum: [8, 32, 64]

Is this in bits? If so, then qcom,cmb-element-bits or something similar. I don't quite get what is "an element" here, but I assume you do, so you will come with reasonable name.

Yes, the unit of this element size is bit. This element size can be understood as that a

CMB data set consists of values that are all N-bit binary vectors where N is 8, 32, or

64 bits. How about if we use "qcom,cmb-element-bits" here instead of "qcom,cmb-element-size"?

...

• qcom,dsb-msrs-num: description: Specifies the number of DSB(Discrete Single Bit) MSR(mux select register)

@@ -110,4 +119,22 @@ examples: }; };

• tpdm@6c29000 {

You should explain why you need new example, so reviewers will not have to go back to previous discussions to ask the same question over and over again.

Sure, I will add the explanation to the comments of the next commit.

...

•  compatible = "qcom,coresight-tpdm", "arm,primecell";
  

•  reg = <0x06c29000 0x1000>;
  

•  qcom,cmb-element-size = /bits/ 8 <64>;
  

•  clocks = <&aoss_qmp>;
  

•  clock-names = "apb_pclk";
  

•  out-ports {
  

•    port {
  

•      tpdm_ipcc_out_funnel_center: endpoint {
  

•        remote-endpoint =
  

•          <&funnel_center_in_tpdm_ipcc>;
  

Drop unneeded wrapping / line break.

Sure, I will update in the next patch series.

Best,

Tao

Best regards, Krzysztof