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Add qref and refgen supply for PCIe PHYs - #1732

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Add qref and refgen supply for PCIe PHYs#1732
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The QMP PCIe PHYs on QCS8300 require dedicated qref and refgen voltage
supplies for stable operation. Without these supplies, the system may
occasionally crash.

Add vdda-qref-supply and vdda-refgen-supply in the board files
(QCS8300-RIDE, Monaco-EVK and Monaco-Monza-SoM), and add refgen-supply
in the SoC DTSI (monaco.dtsi) since refgen is an on-chip regulator
shared across boards. The PHY driver votes for refgen3 directly as a
workaround for a hardware issue where QREF actually depends on refgen3
rather than refgen2 as documented.

qianyu-qcom and others added 2 commits August 24, 2026 10:45
…gulator"

This reverts commit 32998bb.

Signed-off-by: Qiang Yu <qiang.yu@oss.qualcomm.com>
…CIe PHYs

The QMP PCIe PHYs on QCS8300 require dedicated qref and refgen voltage
supplies for stable operation. Without these supplies, the system may
occasionally crash.

Add vdda-qref-supply and vdda-refgen-supply in the board files
(QCS8300-RIDE, Monaco-EVK and Monaco-Monza-SoM), and add refgen-supply
in the SoC DTSI (monaco.dtsi) since refgen is an on-chip regulator
shared across boards. The PHY driver votes for refgen3 directly as a
workaround for a hardware issue where QREF actually depends on refgen3
rather than refgen2 as documented.

Link: https://lore.kernel.org/all/20260810112735.1326807-4-ziyue.zhang@oss.qualcomm.com/
Fixes: 33967ea ("arm64: dts: qcom: qcs8300-ride: enable pcie0 interface")
Fixes: cdb613a ("arm64: dts: qcom: qcs8300-ride: enable pcie1 interface")
Fixes: 41e2424 ("arm64: dts: qcom: monaco-evk: Enable PCIe0 and PCIe1.")
Fixes: 5238f4e ("arm64: dts: qcom: Add Monaco Monza SoM")
Signed-off-by: Ziyue Zhang <ziyue.zhang@oss.qualcomm.com>
Signed-off-by: Qiang Yu <qiang.yu@oss.qualcomm.com>
@qcomlnxci
qcomlnxci requested review from a team, aiquny, Dmitry Baryshkov (lumag) and Kaushal Kumar (quic-kaushalk) and removed request for a team August 24, 2026 02:53

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Revert "QCLINUX: arch: arm64: qcom: qcs8300-ride: Enable PCIe Qref regulator"
This reverts commit 32998bb.

can you please put a rason to record why we are reverting this change. In this case for example to bring latest upstream version.

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2 participants