kernel/linux.git/drivers/usb/dwc3/Makefile, branch linux-7.1.y

usb: dwc3: introduce flatten model driver of i.MX Soc

2026-02-25T18:35:58+00:00

The i.MX USB glue and DWC3 core are closely coupled. Describe the i.MX USB block in a single block will bring more benefits than a parent- child relation. To support the flatten model devicetree, DWC3 USB core driver already support to directly register and initialize the core in glue layer using one device. And many notification can be received in glue layer timely and proper actions can be executed accordingly. To align with mainstream, introduce a new driver to support flatten dwc3 devicetree model for i.MX Soc. Besides this driver disables wakeup irq when system is active, no other function change in this version compared to dwc3-imx8mp.c. After this new driver is settled, only maintenance fixes will be added to dwc3-imx8mp.c, new features will only be added to this new driver. Once all users switch to this new one, the legacy driver will be removed at proper time. Signed-off-by: Xu Yang Acked-by: Thinh Nguyen Link: https://patch.msgid.link/20260212-add-flatten-dts-based-dwc3-imx-driver-v5-3-ff04a75ce221@nxp.com Signed-off-by: Greg Kroah-Hartman

usb: dwc3: Add Google Tensor SoC DWC3 glue driver

2025-12-23T14:31:31+00:00

Add support for the DWC3 USB controller found on Google Tensor G5 (codename: laguna). The controller features dual-role functionality and hibernation. The primary focus is implementing hibernation support in host mode, enabling the controller to enter a low-power state (D3). This is particularly relevant during system power state transition and runtime power management for power efficiency. Highlights: - Align suspend callback with dwc3_suspend_common() for deciding between a full teardown and hibernation in host mode. - Integration with `psw` (power switchable) and `top` power domains, managing their states and device links to support hibernation. - A notifier callback dwc3_google_usb_psw_pd_notifier() for `psw` power domain events to manage controller state transitions to/from D3. - Coordination of the `non_sticky` reset during power state transitions, asserting it on D3 entry and deasserting on D0 entry in hibernation scenario. - Handling of high-speed and super-speed PME interrupts that are generated by remote wakeup during hibernation. Co-developed-by: Joy Chakraborty Signed-off-by: Joy Chakraborty Co-developed-by: Naveen Kumar Signed-off-by: Naveen Kumar Reviewed-by: Peter Griffin Signed-off-by: Roy Luo Acked-by: Thinh Nguyen Link: https://patch.msgid.link/20251218-controller-v10-2-4047c9077274@google.com Signed-off-by: Greg Kroah-Hartman

usb: dwc3: Add Apple Silicon DWC3 glue layer driver

2025-10-22T08:58:31+00:00

The dwc3 controller present on Apple Silicon SoCs like the M1 requires a specific order of operations synchronized between its PHY and its Type-C controller. Specifically, the PHY first has to go through initial bringup (which requires knowledge of the lane mode and orientation) before dwc3 itself can be brought up and can then finalize the PHY configuration. Additionally, dwc3 has to be teared down and re-initialized whenever the cable is changed due to hardware quirks that prevent a new device from being recognized and due to the PHY being unable to switch lane mode or orientation while dwc3 is up and running. These controllers also have a Apple-specific MMIO region after the common dwc3 region where some controls have to be updated. PHY bringup and shutdown also requires SUSPHY to be enabled for the ports to work correctly. In the future, this driver will also gain support for USB3-via-USB4 tunneling which will require additional tweaks. Add a glue driver that takes of all of these constraints. Reviewed-by: Neal Gompa Acked-by: Thinh Nguyen Signed-off-by: Sven Peter Link: https://patch.msgid.link/20251015-b4-aplpe-dwc3-v2-5-cbd65a2d511a@kernel.org Signed-off-by: Greg Kroah-Hartman

usb: dwc3: add generic driver to support flattened

2025-09-17T10:38:34+00:00

To support flattened dwc3 dt model and drop the glue layer, introduce the `dwc3-generic` driver. This enables direct binding of the DWC3 core driver and offers an alternative to the existing glue driver `dwc3-of-simple`. Acked-by: Thinh Nguyen Signed-off-by: Ze Huang Link: https://lore.kernel.org/r/20250913-dwc3_generic-v8-2-b50f81f05f95@linux.dev Signed-off-by: Greg Kroah-Hartman Link: https://lore.kernel.org/r/20250913-dwc3_generic-v8-2-b50f81f05f95@linux.dev

