linux-toradex.git/drivers/usb/dwc3/Kconfig, branch master Linux kernel for Apalis and Colibri modules usb: dwc3: introduce flatten model driver of i.MX Soc 2026-02-25T18:35:58+00:00 Xu Yang xu.yang_2@nxp.com 2026-02-12T09:40:28+00:00 76fc9452a6bfb63a297fa0410d5368a691ed411b 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 <xu.yang_2@nxp.com> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://patch.msgid.link/20260212-add-flatten-dts-based-dwc3-imx-driver-v5-3-ff04a75ce221@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
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 <xu.yang_2@nxp.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260212-add-flatten-dts-based-dwc3-imx-driver-v5-3-ff04a75ce221@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: dwc3: Add Google Tensor SoC DWC3 glue driver 2025-12-23T14:31:31+00:00 Roy Luo royluo@google.com 2025-12-18T19:23:11+00:00 8995a37371bf489ede768271aac56e4e6a55bcb2 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 <joychakr@google.com> Signed-off-by: Joy Chakraborty <joychakr@google.com> Co-developed-by: Naveen Kumar <mnkumar@google.com> Signed-off-by: Naveen Kumar <mnkumar@google.com> Reviewed-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Roy Luo <royluo@google.com> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://patch.msgid.link/20251218-controller-v10-2-4047c9077274@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
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 <joychakr@google.com>
Signed-off-by: Joy Chakraborty <joychakr@google.com>
Co-developed-by: Naveen Kumar <mnkumar@google.com>
Signed-off-by: Naveen Kumar <mnkumar@google.com>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Roy Luo <royluo@google.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20251218-controller-v10-2-4047c9077274@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: dwc3: Add Apple Silicon DWC3 glue layer driver 2025-10-22T08:58:31+00:00 Sven Peter sven@kernel.org 2025-10-15T15:40:45+00:00 0ec946d32ef7b1f58070cbef06bd7bdc8193c94a 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 <neal@gompa.dev> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Signed-off-by: Sven Peter <sven@kernel.org> Link: https://patch.msgid.link/20251015-b4-aplpe-dwc3-v2-5-cbd65a2d511a@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
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 <neal@gompa.dev>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Sven Peter <sven@kernel.org>
Link: https://patch.msgid.link/20251015-b4-aplpe-dwc3-v2-5-cbd65a2d511a@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: dwc3: add generic driver to support flattened 2025-09-17T10:38:34+00:00 Ze Huang huang.ze@linux.dev 2025-09-12T16:53:48+00:00 e0b6dc00c701e600e655417aab1e100b73de821a 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 <Thinh.Nguyen@synopsys.com> Signed-off-by: Ze Huang <huang.ze@linux.dev> Link: https://lore.kernel.org/r/20250913-dwc3_generic-v8-2-b50f81f05f95@linux.dev Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250913-dwc3_generic-v8-2-b50f81f05f95@linux.dev 
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 <Thinh.Nguyen@synopsys.com>
Signed-off-by: Ze Huang <huang.ze@linux.dev>
Link: https://lore.kernel.org/r/20250913-dwc3_generic-v8-2-b50f81f05f95@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250913-dwc3_generic-v8-2-b50f81f05f95@linux.dev
usb: use "prompt" instead of "bool" for choice prompts 2024-11-04T08:53:09+00:00 Masahiro Yamada masahiroy@kernel.org 2024-09-29T17:32:36+00:00 b95d0899c8bfa1346dd195e868c48008d888bac9 Since commit fde192511bdb ("kconfig: remove tristate choice support"), all choice blocks are now boolean. There is no longer a need to specify the choice type explicitly. Most choice blocks already use "prompt". Before the next commit removes support for the "bool" syntax in choice entries, this commit converts the remaining "bool" occurences under drivers/usb/. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 
Since commit fde192511bdb ("kconfig: remove tristate choice support"),
all choice blocks are now boolean. There is no longer a need to specify
the choice type explicitly.

Most choice blocks already use "prompt". Before the next commit removes
support for the "bool" syntax in choice entries, this commit converts
the remaining "bool" occurences under drivers/usb/.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
usb: dwc3: qcom: Remove ACPI support from glue driver 2024-03-05T13:06:14+00:00 Krishna Kurapati quic_kriskura@quicinc.com 2024-03-05T09:32:16+00:00 41717b88abf1cacd953e9ea2ace2f62eaf763c48 Minimal ACPI support was added to the Qualcomm DWC3 glue driver in order to enable USB on SDM850 and SC8180X compute platforms. The support is still functional, but unnoticed regressions in other drivers indicates that no one actually booting any of platforms dependent on this implementation. The functionality provides is the bare minimum and is not expected to aid in the effort of bringing full ACPI support to the driver in the future. Remove the ACPI code from the Qualcomm DWC3 glue driver to aid in the implementation of improvements that are actually used like multiport and flattening device tree. Commit message by Bjorn Andersson. Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com> Reviewed-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20240305093216.3814787-1-quic_kriskura@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Minimal ACPI support was added to the Qualcomm DWC3 glue driver in order to
enable USB on SDM850 and SC8180X compute platforms. The support is still
functional, but unnoticed regressions in other drivers indicates that no
one actually booting any of platforms dependent on this implementation.

