From: Leo Yan <leo.yan@arm.com>
To: Jie Gan <jie.gan@oss.qualcomm.com>
Cc: Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Tingwei Zhang <tingwei.zhang@oss.qualcomm.com>,
Jingyi Wang <jingyi.wang@oss.qualcomm.com>,
Abel Vesa <abel.vesa@oss.qualcomm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Mike Leach <mike.leach@arm.com>,
James Clark <james.clark@linaro.org>,
Yuanfang Zhang <yuanfang.zhang@oss.qualcomm.com>,
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, coresight@lists.linaro.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 2/2] arm64: dts: qcom: kaanapali: fix traceNoC probe issue
Date: Wed, 24 Jun 2026 15:25:48 +0100 [thread overview]
Message-ID: <20260624142548.GA575984@e132581.arm.com> (raw)
In-Reply-To: <20260624-fix-tracenoc-probe-issue-v2-2-786520f62f21@oss.qualcomm.com>
On Wed, Jun 24, 2026 at 05:49:26PM +0800, 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.
> Add the arm,primecell-periphid property to bypass the AMBA bus
> check and resolve the probe issue.
tnoc.c registers both an AMBA driver and a platform driver. Shouldn't it
be registered as a platform device instead?
Thanks,
Leo
prev parent reply other threads:[~2026-06-24 14:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-24 9:49 [PATCH v2 0/2] Fix traceNoC probe issue on Kaanapali Jie Gan
2026-06-24 9:49 ` [PATCH v2 1/2] dt-bindings: arm: qcom,coresight-tnoc: allow arm,primecell-periphid Jie Gan
2026-06-24 9:49 ` [PATCH v2 2/2] arm64: dts: qcom: kaanapali: fix traceNoC probe issue Jie Gan
2026-06-24 13:27 ` Konrad Dybcio
2026-06-24 13:48 ` Jie Gan
2026-06-24 13:51 ` Suzuki K Poulose
2026-06-24 15:08 ` Jie Gan
2026-06-24 15:16 ` Leo Yan
2026-06-24 14:25 ` Leo Yan [this message]
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