usb: dwc3: qcom: Snapshot driver for backwards compatibilty

2025-04-15T12:29:19+00:00

In order to more tightly integrate the Qualcomm glue driver with the dwc3 core the driver is redesigned to avoid splitting the implementation using the driver model. But due to the strong coupling to the Devicetree binding needs to be updated as well. Various ways to provide backwards compatibility with existing Devicetree blobs has been explored, but migrating the Devicetree information between the old and the new binding is non-trivial. For the vast majority of boards out there, the kernel and Devicetree are generated and handled together, which in practice means that backwards compatibility needs to be managed across about 1 kernel release. For some though, such as the various Snapdragon laptops, the Devicetree blobs live a life separate of the kernel. In each one of these, with the continued extension of new features, it's recommended that users would upgrade their Devicetree somewhat frequently. With this in mind, simply carrying a snapshot/copy of the current driver is simpler than creating and maintaining the migration code. The driver is kept under the same Kconfig option, to ensure that Linux distributions doesn't drop USB support on these platforms. The driver, which is going to be refactored to handle the newly introduced qcom,snps-dwc3 compatible, is updated to temporarily not match against any compatible. This driver should be removed after the next LTS release. Acked-by: Thinh Nguyen Tested-by: Neil Armstrong # on SM8650-QRD Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20250414-dwc3-refactor-v7-1-f015b358722d@oss.qualcomm.com Signed-off-by: Greg Kroah-Hartman

usb: dwc3: add Realtek DHC RTD SoC dwc3 glue layer driver

2023-10-02T12:05:24+00:00

Realtek DHC RTD SoCs integrate dwc3 IP and has some customizations to support different generations of SoCs. The RTD1619b subclass SoC only supports USB 2.0 from dwc3. The driver can set a maximum speed to support this. Add role switching function, that can switch USB roles through other drivers, or switch USB roles through user space through set /sys/class/usb_role/. Signed-off-by: Stanley Chang Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20230826031028.1892-1-stanley_chang@realtek.com Signed-off-by: Greg Kroah-Hartman

usb: dwc3: dwc3-octeon: Convert to glue driver

2023-08-04T12:52:15+00:00

DWC3 as implemented in Cavium SoC is using UCTL bridge unit between I/O interconnect and USB controller. Currently there is no bond with dwc3 core code, so if anything goes wrong in UCTL setup dwc3 is left in reset, which leads to bus error while trying to read any device register. Thus any failure in UCTL initialization ends with kernel panic. To avoid this move Octeon DWC3 glue code from arch/mips and make it proper glue driver which is used instead of dwc3-of-simple. Signed-off-by: Ladislav Michl Acked-by: Thomas Bogendoerfer Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/ZMd/ReyiY7wS6DvN@lenoch Signed-off-by: Greg Kroah-Hartman

drivers: usb: dwc3: Add AM62 USB wrapper driver

2022-04-21T16:31:56+00:00

In AM62 SoC, the Designware Core USB3 IP is progammed to operate in USB2.0 only mode. Add driver for AM62 USB DWC3 Wrapper. Signed-off-by: Aswath Govindraju Link: https://lore.kernel.org/r/20220414103211.16202-3-a-govindraju@ti.com Signed-off-by: Greg Kroah-Hartman

usb: dwc3: Add driver for Xilinx platforms

2021-03-23T11:48:14+00:00

Add a new driver for supporting Xilinx platforms. This driver is used for some sequence of operations required for Xilinx USB controllers. This driver is also used to choose between PIPE clock coming from SerDes and the Suspend Clock. Before the controller is out of reset, the clock selection should be changed to PIPE clock in order to make the USB controller work. There is a register added in Xilinx USB controller register space for the same. Signed-off-by: Manish Narani Link: https://lore.kernel.org/r/1615963949-75320-3-git-send-email-manish.narani@xilinx.com Signed-off-by: Greg Kroah-Hartman

usb: dwc3: add imx8mp dwc3 glue layer driver

2021-01-04T15:38:08+00:00

imx8mp SoC integrate dwc3 3.30b IP and has some customizations to support low power, which has a seprated wakeup irq and additional logic to wakeup usb from low power mode both for host mode and device mode. Signed-off-by: Li Jun Link: https://lore.kernel.org/r/1609241866-9508-3-git-send-email-jun.li@nxp.com Signed-off-by: Greg Kroah-Hartman