linux-kernel - Re: [PATCH v3 2/3] arm64: dts: qcom: sm8750: Add PCIe PHY and controller node

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Message-ID: <3e9b1488-7c87-4e2d-8500-30cae30e828c@oss.qualcomm.com>
Date: Thu, 2 Oct 2025 11:49:10 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Bjorn Andersson <bjorn.andersson@....qualcomm.com>,
        Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
Cc: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I
 <kishon@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kwilczynski@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Bjorn Helgaas
 <bhelgaas@...gle.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        quic_vbadigan@...cinc.com, quic_mrana@...cinc.com
Subject: Re: [PATCH v3 2/3] arm64: dts: qcom: sm8750: Add PCIe PHY and
 controller node

On 10/2/25 1:37 AM, Bjorn Andersson wrote:
> On Tue, Aug 26, 2025 at 04:32:54PM +0530, Krishna Chaitanya Chundru wrote:
>> Add PCIe controller and PHY nodes which supports data rates of 8GT/s
>> and x2 lane.
>>
> 
> I tried to boot the upstream kernel (next-20250925 defconfig) on my
> Pakala MTP with latest LA1.0 META and unless I disable &pcie0 the device
> is crashing during boot as PCIe is being probed.
> 
> Is this a known problem? Is there any workaround/changes in flight that
> I'm missing?

Would enabling USB fix it? I think we went over it with some other IP
block due to funny interconnect dependencies, but I'm surprised the series
for USB is still not fully brought to completion..

Konrad