Re: [PATCH 1/4] arm64: dts: qcom: hamoa: Add CoreSight nodes for APSS debug block

[Jie Gan <jie.gan@oss.qualcomm.com>]

On 10/13/2026 8:46 PM, Konrad Dybcio wrote:
> On 9/22/26 12:35 PM, Jie Gan wrote:
>> The APSS debug block is built with CoreSight devices like ETM,
>> replicator, funnel and TMC ETF. Add dt nodes for these devices to enable
>> ETM trace.
>>
>> The replicator, funnel and TMC ETF nodes in this block are physically
>> powered by the CPU cluster power rail rather than by a dedicated always-on
>> rail. Add a power-domains property referencing the corresponding
>> cluster_pdN domain to each of these nodes, so their power state is
>> tied to the CPU cluster domain and the runtime PM core can power the
>> domain on before the devices are accessed and let it be powered off
>> otherwise.
>>
>> Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
>> ---
> 
> [...]
> 
>> +		funnel@12080000 {
>> +			compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
>> +			reg = <0x0 0x12080000 0x0 0x1000>;
>> +
>> +			clocks = <&aoss_qmp>;
>> +			clock-names = "apb_pclk";
>> +
>> +			in-ports {
> 
> No need for power-domains here? (also same question for the other
> platforms)

The power-domain only adds to the devices within the cluster. This 
funnel device doesnt sit in the CPU clusters.

Thanks,
Jie

> 
> Konrad