Re: [PATCH v3 3/5] arm64: dts: qcom: kaanapali: fix traceNoC probe issue

[Jie Gan]

On 6/30/2026 8:53 PM, Konrad Dybcio wrote:
> On 6/30/26 12:36 PM, Jie Gan wrote:
> > The traceNoC node used the "qcom,coresight-tnoc", "arm,primecell"
> > compatible, which places the device on the AMBA bus. The AMBA peripheral
> > ID probing fails on this platform, so the device never probes.
>
> An interested reader would immediately expect an answer to why that's
> the case
>
> > Switch the node to the standalone "qcom,coresight-agtnoc" compatible.
> > Dropping "arm,primecell" makes the device probe through the platform
> > driver instead of the AMBA bus, which resolves the probe failure while
> > keeping it an Aggregator TNOC that retains ATID functionality.
>
> This describes OS behavior. Move your message towards the other
> compatible not depending on reading that ID register.

Thanks for the suggestion, will rephrase the description.

Thanks,
Jie

> Konrad