linux-stable.git/drivers/usb/dwc2, branch linux-6.17.y

usb: dwc2: fix hang during suspend if set as peripheral

2025-12-18T12:59:51+00:00

[ Upstream commit 2b94b054ac4974ad2f89f7f7461840c851933adb ]

dwc2 on most platforms needs phy controller, clock and power supply.
All of them must be enabled/activated to properly operate. If dwc2
is configured as peripheral mode, then all the above three hardware
resources are disabled at the end of the probe:

	/* Gadget code manages lowlevel hw on its own */
	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
		dwc2_lowlevel_hw_disable(hsotg);

But the dwc2_suspend() tries to read the dwc2's reg to check whether
is_device_mode or not, this would result in hang during suspend if dwc2
is configured as peripheral mode.

Fix this hang by bypassing suspend/resume if lowlevel hw isn't
enabled.

Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Jisheng Zhang 
Link: https://patch.msgid.link/20251104002503.17158-3-jszhang@kernel.org
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

usb: dwc2: fix hang during shutdown if set as peripheral

2025-12-18T12:59:50+00:00

[ Upstream commit b6ebcfdcac40a27953f052e4269ce75a18825ffc ]

dwc2 on most platforms needs phy controller, clock and power supply.
All of them must be enabled/activated to properly operate. If dwc2
is configured as peripheral mode, then all the above three hardware
resources are disabled at the end of the probe:

	/* Gadget code manages lowlevel hw on its own */
	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
		dwc2_lowlevel_hw_disable(hsotg);

But dwc2_driver_shutdown() tries to disable the interrupts on HW IP
level. This would result in hang during shutdown if dwc2 is configured
as peripheral mode.

Fix this hang by only disable and sync irq when lowlevel hw is enabled.

Fixes: 4fdf228cdf69 ("usb: dwc2: Fix shutdown callback in platform")
Signed-off-by: Jisheng Zhang 
Link: https://patch.msgid.link/20251104002503.17158-2-jszhang@kernel.org
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

Merge tag 'v6.16-rc7' into usb-next

2025-07-21T08:55:57+00:00

We need the USB/Thunderbolt fixes in here for other patches to be on top
of.

Signed-off-by: Greg Kroah-Hartman

usb: dwc2: gadget: Fix enter to hibernation for UTMI+ PHY

2025-07-13T15:31:04+00:00

For UTMI+ PHY, according to programming guide, first should be set
PMUACTV bit then STOPPCLK bit. Otherwise, when the device issues
Remote Wakeup, then host notices disconnect instead.
For ULPI PHY, above mentioned bits must be set in reversed order:
STOPPCLK then PMUACTV.

Fixes: 4483ef3c1685 ("usb: dwc2: Add hibernation updates for ULPI PHY")
Cc: stable 
Signed-off-by: Minas Harutyunyan 
Link: https://lore.kernel.org/r/692110d3c3d9bb2a91cedf24528a7710adc55452.1751881374.git.Minas.Harutyunyan@synopsys.com
Signed-off-by: Greg Kroah-Hartman

usb: dwc2: disable platform lowlevel hw resources during shutdown

2025-06-30T13:42:36+00:00

On some SoC platforms, in shutdown stage, most components' power is cut
off, but there's still power supply to the so called always-on
domain, so if the dwc2's regulator is from the always-on domain, we
need to explicitly disable it to save power.

Disable platform lowlevel hw resources such as phy, clock and
regulators etc. in device shutdown hook to reduce non-necessary power
consumption when the platform enters shutdown stage.

Signed-off-by: Jisheng Zhang 
Acked-by: Minas Harutyunyan 
Link: https://lore.kernel.org/r/20250629094655.747-1-jszhang@kernel.org
Signed-off-by: Greg Kroah-Hartman

usb: dwc2: follow compatible string change for Sophgo CV18XX/SG200X series SoC

2025-06-24T14:40:40+00:00

As the wildcard name is dropped and favor new compatible string
which match a real SoC, and it is not used for any board at now.

Rename it to sophgo,cv1800b-usb to match the binding change.

Signed-off-by: Inochi Amaoto 
Acked-by: Minas Harutyunyan 
Link: https://lore.kernel.org/r/20250618031132.373216-3-inochiama@gmail.com
Signed-off-by: Greg Kroah-Hartman

treewide, timers: Rename from_timer() to timer_container_of()

2025-06-08T07:07:37+00:00

Move this API to the canonical timer_*() namespace.

[ tglx: Redone against pre rc1 ]

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/all/aB2X0jCKQO56WdMt@gmail.com

usb: dwc2: gadget: Use USB API functions rather than constants

2025-05-21T11:13:20+00:00

Use the function usb_endpoint_type() rather than constants.
The Coccinelle semantic patch is as follows:

@@ struct usb_endpoint_descriptor *epd; @@

- (epd->bmAttributes & \(USB_ENDPOINT_XFERTYPE_MASK\|3\))
+ usb_endpoint_type(epd)

Signed-off-by: Chen Ni 
Link: https://lore.kernel.org/r/20250519062229.724664-1-nichen@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman

usb: dwc2: also exit clock_gating when stopping udc while suspended

2025-04-25T11:21:09+00:00

It is possible that the gadget will be disabled, while the udc is
suspended. When enabling the udc in that case, the clock gating
will not be enabled again. Leaving the phy unclocked. Even when the
udc is not enabled, connecting this powered but not clocked phy leads
to enumeration errors on the host side.

To ensure that the clock gating will be in an valid state, we ensure
that the clock gating will be enabled before stopping the udc.

Signed-off-by: Michael Grzeschik 
Acked-by: Minas Harutyunyan 
Link: https://lore.kernel.org/r/20250417-dwc2_clock_gating-v1-1-8ea7c4d53d73@pengutronix.de
Signed-off-by: Greg Kroah-Hartman

treewide: Switch/rename to timer_delete[_sync]()

2025-04-05T08:30:12+00:00

timer_delete[_sync]() replaces del_timer[_sync](). Convert the whole tree
over and remove the historical wrapper inlines.

Conversion was done with coccinelle plus manual fixups where necessary.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar