linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: pakala: enable ETR and CTCU devices

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Message-ID: <4c2c3578-867a-4a1c-9f3a-fa7506371795@oss.qualcomm.com>
Date: Tue, 3 Feb 2026 17:01:16 +0800
From: Jie Gan <jie.gan@....qualcomm.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>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Tingwei Zhang <tingwei.zhang@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] arm64: dts: qcom: pakala: enable ETR and CTCU devices



On 2/3/2026 4:56 PM, Konrad Dybcio wrote:
> On 2/3/26 9:08 AM, Jie Gan wrote:
>> Embedded Trace Router(ETR) is working as a DDR memory sink to collect
>> tracing data from source device and the CTCU device serves as the
>> control unit for the ETR device.
>>
>> Signed-off-by: Jie Gan <jie.gan@....qualcomm.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sm8750.dtsi | 177 +++++++++++++++++++++++++++++++++++
>>   1 file changed, 177 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi
>> index f56b1f889b85..1e39503360ef 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8750.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi
>> @@ -3574,6 +3574,35 @@ tcsrcc: clock-controller@...4008 {
>>   			#reset-cells = <1>;
>>   		};
>>   
>> +		ctcu@...01000 {
>> +			compatible = "qcom,pakala-ctcu", "qcom,sa8775p-ctcu";
> 
> With "sm8750" in the compatible:

will fix it.

Thanks,
Jie

> 
> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> 
> Konrad