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QCLINUX: clk: qcom: gcc-shikra: Use PWRSTS_RET_ON for USB GDSCs - #1255
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The USB GDSCs on IQ2390 are currently configured with PWRSTS_OFF_ON, which allows the GDSC framework to fully collapse these power domains during gdsc_disable(). When these GDSCs collapse, the corresponding USB PHY configurations are not retained in USB host mode use-cases and this breaks the resume of USB controller from suspend. To avoid this, configure the USB GDSC power states to PWRSTS_RET_ON. This prevents the GDSC from powering off during gdsc_disable(), and allows hardware to retain the PHY configurations across USB host mode use-cases. Signed-off-by: Akash Kumar <akakum@qti.qualcomm.com>
akakum-qualcomm
requested review from
a team,
Nicolas Dechesne (ndechesne),
Trilok Soni (trsoni) and
yijiyang
October 8, 2026 08:41
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Merge Check Failed: No Change Task Found No associated change tasks found for CR 4701374 on any of the following entities: Entities:
CR: 4701374 Please ensure the CR has a change task associated with at least one of the entities for this branch. |
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QCLINUX: clk: qcom: gcc-shikra: Use PWRSTS_RET_ON for USB GDSCs
The USB GDSCs on IQ2390 are currently configured with PWRSTS_OFF_ON,
which allows the GDSC framework to fully collapse these power domains
during gdsc_disable(). When these GDSCs collapse, the corresponding USB
PHY configurations are not retained in USB host mode use-cases and this
breaks the resume of USB controller from suspend.
To avoid this, configure the USB GDSC power states to PWRSTS_RET_ON. This
prevents the GDSC from powering off during gdsc_disable(), and allows
hardware to retain the PHY configurations across USB host mode use-cases.
Signed-off-by: Akash Kumar akakum@qti.qualcomm.com
CRs-Fixed: 4701374