The functionality provides is the bare minimum and is not expected to aid
in the effort of bringing full ACPI support to the driver in the future.

Remove the ACPI code from the Qualcomm DWC3 glue driver to aid in the
implementation of improvements that are actually used like multiport and
flattening device tree.

Commit message by Bjorn Andersson.

Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240305093216.3814787-1-quic_kriskura@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: dwc3: add Realtek DHC RTD SoC dwc3 glue layer driver 2023-10-02T12:05:24+00:00 Stanley Chang stanley_chang@realtek.com 2023-08-26T03:10:06+00:00 34c200483569fc209e31017e2f6fdbfcb79cd3d5 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 <stanley_chang@realtek.com> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/20230826031028.1892-1-stanley_chang@realtek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
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 <stanley_chang@realtek.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20230826031028.1892-1-stanley_chang@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: dwc3: dwc3-octeon: Convert to glue driver 2023-08-04T12:52:15+00:00 Ladislav Michl ladis@linux-mips.org 2023-07-31T09:30:45+00:00 976f82e8aa3cfe557ee22a313bf48f418695bedf 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 <ladis@linux-mips.org> Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/ZMd/ReyiY7wS6DvN@lenoch Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
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 <ladis@linux-mips.org>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/ZMd/ReyiY7wS6DvN@lenoch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: dwc3: fix extcon dependency 2023-01-19T13:19:49+00:00 Arnd Bergmann arnd@arndb.de 2023-01-18T09:01:41+00:00 7d80dbd708c18c683dd34f79b600a05307707ce8 The dwc3 core support now links against the extcon subsystem, so it cannot be built-in when extcon is a loadable module: arm-linux-gnueabi-ld: drivers/usb/dwc3/core.o: in function `dwc3_get_extcon': core.c:(.text+0x572): undefined reference to `extcon_get_edev_by_phandle' arm-linux-gnueabi-ld: core.c:(.text+0x596): undefined reference to `extcon_get_extcon_dev' arm-linux-gnueabi-ld: core.c:(.text+0x5ea): undefined reference to `extcon_find_edev_by_node' There was already a Kconfig dependency in the dual-role support, but this is now needed for the entire dwc3 driver. It is still possible to build dwc3 without extcon, but this prevents it from being set to built-in when extcon is a loadable module. Fixes: d182c2e1bc92 ("usb: dwc3: Don't switch OTG -> peripheral if extcon is present") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/20230118090147.2126563-1-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The dwc3 core support now links against the extcon subsystem,
so it cannot be built-in when extcon is a loadable module:

arm-linux-gnueabi-ld: drivers/usb/dwc3/core.o: in function `dwc3_get_extcon':
core.c:(.text+0x572): undefined reference to `extcon_get_edev_by_phandle'
arm-linux-gnueabi-ld: core.c:(.text+0x596): undefined reference to `extcon_get_extcon_dev'
arm-linux-gnueabi-ld: core.c:(.text+0x5ea): undefined reference to `extcon_find_edev_by_node'

There was already a Kconfig dependency in the dual-role support,
but this is now needed for the entire dwc3 driver.

It is still possible to build dwc3 without extcon, but this
prevents it from being set to built-in when extcon is a loadable
module.

Fixes: d182c2e1bc92 ("usb: dwc3: Don't switch OTG -> peripheral if extcon is present")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20230118090147.2126563-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: dwc3: improve the config dependency of USB_DWC3_XILINX 2022-11-22T16:30:21+00:00 Lukas Bulwahn lukas.bulwahn@gmail.com 2022-11-16T11:04:44+00:00 3205054dc6fe2425ff24827a51fdf7cbbb528680 A request to Manish Narani (see Link) asked for clarification of the reference to the config ARCH_VERSAL in the support of Xilinx SoCs with DesignWare Core USB3 IP. As there is no response, clean up the reference to the non-existing config symbol. While at it, follow up on Felipe Balbi's request to add the alternative COMPILE_TEST dependency. Link: https://lore.kernel.org/all/CAKXUXMwgWfX8+OvY0aCwRNukencwJERAZzU7p4eOLXQ2zv6rAg@mail.gmail.com/ Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/20221116110444.8340-1-lukas.bulwahn@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
A request to Manish Narani (see Link) asked for clarification of the
reference to the config ARCH_VERSAL in the support of Xilinx SoCs with
DesignWare Core USB3 IP.

As there is no response, clean up the reference to the non-existing config
symbol. While at it, follow up on Felipe Balbi's request to add the
alternative COMPILE_TEST dependency.

Link: https://lore.kernel.org/all/CAKXUXMwgWfX8+OvY0aCwRNukencwJERAZzU7p4eOLXQ2zv6rAg@mail.gmail.com/

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20221116110444.8340-1-lukas.bulwahn@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>