[PATCH v3 00/10] Flatten USB Controller Nodes on IPQ SoCs
From: George Moussalem via B4 Relay <devnull+george.moussalem.outlook.com@kernel.org>
Date: 2026-09-06 04:47:01
Also in:
b4-sent, linux-arm-msm, linux-usb, lkml
Add ability to pass the UTMI clock rate to the DWC3 core to calculate the right values for the period and frame length adjustment. This is required for USB controllers on chipsets where the computed values for the period and frame length adjustment differ from hardware defaults based on the UTMI clock rate. Flatten usb controller node and update to using latest bindings and flattened driver approach. In addition, set the right UTMI clock rate and override any clock rate inherited from the bootloader. I've split these patches from a larger patch set to add USB3 support on IPQ5018 and IPQ5332 SoCs where these patches are required to ensure new functionality is added to the new flattened driver and binding model. link: https://lore.kernel.org/all/20260812-ipq5018-usb3-v2-0-8f355d7ff0ef@outlook.com/ (local) Signed-off-by: George Moussalem <redacted> --- Changes in v3: - Re-added dr_mode back to the controller node in ipq6018-cp01-c1.dts after having removed it in patch 6. - Swap interrupts for dp_hs_phy_irq and dm_hs_phy_irq for ipq9574 as per order in updated binding. - Only set the ref_clk_rate in the probe_data structure if the UTMI clock is available. - Also referring to changes below in v2 (v2 wasn't reviewed yet). - Link to v2: https://lore.kernel.org/r/20260906-ipq-flatten-usb-v2-0-dab83120b10a@outlook.com (local) Changes in v2: - Dropped the "qcom,select-utmi-as-ref-clk" property from the binding and DTS nodes since it is no longer needed. If the UTMI clock is available, the glue layer will pass its clock rate to the core unconditionally. - Added separate patches to move the DR mode to the relevant board DTS files as per Konrad's request. - Picked up RB tags - Link to v1: https://lore.kernel.org/r/20260825-ipq-flatten-usb-v1-0-5c1f3170bbe9@outlook.com (local) --- George Moussalem (10): usb: dwc3: core: Allow glue layer to pass reference clock rate usb: dwc3: qcom: Add support for selecting UTMI as reference clock arm64: dts: qcom: ipq5018: Flatten usb controller node arm64: dts: qcom: ipq5332: Flatten usb controller node arm64: dts: qcom: ipq5424: Flatten usb controller nodes arm64: dts: qcom: ipq6018: move DR mode to board DTS arm64: dts: qcom: ipq6018: Flatten usb controller nodes arm64: dts: qcom: ipq8074: move DR mode to board DTS arm64: dts: qcom: ipq8074: Flatten usb controller nodes arm64: dts: qcom: ipq9574: Flatten usb controller node arch/arm64/boot/dts/qcom/ipq5018-rdp432-c2.dts | 6 +- arch/arm64/boot/dts/qcom/ipq5018.dtsi | 51 +++++------ arch/arm64/boot/dts/qcom/ipq5332-rdp468.dts | 6 +- arch/arm64/boot/dts/qcom/ipq5332.dtsi | 57 ++++++------ arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts | 12 +-- arch/arm64/boot/dts/qcom/ipq5424.dtsi | 86 ++++++++---------- arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts | 2 + arch/arm64/boot/dts/qcom/ipq6018.dtsi | 95 +++++++++----------- arch/arm64/boot/dts/qcom/ipq8074-hk01.dts | 4 + arch/arm64/boot/dts/qcom/ipq8074.dtsi | 110 +++++++++++------------ arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi | 6 +- arch/arm64/boot/dts/qcom/ipq9574.dtsi | 48 +++++----- drivers/usb/dwc3/core.c | 6 ++ drivers/usb/dwc3/core.h | 2 + drivers/usb/dwc3/dwc3-qcom.c | 9 ++ drivers/usb/dwc3/glue.h | 4 + 16 files changed, 236 insertions(+), 268 deletions(-) --- base-commit: 32b6ef9a5d0eca44f9cd91f52f4faa89f145a0de change-id: 20260825-ipq-flatten-usb-c7d7f15f3966 Best regards, -- George Moussalem [off-list ref]