linux-kernel - Re: [PATCH v7 3/5] dt-bindings: arm: Add Coresight TMC Control Unit hardware

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Message-ID: <767e2a81-17a6-48ae-932b-314cdfa8005a@quicinc.com>
Date: Fri, 13 Dec 2024 09:39:29 +0800
From: Jie Gan <quic_jiegan@...cinc.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Suzuki K Poulose
	<suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        James Clark
	<james.clark@...aro.org>,
        Alexander Shishkin
	<alexander.shishkin@...ux.intel.com>,
        Maxime Coquelin
	<mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
CC: Jinlong Mao <quic_jinlmao@...cinc.com>, <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>,
        <linux-arm-msm@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>
Subject: Re: [PATCH v7 3/5] dt-bindings: arm: Add Coresight TMC Control Unit
 hardware



On 12/13/2024 2:19 AM, Konrad Dybcio wrote:
> On 10.12.2024 4:15 AM, Jie Gan wrote:
>> Add binding file to specify how to define a Coresight TMC
>> Control Unit device in device tree.
>>
>> It is responsible for controlling the data filter function
>> based on the source device's Trace ID for TMC ETR device.
>> The trace data with that Trace id can get into ETR's buffer
>> while other trace data gets ignored.
>>
>> Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
>> Signed-off-by: Jie Gan <quic_jiegan@...cinc.com>
>> ---
> 
> [...]
> 
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - qcom,sa8775p-ctcu
> 
> I don't think anyone asked that question.. Is the TMCCU something unique
> to Qualcomm platforms?

Yes, only presents on Qualcomm platforms. That's why we try to upstream 
the driver.

> 
> Konrad

Thanks,
Jie