Re: [PATCH v2 2/2] arm64: dts: qcom: kaanapali: fix traceNoC probe issue

From: Konrad Dybcio

Date: Wed Jun 24 2026 - 09:27:41 EST


On 6/24/26 11:49 AM, Jie Gan wrote:
> The AMBA bus attempts to read the CID/PID of a device before invoking
> its probe function if the arm,primecell-periphid property is absent.
> This causes a deferred probe issue for the TraceNoC device, as the
> CID/PID cannot be read from the periphid register.

Why does it probe defer?

And is this required for all TNOC devices?

Konrad