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

[Jie Gan]

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@xxxxxxxxxxxxxxxx>
> > ---
>
> [...]
>
> > +		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